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class="list_item">焦亞硫酸鈉</a> <div class="layer3" > <ul> </ul> </div> </li> <li> <a href="http://www.buildinstantrapport.com/product/spjclsnry29e/" class="list_item">食品級次氯酸鈉溶液</a> <div class="layer3" > <ul> </ul> </div> </li> </ul> </div> </li> <li class="layer1"> <a href="http://www.buildinstantrapport.com/product/scltl/" class="list_item">水處理填料</a> <div class="layer2" style="display:none;"> <ul> <li> <a href="http://www.buildinstantrapport.com/product/xsxwll649/" class="list_item">彗星式纖維濾料</a> <div class="layer3" > <ul> </ul> </div> </li> <li> <a href="http://www.buildinstantrapport.com/product/sys/" class="list_item">石英砂</a> <div class="layer3" > <ul> </ul> </div> </li> <li> <a href="http://www.buildinstantrapport.com/product/hxt/" class="list_item">活性炭</a> <div class="layer3" > <ul> </ul> </div> </li> </ul> </div> </li> <li class="layer1"> <a href="http://www.buildinstantrapport.com/product/ccj/" class="list_item">除臭劑</a> <div class="layer2" style="display:none;"> <ul> <li> <a 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</li> <li> <a href="http://www.buildinstantrapport.com/product/jqry/" class="list_item">甲醛溶液</a> <div class="layer3" > <ul> </ul> </div> </li> </ul> </div> </li> </ul> <script type="text/javascript"> $(".layer1").hover ( function() { if($(this).find(".layer2 li").length > 0) { $(this).find(".layer2").stop().show(); } $(this).addClass("change"); }, function() { $(this).find(".layer2").stop().hide(); $(this).removeClass("change"); } ); </script> </div> <div class="box n_contact"> <h3>聯系我們</h3> <div class="content"><p style="LINE-HEIGHT: 3em"><strong><span style="FONT-SIZE: 16px; FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'">岳陽億德環?？萍加邢薰?/span></strong></p><p style="LINE-HEIGHT: 2em"><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'">聯系人：李志華</span></p><p style="LINE-HEIGHT: 2em"><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'">手　機：13873068116</span></p><p style="LINE-HEIGHT: 2em"><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'">熱　線：400-040-3618</span></p><p style="LINE-HEIGHT: 2em"><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'"><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'">電　話</span>：0730-3160024</span></p><p style="LINE-HEIGHT: 2em"><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'">網　址：</span><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'">www.buildinstantrapport.com</span><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'"> </span></p><p style="LINE-HEIGHT: 2em"><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'">地　址：湖南省岳陽市岳陽大道金石花園三棟2806室</span></p><p style="LINE-HEIGHT: 2em"><span style="FONT-FAMILY: 微軟雅黑, 'Microsoft YaHei'">郵　編：414000</span></p><p><br/></p><p><br/></p></div> </div> </div> <div class="right"> <div class="sitemp clearfix"> <h2> 凈水絮凝劑硫酸鋁行業標準-岳陽億德 </h2> <div class="site">您的當前位置： <a href="http://www.buildinstantrapport.com/">首頁</a> >> <a href="http://www.buildinstantrapport.com/news/">環保資訊</a> >> <a href="http://www.buildinstantrapport.com/news/jszx30f/">專業知識</a> </div> </div> <div class="content">  <div class="news_detail"> <h1 class="title">凈水絮凝劑硫酸鋁行業標準-岳陽億德</h1> <div class="info_title clearfix"> <h3 class="title_bar"> 發布日期：<span>2016-01-16 00:00</span> 來源：<span>http://www.buildinstantrapport.com</span> 點擊：<span><script src="http://www.buildinstantrapport.com/data/include/newshits.php?id=353"></script></span> </h3> <div class="share">  <div id="bdshare" class="bdshare_t bds_tools get-codes-bdshare"> <a class="bds_tsina"></a> <a class="bds_qzone"></a> <a class="bds_tqq"></a> <a class="bds_hi"></a> <a class="bds_qq"></a> <a class="bds_tieba"></a> <span class="bds_more">更多</span> <a class="shareCount"></a> </div> <script type="text/javascript" id="bdshare_js" data="type=tools&uid=6513684" ></script> <script type="text/javascript" id="bdshell_js"></script> <script type="text/javascript"> document.getElementById("bdshell_js").src = "http://bdimg.share.baidu.com/static/js/shell_v2.js?cdnversion=" + Math.ceil(new Date()/3600000) </script>  </div> </div> <div class="content"><p style="text-align: center; line-height: 3em;"><span style="font-family: 宋體; font-size: 14px;"><a href='http://www.buildinstantrapport.com/' target='_blank' class='key_tag'><font color=#136ec2><strong>凈水絮凝劑</strong></font></a><a href='http://www.buildinstantrapport.com/product/lslc/' target='_blank' class='key_tag'><font color=#136ec2><strong>硫酸鋁</strong></font></a>行業標準</span></p><p style="line-height: 3em;"><span style="font-family: 宋體; font-size: 14px;"> 本標準適用于工業硫酸和鋁礬土<span style="font-size: 14px; font-family: Calibri;">(</span>或氫氧化鋁<span style="font-size: 14px; font-family: Calibri;">)</span>為原料制得的硫酸鋁，用作飲用水凈水劑。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　分子式：<span style="font-size: 14px; font-family: Calibri;">AI2(SO4)3</span><span style="font-size: 14px; font-family: 宋體;">·</span><span style="font-size: 14px; font-family: Calibri;">xH2O</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　分子量：<span style="font-size: 14px; font-family: Calibri;">342.14(</span><span style="font-size: 14px; font-family: 宋體;">按</span><span style="font-size: 14px; font-family: Calibri;">1979</span><span style="font-size: 14px; font-family: 宋體;">年國際原子量。以無水硫酸鋁計</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><h1 label="標題居左" style="font-size: 32px; font-weight: bold; border-bottom-color: rgb(204, 204, 204); border-bottom-width: 2px; border-bottom-style: solid; padding: 0px 4px 0px 0px; text-align: left; margin: 0px 0px 10px;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">1</span><span style="font-size: 14px; font-family: 宋體;">　技術要求</span></span></h1><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">1.1</span><span style="font-size: 14px; font-family: 宋體;">　外觀</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　本品為塊狀或片狀，塊徑不大于<span style="font-size: 14px; font-family: Calibri;">15mm</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">1.2</span><span style="font-size: 14px; font-family: 宋體;">　項目和指標</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　項目指　標</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　氧化鋁<span style="font-size: 14px; font-family: Calibri;">(AI2O3)</span><span style="font-size: 14px; font-family: 宋體;">，</span><span style="font-size: 14px; font-family: Calibri;">%</span><span style="font-size: 14px; font-family: 宋體;">　　　　　　≥ </span><span style="font-size: 14px; font-family: Calibri;">15.6</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　其它金屬氧化物<span style="font-size: 14px; font-family: Calibri;">(</span><span style="font-size: 14px; font-family: 宋體;">以</span><span style="font-size: 14px; font-family: Calibri;">Fe2O3</span><span style="font-size: 14px; font-family: 宋體;">計</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">，</span><span style="font-size: 14px; font-family: Calibri;">%</span><span style="font-size: 14px; font-family: 宋體;">≤ </span><span style="font-size: 14px; font-family: Calibri;">1.0</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　游離酸符合檢驗</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　水不溶物，<span style="font-size: 14px; font-family: Calibri;">%</span><span style="font-size: 14px; font-family: 宋體;">　　　　　　　　≤ </span><span style="font-size: 14px; font-family: Calibri;">0.15</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　砷<span style="font-size: 14px; font-family: Calibri;">(As)</span><span style="font-size: 14px; font-family: 宋體;">，</span><span style="font-size: 14px; font-family: Calibri;">%</span><span style="font-size: 14px; font-family: 宋體;">　　　　　　　　　≤ </span><span style="font-size: 14px; font-family: Calibri;">0.0005</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　重金屬<span style="font-size: 14px; font-family: Calibri;">(</span><span style="font-size: 14px; font-family: 宋體;">以</span><span style="font-size: 14px; font-family: Calibri;">Pb</span><span style="font-size: 14px; font-family: 宋體;">計</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">，</span><span style="font-size: 14px; font-family: Calibri;">%</span><span style="font-size: 14px; font-family: 宋體;">　　　　　≤ </span><span style="font-size: 14px; font-family: Calibri;">0.002</span></span></p><h1 label="標題居左" style="font-size: 32px; font-weight: bold; border-bottom-color: rgb(204, 204, 204); border-bottom-width: 2px; border-bottom-style: solid; padding: 0px 4px 0px 0px; text-align: left; margin: 0px 0px 10px;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.</span><span style="font-size: 14px; font-family: 宋體;">試驗方法</span></span></h1><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　除特別注明外，試驗中所用試劑為分析純試劑，水為蒸餾水或相應純度的水，溶液為水溶液。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1</span><span style="font-size: 14px; font-family: 宋體;">　氧化鋁和其它金屬氧化物含量的測定</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.1</span><span style="font-size: 14px; font-family: 宋體;">　原理</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　加入過量的乙二胺四乙酸二鈉溶液并煮沸，使與鋁及其它金屬離子絡合，以二甲酚橙為指示劑，用硝酸鉛溶液滴定過量的乙二胺四乙酸二鈉，然后加入氟化鉀溶液并煮沸，解析出與鋁絡合的乙二胺四乙酸二鈉，再用硝酸鉛溶液滴定。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.2</span><span style="font-size: 14px; font-family: 宋體;">　儀器設備</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　一般實驗室儀器和設備。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3</span><span style="font-size: 14px; font-family: 宋體;">　試劑和溶液</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.1</span><span style="font-size: 14px; font-family: 宋體;">　乙二胺四乙酸二鈉</span><span style="font-size: 14px; font-family: Calibri;">(GB 1401-78)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">0.04M</span><span style="font-size: 14px; font-family: 宋體;">標準溶液。稱取</span><span style="font-size: 14px; font-family: Calibri;">14.9g</span><span style="font-size: 14px; font-family: 宋體;">該試劑，以適量水溶解，移入</span><span style="font-size: 14px; font-family: Calibri;">1000mL</span><span style="font-size: 14px; font-family: 宋體;">容量瓶內，稀釋至刻度，混勻。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.2</span><span style="font-size: 14px; font-family: 宋體;">　氨水</span><span style="font-size: 14px; font-family: Calibri;">(GB 631-77)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">1:1</span><span style="font-size: 14px; font-family: 宋體;">溶液。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.3</span><span style="font-size: 14px; font-family: 宋體;">　鹽酸</span><span style="font-size: 14px; font-family: Calibri;">(GB 622-77)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">1:1</span><span style="font-size: 14px; font-family: 宋體;">溶液。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.4</span><span style="font-size: 14px; font-family: 宋體;">　乙酸</span><span style="font-size: 14px; font-family: Calibri;">-</span><span style="font-size: 14px; font-family: 宋體;">乙酸鈉緩沖溶液</span><span style="font-size: 14px; font-family: Calibri;">(GB 676-78;GB 693-77)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">PH</span><span style="font-size: 14px; font-family: 宋體;">值</span><span style="font-size: 14px; font-family: Calibri;">5</span><span style="font-size: 14px; font-family: 宋體;">～</span><span style="font-size: 14px; font-family: Calibri;">6</span><span style="font-size: 14px; font-family: 宋體;">，稱取</span><span style="font-size: 14px; font-family: Calibri;">200g</span><span style="font-size: 14px; font-family: 宋體;">乙酸鈉，溶于水中，加</span><span style="font-size: 14px; font-family: Calibri;">30mL</span><span style="font-size: 14px; font-family: 宋體;">冰乙酸，稀釋至</span><span style="font-size: 14px; font-family: Calibri;">1000mL</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.5</span><span style="font-size: 14px; font-family: 宋體;">　二甲酚橙：指示劑，</span><span style="font-size: 14px; font-family: Calibri;">0.5%</span><span style="font-size: 14px; font-family: 宋體;">溶液。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.6</span><span style="font-size: 14px; font-family: 宋體;">　鉻黑</span><span style="font-size: 14px; font-family: Calibri;">T(HGB 3086-59)</span><span style="font-size: 14px; font-family: 宋體;">：指示劑，按</span><span style="font-size: 14px; font-family: Calibri;">GB 603-77</span><span style="font-size: 14px; font-family: 宋體;">《制劑及制品制備方法》配制。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.7</span><span style="font-size: 14px; font-family: 宋體;">　氨</span><span style="font-size: 14px; font-family: Calibri;">-</span><span style="font-size: 14px; font-family: 宋體;">氯化銨緩沖溶液甲</span><span style="font-size: 14px; font-family: Calibri;">(GB 631-77</span><span style="font-size: 14px; font-family: 宋體;">、</span><span style="font-size: 14px; font-family: Calibri;">GB 658-77)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">pH</span><span style="font-size: 14px; font-family: 宋體;">值約為</span><span style="font-size: 14px; font-family: Calibri;">10</span><span style="font-size: 14px; font-family: 宋體;">，按</span><span style="font-size: 14px; font-family: Calibri;">GB 603-77</span><span style="font-size: 14px; font-family: 宋體;">配制。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.8</span><span style="font-size: 14px; font-family: 宋體;">　硝酸鉛</span><span style="font-size: 14px; font-family: Calibri;">(HG 3-1070-77)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">0.04M</span><span style="font-size: 14px; font-family: 宋體;">標準溶液。稱取</span><span style="font-size: 14px; font-family: Calibri;">13.25g</span><span style="font-size: 14px; font-family: 宋體;">硝酸鉛，溶于水中，加</span><span style="font-size: 14px; font-family: Calibri;">3mL</span><span style="font-size: 14px; font-family: 宋體;">冰乙酸，稀釋至</span><span style="font-size: 14px; font-family: Calibri;">1000mL</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.8.1</span><span style="font-size: 14px; font-family: 宋體;">　乙二胺四乙酸二鈉標準溶液對硝酸鉛標準溶液的比值</span><span style="font-size: 14px; font-family: Calibri;">(</span><span style="font-size: 14px; font-family: 宋體;">體積比</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">的測定：</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　移取<span style="font-size: 14px; font-family: Calibri;">25mL</span><span style="font-size: 14px; font-family: 宋體;">乙二胺四乙酸二鈉標準溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.1]</span><span style="font-size: 14px; font-family: 宋體;">。置于</span><span style="font-size: 14px; font-family: Calibri;">500mL</span><span style="font-size: 14px; font-family: 宋體;">錐形瓶中，加</span><span style="font-size: 14px; font-family: Calibri;">15mL</span><span style="font-size: 14px; font-family: 宋體;">乙配</span><span style="font-size: 14px; font-family: Calibri;">-</span><span style="font-size: 14px; font-family: 宋體;">乙酸鈉緩沖溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.4]</span><span style="font-size: 14px; font-family: 宋體;">。加</span><span style="font-size: 14px; font-family: Calibri;">60mL</span><span style="font-size: 14px; font-family: 宋體;">水，加</span><span style="font-size: 14px; font-family: Calibri;">3</span><span style="font-size: 14px; font-family: 宋體;">～</span><span style="font-size: 14px; font-family: Calibri;">4</span><span style="font-size: 14px; font-family: 宋體;">滴二甲酚橙指示劑</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.5]</span><span style="font-size: 14px; font-family: 宋體;">。用硝酸鉛標準溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.8]</span><span style="font-size: 14px; font-family: 宋體;">滴定至橙色即為終點。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.8.2</span><span style="font-size: 14px; font-family: 宋體;">　計算</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　比值<span style="font-size: 14px; font-family: Calibri;">K</span><span style="font-size: 14px; font-family: 宋體;">按下式計算：</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">K = 25/V</span>　　　　　　　　　　　　　<span style="font-size: 14px; font-family: Calibri;">(1)</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　式中：<span style="font-size: 14px; font-family: Calibri;">V</span><span style="font-size: 14px; font-family: 宋體;">——滴定時所消耗硝酸鉛標準溶液的體積，</span><span style="font-size: 14px; font-family: Calibri;">mL</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.9</span><span style="font-size: 14px; font-family: 宋體;">　氧化鋅</span><span style="font-size: 14px; font-family: Calibri;">(GB 1260-77)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">0.04M</span><span style="font-size: 14px; font-family: 宋體;">標準溶液。稱取</span><span style="font-size: 14px; font-family: Calibri;">3.2552g(</span><span style="font-size: 14px; font-family: 宋體;">稱準至</span><span style="font-size: 14px; font-family: Calibri;">0.0002g)</span><span style="font-size: 14px; font-family: 宋體;">經</span><span style="font-size: 14px; font-family: Calibri;">800oC</span><span style="font-size: 14px; font-family: 宋體;">灼燒至恒重的基準氧化鋅，置于燒杯中，加</span><span style="font-size: 14px; font-family: Calibri;">40mL</span><span style="font-size: 14px; font-family: 宋體;">鹽酸溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.3]</span><span style="font-size: 14px; font-family: 宋體;">，加熱溶解。冷卻后移入</span><span style="font-size: 14px; font-family: Calibri;">1000mL</span><span style="font-size: 14px; font-family: 宋體;">容量瓶中，稀釋至刻度，混勻。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.9.1</span><span style="font-size: 14px; font-family: 宋體;">　乙二胺四乙酸二鈉標準溶液的標定</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　移取<span style="font-size: 14px; font-family: Calibri;">25mL</span><span style="font-size: 14px; font-family: 宋體;">氧化鋅溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.9]</span><span style="font-size: 14px; font-family: 宋體;">，置于</span><span style="font-size: 14px; font-family: Calibri;">500mL</span><span style="font-size: 14px; font-family: 宋體;">錐形瓶中，加</span><span style="font-size: 14px; font-family: Calibri;">65mL</span><span style="font-size: 14px; font-family: 宋體;">水，用氨水</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.2]</span><span style="font-size: 14px; font-family: 宋體;">中和至</span><span style="font-size: 14px; font-family: Calibri;">pH7</span><span style="font-size: 14px; font-family: 宋體;">～</span><span style="font-size: 14px; font-family: Calibri;">8</span><span style="font-size: 14px; font-family: 宋體;">，再加</span><span style="font-size: 14px; font-family: Calibri;">10mL</span><span style="font-size: 14px; font-family: 宋體;">氨</span><span style="font-size: 14px; font-family: Calibri;">-</span><span style="font-size: 14px; font-family: 宋體;">氯化銨緩沖溶液甲</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.7]</span><span style="font-size: 14px; font-family: 宋體;">，</span><span style="font-size: 14px; font-family: Calibri;">5</span><span style="font-size: 14px; font-family: 宋體;">滴鉻黑</span><span style="font-size: 14px; font-family: Calibri;">T</span><span style="font-size: 14px; font-family: 宋體;">指示劑</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.6]</span><span style="font-size: 14px; font-family: 宋體;">，用乙二胺四乙酸二鈉標準溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.1]</span><span style="font-size: 14px; font-family: 宋體;">滴定至純藍色。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.9.2</span><span style="font-size: 14px; font-family: 宋體;">　計算</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　乙二胺四乙酸二鈉的摩爾濃度<span style="font-size: 14px; font-family: Calibri;">M</span><span style="font-size: 14px; font-family: 宋體;">按下式計算：</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">M = 25M1/V</span>　　　　　　　　<span style="font-size: 14px; font-family: Calibri;">(2)</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　式中：<span style="font-size: 14px; font-family: Calibri;">V</span><span style="font-size: 14px; font-family: 宋體;">——滴定時所耗乙二胺四乙酸二鈉標準溶液的體積，</span><span style="font-size: 14px; font-family: Calibri;">mL;</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">M1</span><span style="font-size: 14px; font-family: 宋體;">——氧化鋅標準溶液的摩爾濃度。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.3.10</span><span style="font-size: 14px; font-family: 宋體;">　氟化鉀</span><span style="font-size: 14px; font-family: Calibri;">(GB 1271-77)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">10%</span><span style="font-size: 14px; font-family: 宋體;">溶液。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.4</span><span style="font-size: 14px; font-family: 宋體;">　測定手續</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　稱取<span style="font-size: 14px; font-family: Calibri;">10g(</span><span style="font-size: 14px; font-family: 宋體;">稱準至</span><span style="font-size: 14px; font-family: Calibri;">0.001g)</span><span style="font-size: 14px; font-family: 宋體;">試樣，置于燒杯中，加</span><span style="font-size: 14px; font-family: Calibri;">80mL</span><span style="font-size: 14px; font-family: 宋體;">水加熱溶解，冷卻后移入</span><span style="font-size: 14px; font-family: Calibri;">500mL</span><span style="font-size: 14px; font-family: 宋體;">容量瓶中，稀釋至刻度，搖勻，靜置片刻，立即移取</span><span style="font-size: 14px; font-family: Calibri;">20mL</span><span style="font-size: 14px; font-family: 宋體;">于</span><span style="font-size: 14px; font-family: Calibri;">500mL</span><span style="font-size: 14px; font-family: 宋體;">錐形瓶中，移取</span><span style="font-size: 14px; font-family: Calibri;">50mL</span><span style="font-size: 14px; font-family: 宋體;">乙二胺四乙酸二鈉標準溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.1]</span><span style="font-size: 14px; font-family: 宋體;">，加</span><span style="font-size: 14px; font-family: Calibri;">25mL</span><span style="font-size: 14px; font-family: 宋體;">水，煮沸</span><span style="font-size: 14px; font-family: Calibri;">3</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　分鐘，冷卻后加<span style="font-size: 14px; font-family: Calibri;">3</span><span style="font-size: 14px; font-family: 宋體;">～</span><span style="font-size: 14px; font-family: Calibri;">4</span><span style="font-size: 14px; font-family: 宋體;">滴二甲酚橙指示劑</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.5]</span><span style="font-size: 14px; font-family: 宋體;">，以氨水</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.2]</span><span style="font-size: 14px; font-family: 宋體;">或鹽酸溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.3]</span><span style="font-size: 14px; font-family: 宋體;">調至橙色，加</span><span style="font-size: 14px; font-family: Calibri;">10mL</span><span style="font-size: 14px; font-family: 宋體;">乙酸</span><span style="font-size: 14px; font-family: Calibri;">-</span><span style="font-size: 14px; font-family: 宋體;">乙酸鈉緩沖溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.4]</span><span style="font-size: 14px; font-family: 宋體;">，用硝酸鉛標準溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.8]</span><span style="font-size: 14px; font-family: 宋體;">滴定至由黃色變為橙色即為終點。記下所消耗的體積</span><span style="font-size: 14px; font-family: Calibri;">(V1)</span><span style="font-size: 14px; font-family: 宋體;">，加</span><span style="font-size: 14px; font-family: Calibri;">15mL</span><span style="font-size: 14px; font-family: 宋體;">氟化鉀溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.10]</span><span style="font-size: 14px; font-family: 宋體;">煮沸</span><span style="font-size: 14px; font-family: Calibri;">5</span><span style="font-size: 14px; font-family: 宋體;">分鐘，冷卻后再用硝酸鉛標準溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.1.3.8]</span><span style="font-size: 14px; font-family: 宋體;">滴定到終點，記下所消耗的體積</span><span style="font-size: 14px; font-family: Calibri;">(V2)</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.5</span><span style="font-size: 14px; font-family: 宋體;">　結果的表示與計算。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.5.1</span><span style="font-size: 14px; font-family: 宋體;">　氧化鋁</span><span style="font-size: 14px; font-family: Calibri;">(AI2O3)</span><span style="font-size: 14px; font-family: 宋體;">的百分含量</span><span style="font-size: 14px; font-family: Calibri;">X1</span><span style="font-size: 14px; font-family: 宋體;">按下式計算：</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">X1=0.05098V2KM / 20G/500 </span><span style="font-size: 14px; font-family: 宋體;">×</span><span style="font-size: 14px; font-family: Calibri;">100</span>　　　　　　　　　　<span style="font-size: 14px; font-family: Calibri;">(3)</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　式中：<span style="font-size: 14px; font-family: Calibri;">V2</span><span style="font-size: 14px; font-family: 宋體;">——第二次滴定所消耗硝酸鉛標準溶液的體積，</span><span style="font-size: 14px; font-family: Calibri;">mL;</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">K</span><span style="font-size: 14px; font-family: 宋體;">——乙二胺四乙酸二鈉標準溶液對硝酸鉛標準溶液的比值</span><span style="font-size: 14px; font-family: Calibri;">;</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">M</span><span style="font-size: 14px; font-family: 宋體;">——乙二胺四乙酸二鈉標準溶液的摩爾濃度</span><span style="font-size: 14px; font-family: Calibri;">;</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">G</span><span style="font-size: 14px; font-family: 宋體;">——所稱試樣重量，</span><span style="font-size: 14px; font-family: Calibri;">g;</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">0.05098</span><span style="font-size: 14px; font-family: 宋體;">——每毫摩爾乙二胺四乙酸二鈉相當于</span><span style="font-size: 14px; font-family: Calibri;">AI2O3</span><span style="font-size: 14px; font-family: 宋體;">的量，</span><span style="font-size: 14px; font-family: Calibri;">g;</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　兩平行測定結果之差不大于<span style="font-size: 14px; font-family: Calibri;">0.1%</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.1.5.2</span><span style="font-size: 14px; font-family: 宋體;">　以</span><span style="font-size: 14px; font-family: Calibri;">Fe2O3</span><span style="font-size: 14px; font-family: 宋體;">計的其它金屬氧化物的百分含量</span><span style="font-size: 14px; font-family: Calibri;">X2</span><span style="font-size: 14px; font-family: 宋體;">按下式計算：</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">X2 =0.07985M(50-V1K-V2K) / 20G/500 </span><span style="font-size: 14px; font-family: 宋體;">×</span><span style="font-size: 14px; font-family: Calibri;">100</span>　　　　　　　　<span style="font-size: 14px; font-family: Calibri;">(4)</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　式中：<span style="font-size: 14px; font-family: Calibri;">V1</span><span style="font-size: 14px; font-family: 宋體;">——第一次滴定所耗硝酸鉛標準溶液的體積，</span><span style="font-size: 14px; font-family: Calibri;">mL;</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">K</span><span style="font-size: 14px; font-family: 宋體;">——同</span><span style="font-size: 14px; font-family: Calibri;">[2.1.5.1];</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">M</span><span style="font-size: 14px; font-family: 宋體;">——同</span><span style="font-size: 14px; font-family: Calibri;">[2.1.5.1];</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">G</span><span style="font-size: 14px; font-family: 宋體;">——同</span><span style="font-size: 14px; font-family: Calibri;">[2.1.5.1];</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">0.07985</span><span style="font-size: 14px; font-family: 宋體;">——每毫摩爾乙二胺四乙酸二鈉相當于</span><span style="font-size: 14px; font-family: Calibri;">Fe2O3</span><span style="font-size: 14px; font-family: 宋體;">的量，</span><span style="font-size: 14px; font-family: Calibri;">g</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><h1 label="標題居左" style="font-size: 32px; font-weight: bold; border-bottom-color: rgb(204, 204, 204); border-bottom-width: 2px; border-bottom-style: solid; padding: 0px 4px 0px 0px; text-align: left; margin: 0px 0px 10px;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2</span><span style="font-size: 14px; font-family: 宋體;">　游離酸含量的測定</span></span></h1><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2.1</span><span style="font-size: 14px; font-family: 宋體;">　原理</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　以酚酞為指示劑，用氫氧化鉀標準溶液滴定試液中的游離酸。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2.2</span><span style="font-size: 14px; font-family: 宋體;">　儀器設備</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　一般實驗室儀器和設備。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2.3</span><span style="font-size: 14px; font-family: 宋體;">　試劑和溶液</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2.3.1</span><span style="font-size: 14px; font-family: 宋體;">　氫氧化鉀</span><span style="font-size: 14px; font-family: Calibri;">(GB 2306-80)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">0.2N</span><span style="font-size: 14px; font-family: 宋體;">標準溶液，按</span><span style="font-size: 14px; font-family: Calibri;">GB 601-77</span><span style="font-size: 14px; font-family: 宋體;">《標準溶液制備方法》中的規定配制與標定。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2.3.2</span><span style="font-size: 14px; font-family: 宋體;">　硫酸</span><span style="font-size: 14px; font-family: Calibri;">(GB 625-77)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">0.2N</span><span style="font-size: 14px; font-family: 宋體;">溶液。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2.3.3</span><span style="font-size: 14px; font-family: 宋體;">　酚酞</span><span style="font-size: 14px; font-family: Calibri;">(HGB 3039-59)</span><span style="font-size: 14px; font-family: 宋體;">：指示劑，</span><span style="font-size: 14px; font-family: Calibri;">1%</span><span style="font-size: 14px; font-family: 宋體;">乙醇溶液，按</span><span style="font-size: 14px; font-family: Calibri;">GB 603-77</span><span style="font-size: 14px; font-family: 宋體;">配制，并用氫氧化鉀溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.2.3.1]</span><span style="font-size: 14px; font-family: 宋體;">中和至淡粉紅色。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2.3.4</span><span style="font-size: 14px; font-family: 宋體;">　氟化鉀</span><span style="font-size: 14px; font-family: Calibri;">(GB 1271-77)</span><span style="font-size: 14px; font-family: 宋體;">：約</span><span style="font-size: 14px; font-family: Calibri;">50%</span><span style="font-size: 14px; font-family: 宋體;">溶液，稱取</span><span style="font-size: 14px; font-family: Calibri;">500g</span><span style="font-size: 14px; font-family: 宋體;">氟化鉀，加入</span><span style="font-size: 14px; font-family: Calibri;">200mL</span><span style="font-size: 14px; font-family: 宋體;">不含二氧化碳的水溶解，用不含二氧化碳的水稀釋至</span><span style="font-size: 14px; font-family: Calibri;">1000mL</span><span style="font-size: 14px; font-family: 宋體;">。加</span><span style="font-size: 14px; font-family: Calibri;">2mL</span><span style="font-size: 14px; font-family: 宋體;">酚酞指示劑</span><span style="font-size: 14px; font-family: Calibri;">[2.2.3.3]</span><span style="font-size: 14px; font-family: 宋體;">，用氫氧化鉀飽和溶液或硫酸調至微紅色，濾去不溶物</span><span style="font-size: 14px; font-family: Calibri;">(</span><span style="font-size: 14px; font-family: 宋體;">不要洗滌</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">，貯于塑料瓶中。</span></span></p><h1 label="標題居左" style="font-size: 32px; font-weight: bold; border-bottom-color: rgb(204, 204, 204); border-bottom-width: 2px; border-bottom-style: solid; padding: 0px 4px 0px 0px; text-align: left; margin: 0px 0px 10px;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2.4</span><span style="font-size: 14px; font-family: 宋體;">　測定手續</span></span></h1><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　稱取<span style="font-size: 14px; font-family: Calibri;">10g(</span><span style="font-size: 14px; font-family: 宋體;">稱準至</span><span style="font-size: 14px; font-family: Calibri;">0.01g)</span><span style="font-size: 14px; font-family: 宋體;">試樣，置于燒杯中，加適量水，加熱至溶解，冷卻后移入</span><span style="font-size: 14px; font-family: Calibri;">500mL</span><span style="font-size: 14px; font-family: 宋體;">容量瓶中，稀釋至刻度，混勻。移取</span><span style="font-size: 14px; font-family: Calibri;">25mL</span><span style="font-size: 14px; font-family: 宋體;">于</span><span style="font-size: 14px; font-family: Calibri;">250mL</span><span style="font-size: 14px; font-family: 宋體;">錐形瓶中，移取</span><span style="font-size: 14px; font-family: Calibri;">10mL</span><span style="font-size: 14px; font-family: 宋體;">硫酸溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.2.3.2]</span><span style="font-size: 14px; font-family: 宋體;">，加</span><span style="font-size: 14px; font-family: Calibri;">5mL</span><span style="font-size: 14px; font-family: 宋體;">氟化鉀溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.2.3.4]</span><span style="font-size: 14px; font-family: 宋體;">和</span><span style="font-size: 14px; font-family: Calibri;">4</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　滴酚酞指示劑<span style="font-size: 14px; font-family: Calibri;">[2.2.3.3]</span><span style="font-size: 14px; font-family: 宋體;">，以氫氧化鉀標準溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.2.3.1]</span><span style="font-size: 14px; font-family: 宋體;">滴定至粉紅色</span><span style="font-size: 14px; font-family: Calibri;">(30</span><span style="font-size: 14px; font-family: 宋體;">秒鐘不褪色</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">即為終點。同時用</span><span style="font-size: 14px; font-family: Calibri;">25mL</span><span style="font-size: 14px; font-family: 宋體;">水做空白試驗。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.2.5</span><span style="font-size: 14px; font-family: 宋體;">　結果的表示</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　滴定試液時所耗氫氧化鉀標準溶液<span style="font-size: 14px; font-family: Calibri;">[2.2.3.1]</span><span style="font-size: 14px; font-family: 宋體;">的體積不得超過空白值。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3</span><span style="font-size: 14px; font-family: 宋體;">　水不溶物含量的測定</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.1</span><span style="font-size: 14px; font-family: 宋體;">　原理</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　將試樣溶于水中，過濾、洗滌，將不溶物干燥并稱重。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.2</span><span style="font-size: 14px; font-family: 宋體;">　儀器設備</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.2.1</span><span style="font-size: 14px; font-family: 宋體;">　一般實驗室儀器和設備。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.2.2</span><span style="font-size: 14px; font-family: 宋體;">　古氏坩堝：</span><span style="font-size: 14px; font-family: Calibri;">20</span><span style="font-size: 14px; font-family: 宋體;">或</span><span style="font-size: 14px; font-family: Calibri;">30mL</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.2.3</span><span style="font-size: 14px; font-family: 宋體;">　烘箱：能控制在</span><span style="font-size: 14px; font-family: Calibri;">105</span><span style="font-size: 14px; font-family: 宋體;">～</span><span style="font-size: 14px; font-family: Calibri;">110oC</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.3</span><span style="font-size: 14px; font-family: 宋體;">　試劑和溶液</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.3.1</span><span style="font-size: 14px; font-family: 宋體;">　氯化鋇</span><span style="font-size: 14px; font-family: Calibri;">(GB 652-78)</span><span style="font-size: 14px; font-family: 宋體;">：化學純，</span><span style="font-size: 14px; font-family: Calibri;">10%</span><span style="font-size: 14px; font-family: 宋體;">溶液。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.3.2</span><span style="font-size: 14px; font-family: 宋體;">　酸洗石棉</span><span style="font-size: 14px; font-family: Calibri;">(HG 3-1062-77)</span><span style="font-size: 14px; font-family: 宋體;">：取適量酸洗石棉用</span><span style="font-size: 14px; font-family: Calibri;">6N</span><span style="font-size: 14px; font-family: 宋體;">鹽酸煮沸</span><span style="font-size: 14px; font-family: Calibri;">20</span><span style="font-size: 14px; font-family: 宋體;">分鐘，水洗至中性，然后水調成稀糊狀備用。</span></span></p><h1 label="標題居左" style="font-size: 32px; font-weight: bold; border-bottom-color: rgb(204, 204, 204); border-bottom-width: 2px; border-bottom-style: solid; padding: 0px 4px 0px 0px; text-align: left; margin: 0px 0px 10px;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.4</span><span style="font-size: 14px; font-family: 宋體;">　測定手續</span></span></h1><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　將古氏坩堝裝到抽濾瓶上，用稀糊狀石棉在其篩板上下各均勻地鋪一層<span style="font-size: 14px; font-family: Calibri;">(</span><span style="font-size: 14px; font-family: 宋體;">每層約</span><span style="font-size: 14px; font-family: Calibri;">0.3g</span><span style="font-size: 14px; font-family: 宋體;">干石棉</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">。用熱水</span><span style="font-size: 14px; font-family: Calibri;">(</span><span style="font-size: 14px; font-family: 宋體;">溫度應高于所過濾的試液</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">洗至濾出液中不含石棉毛為止。取下坩堝，置于烘箱內于</span><span style="font-size: 14px; font-family: Calibri;">105</span><span style="font-size: 14px; font-family: 宋體;">～</span><span style="font-size: 14px; font-family: Calibri;">110oC</span><span style="font-size: 14px; font-family: 宋體;">干燥至恒重。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　稱取<span style="font-size: 14px; font-family: Calibri;">20g(</span><span style="font-size: 14px; font-family: 宋體;">稱準至</span><span style="font-size: 14px; font-family: Calibri;">0.01g)</span><span style="font-size: 14px; font-family: 宋體;">試樣，置于燒杯中，加</span><span style="font-size: 14px; font-family: Calibri;">100mL</span><span style="font-size: 14px; font-family: 宋體;">水加熱溶解，趁熱用已恒重的古氏坩堝過濾。殘渣以熱水洗滌至無硫酸根</span><span style="font-size: 14px; font-family: Calibri;">(</span><span style="font-size: 14px; font-family: 宋體;">用氯化鋇溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.3.3.1]</span><span style="font-size: 14px; font-family: 宋體;">檢驗</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">炎止。將坩堝置于烘箱內于</span><span style="font-size: 14px; font-family: Calibri;">05</span><span style="font-size: 14px; font-family: 宋體;">～</span><span style="font-size: 14px; font-family: Calibri;">110oC</span><span style="font-size: 14px; font-family: 宋體;">干燥至恒重。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.3.5</span><span style="font-size: 14px; font-family: 宋體;">　計算</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　水不溶物的百分含量<span style="font-size: 14px; font-family: Calibri;">X3</span><span style="font-size: 14px; font-family: 宋體;">按下式計算：</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">X3 = G1-G2/G </span><span style="font-size: 14px; font-family: 宋體;">×</span><span style="font-size: 14px; font-family: Calibri;">100</span>　　　　　　　　<span style="font-size: 14px; font-family: Calibri;">(5)</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　式中：<span style="font-size: 14px; font-family: Calibri;">G1</span><span style="font-size: 14px; font-family: 宋體;">——水不溶物和坩堝重量，</span><span style="font-size: 14px; font-family: Calibri;">g;</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">G2</span><span style="font-size: 14px; font-family: 宋體;">——坩堝重量，</span><span style="font-size: 14px; font-family: Calibri;">g;</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">G</span><span style="font-size: 14px; font-family: 宋體;">——試樣重量，</span><span style="font-size: 14px; font-family: Calibri;">g;</span></span></p><h1 label="標題居左" style="font-size: 32px; font-weight: bold; border-bottom-color: rgb(204, 204, 204); border-bottom-width: 2px; border-bottom-style: solid; padding: 0px 4px 0px 0px; text-align: left; margin: 0px 0px 10px;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4</span><span style="font-size: 14px; font-family: 宋體;">　砷含量的測定</span></span></h1><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.1</span><span style="font-size: 14px; font-family: 宋體;">　原理</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　在酸性溶液中，以碘化鉀，氯化亞錫將砷化物還原為三價砷，然后與鋅粒和酸產生的氫氣生成砷化氫氣體，用溴化汞試紙吸收，生成由黃色至棕黃色砷化汞色斑，與標準比色定砷。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.2</span><span style="font-size: 14px; font-family: 宋體;">　儀器和設備</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.2.1</span><span style="font-size: 14px; font-family: 宋體;">　一般實驗室儀器和設備。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.2.2</span><span style="font-size: 14px; font-family: 宋體;">　定砷器：符合</span><span style="font-size: 14px; font-family: Calibri;">GB 610-57</span><span style="font-size: 14px; font-family: 宋體;">《砷測定法》中圖</span><span style="font-size: 14px; font-family: Calibri;">1</span><span style="font-size: 14px; font-family: 宋體;">的要求。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.3</span><span style="font-size: 14px; font-family: 宋體;">　試劑和溶液</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.3.1</span><span style="font-size: 14px; font-family: 宋體;">　鹽酸</span><span style="font-size: 14px; font-family: Calibri;">(GB 622-77)</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.3.2</span><span style="font-size: 14px; font-family: 宋體;">　碘化鉀</span><span style="font-size: 14px; font-family: Calibri;">(GB 1272-77)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">15%</span><span style="font-size: 14px; font-family: 宋體;">溶液。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.3.3</span><span style="font-size: 14px; font-family: 宋體;">　氯化亞錫</span><span style="font-size: 14px; font-family: Calibri;">(GB 638-78)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">40%</span><span style="font-size: 14px; font-family: 宋體;">溶液。按</span><span style="font-size: 14px; font-family: Calibri;">GB 603-77</span><span style="font-size: 14px; font-family: 宋體;">配制。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.3.4</span><span style="font-size: 14px; font-family: 宋體;">　無砷金屬鋅：</span><span style="font-size: 14px; font-family: Calibri;">(HGB 3073-59)</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.3.5</span><span style="font-size: 14px; font-family: 宋體;">　乙酸鉛棉花：按</span><span style="font-size: 14px; font-family: Calibri;">GB 603-77</span><span style="font-size: 14px; font-family: 宋體;">配制。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.3.6</span><span style="font-size: 14px; font-family: 宋體;">　溴化汞試紙：按</span><span style="font-size: 14px; font-family: Calibri;">GB 603-77</span><span style="font-size: 14px; font-family: 宋體;">配制。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.3.7</span><span style="font-size: 14px; font-family: 宋體;">　砷標準溶液：每毫升含</span><span style="font-size: 14px; font-family: Calibri;">0.001mg</span><span style="font-size: 14px; font-family: 宋體;">砷。按</span><span style="font-size: 14px; font-family: Calibri;">GB 602-77</span><span style="font-size: 14px; font-family: 宋體;">《雜質標準溶液制備方法》配制后，臨用時稀釋</span><span style="font-size: 14px; font-family: Calibri;">100</span><span style="font-size: 14px; font-family: 宋體;">倍。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.4.4</span><span style="font-size: 14px; font-family: 宋體;">　測定手續</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　稱取<span style="font-size: 14px; font-family: Calibri;">5g(</span><span style="font-size: 14px; font-family: 宋體;">稱準至</span><span style="font-size: 14px; font-family: Calibri;">0.01g)</span><span style="font-size: 14px; font-family: 宋體;">試樣，加適量水溶解，移入</span><span style="font-size: 14px; font-family: Calibri;">100mL</span><span style="font-size: 14px; font-family: 宋體;">容量瓶中，稀釋至刻度，搖勻。移取</span><span style="font-size: 14px; font-family: Calibri;">20mL</span><span style="font-size: 14px; font-family: 宋體;">于測砷瓶中。另外移取</span><span style="font-size: 14px; font-family: Calibri;">5mL</span><span style="font-size: 14px; font-family: 宋體;">砷標準溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.4.3.7]</span><span style="font-size: 14px; font-family: 宋體;">于另一測砷瓶中并加</span><span style="font-size: 14px; font-family: Calibri;">20mL</span><span style="font-size: 14px; font-family: 宋體;">水。向兩個測砷瓶內分別加入：</span><span style="font-size: 14px; font-family: Calibri;">6mL</span><span style="font-size: 14px; font-family: 宋體;">鹽酸</span><span style="font-size: 14px; font-family: Calibri;">[2.4.3.1]</span><span style="font-size: 14px; font-family: 宋體;">、</span><span style="font-size: 14px; font-family: Calibri;">5mL</span><span style="font-size: 14px; font-family: 宋體;">碘化鉀溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.4.3.2]</span><span style="font-size: 14px; font-family: 宋體;">和</span><span style="font-size: 14px; font-family: Calibri;">5</span><span style="font-size: 14px; font-family: 宋體;">滴氯化亞錫溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.4.3.3]</span><span style="font-size: 14px; font-family: 宋體;">，搖勻后放置</span><span style="font-size: 14px; font-family: Calibri;">10</span><span style="font-size: 14px; font-family: 宋體;">分鐘，加</span><span style="font-size: 14px; font-family: Calibri;">2g</span><span style="font-size: 14px; font-family: 宋體;">無砷金屬鋅</span><span style="font-size: 14px; font-family: Calibri;">[2.4.3.4]</span><span style="font-size: 14px; font-family: 宋體;">立即將已裝好乙酸鉛棉花及溴化汞試紙的定砷器裝上并塞緊，于暗處放置</span><span style="font-size: 14px; font-family: Calibri;">1</span><span style="font-size: 14px; font-family: 宋體;">小時，取出溴化汞試紙。試樣瓶的溴化汞試紙所呈黃色不得深于標準。</span></span></p><h1 label="標題居左" style="font-size: 32px; font-weight: bold; border-bottom-color: rgb(204, 204, 204); border-bottom-width: 2px; border-bottom-style: solid; padding: 0px 4px 0px 0px; text-align: left; margin: 0px 0px 10px;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.5</span><span style="font-size: 14px; font-family: 宋體;">　重金屬含量的測定</span></span></h1><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.5.1</span><span style="font-size: 14px; font-family: 宋體;">　原理</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　在微酸性介質中，用飽和硫化氫水沉淀重金屬，與標準比較定量。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.5.2</span><span style="font-size: 14px; font-family: 宋體;">　儀器設備</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.5.3 </span><span style="font-size: 14px; font-family: 宋體;">　試劑和溶液</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.5.3.1</span><span style="font-size: 14px; font-family: 宋體;">　冰乙酸</span><span style="font-size: 14px; font-family: Calibri;">(GB 676-78)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">30%</span><span style="font-size: 14px; font-family: 宋體;">溶液。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.5.3.2</span><span style="font-size: 14px; font-family: 宋體;">　飽和硫化氫水：按</span><span style="font-size: 14px; font-family: Calibri;">GB 603-77</span><span style="font-size: 14px; font-family: 宋體;">配制。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.5.3.3</span><span style="font-size: 14px; font-family: 宋體;">　鉛標準溶液：每毫升相當</span><span style="font-size: 14px; font-family: Calibri;">0.01mg</span><span style="font-size: 14px; font-family: 宋體;">鉛。銨</span><span style="font-size: 14px; font-family: Calibri;">GB 602-77</span><span style="font-size: 14px; font-family: 宋體;">配制后稀釋</span><span style="font-size: 14px; font-family: Calibri;">10</span><span style="font-size: 14px; font-family: 宋體;">倍。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.5.3.4</span><span style="font-size: 14px; font-family: 宋體;">　鹽酸羥胺</span><span style="font-size: 14px; font-family: Calibri;">(HG 3-967-67)</span><span style="font-size: 14px; font-family: 宋體;">：</span><span style="font-size: 14px; font-family: Calibri;">20%</span><span style="font-size: 14px; font-family: 宋體;">溶液。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">2.5.4</span><span style="font-size: 14px; font-family: 宋體;">　測定手續</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　稱取<span style="font-size: 14px; font-family: Calibri;">10g(</span><span style="font-size: 14px; font-family: 宋體;">稱準至</span><span style="font-size: 14px; font-family: Calibri;">0.01g)</span><span style="font-size: 14px; font-family: 宋體;">試樣，以適量水溶解，移入</span><span style="font-size: 14px; font-family: Calibri;">100mL</span><span style="font-size: 14px; font-family: 宋體;">溶解瓶中，稀釋至刻度，搖勻。移取</span><span style="font-size: 14px; font-family: Calibri;">10mL</span><span style="font-size: 14px; font-family: 宋體;">上層清液，置于</span><span style="font-size: 14px; font-family: Calibri;">50mL</span><span style="font-size: 14px; font-family: 宋體;">納氏比色管中，加取同樣的比色管</span><span style="font-size: 14px; font-family: Calibri;">1</span><span style="font-size: 14px; font-family: 宋體;">支，加入</span><span style="font-size: 14px; font-family: Calibri;">20mL</span><span style="font-size: 14px; font-family: 宋體;">鉛標準溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.5.3.3]</span><span style="font-size: 14px; font-family: 宋體;">，分別向樣品和標準管中加</span><span style="font-size: 14px; font-family: Calibri;">0.5mL</span><span style="font-size: 14px; font-family: 宋體;">乙酸溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.5.3.1]</span><span style="font-size: 14px; font-family: 宋體;">、</span><span style="font-size: 14px; font-family: Calibri;">5mL</span><span style="font-size: 14px; font-family: 宋體;">鹽酸羥胺溶液</span><span style="font-size: 14px; font-family: Calibri;">[2.5.3.4]</span><span style="font-size: 14px; font-family: 宋體;">，開口搖動</span><span style="font-size: 14px; font-family: Calibri;">10</span><span style="font-size: 14px; font-family: 宋體;">分鐘，加</span><span style="font-size: 14px; font-family: Calibri;">10mL</span><span style="font-size: 14px; font-family: 宋體;">飽和硫化氫水</span><span style="font-size: 14px; font-family: Calibri;">[2.5.3.2]</span><span style="font-size: 14px; font-family: 宋體;">，加水至刻度，搖勻。于暗處放置</span><span style="font-size: 14px; font-family: Calibri;">5</span><span style="font-size: 14px; font-family: 宋體;">分鐘，比較，樣品管不得深于標準管。</span></span></p><h1 label="標題居左" style="font-size: 32px; font-weight: bold; border-bottom-color: rgb(204, 204, 204); border-bottom-width: 2px; border-bottom-style: solid; padding: 0px 4px 0px 0px; text-align: left; margin: 0px 0px 10px;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">3</span><span style="font-size: 14px; font-family: 宋體;">　驗收規則</span></span></h1><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">3.1</span><span style="font-size: 14px; font-family: 宋體;">　凈水劑硫酸鋁由生產廠的質量檢驗部門按本標準的規定進行檢驗。生產廠應保證所有出廠的產品符合本標準的要求。每批出廠的產品都應附有質量證明書。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">3.2</span><span style="font-size: 14px; font-family: 宋體;">　使用單位有權按照本標準的規定對所收到的凈水劑硫酸鋁的質量進行核驗，核驗其是否符合本標準的要求。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">3.3</span><span style="font-size: 14px; font-family: 宋體;">　取樣方法：由交付總袋數的</span><span style="font-size: 14px; font-family: Calibri;">10%</span><span style="font-size: 14px; font-family: 宋體;">中取樣，若總數少于</span><span style="font-size: 14px; font-family: Calibri;">50</span><span style="font-size: 14px; font-family: 宋體;">袋時，選取的袋數也不應少于</span><span style="font-size: 14px; font-family: Calibri;">5</span><span style="font-size: 14px; font-family: 宋體;">袋。取樣時應除去表面</span><span style="font-size: 14px; font-family: Calibri;">150mm</span><span style="font-size: 14px; font-family: 宋體;">厚的硫酸鋁，以清潔、干燥的鋁制取樣器自袋口中心垂直插入</span><span style="font-size: 14px; font-family: Calibri;">1/2</span><span style="font-size: 14px; font-family: 宋體;">深處取樣?？偣踩硬坏蒙儆?/span><span style="font-size: 14px; font-family: Calibri;">2kg</span><span style="font-size: 14px; font-family: 宋體;">。將選取的試樣仔細混勻，以四分法縮分至</span><span style="font-size: 14px; font-family: Calibri;">1kg</span><span style="font-size: 14px; font-family: 宋體;">，分裝于兩個清潔、干燥的帶磨口塞的玻璃瓶中。瓶上貼標簽注明：生產廠稱、產品名稱、生產日期和取樣日期。一瓶用于檢驗，加一瓶密封保存</span><span style="font-size: 14px; font-family: Calibri;">(</span><span style="font-size: 14px; font-family: 宋體;">保存三個月</span><span style="font-size: 14px; font-family: Calibri;">)</span><span style="font-size: 14px; font-family: 宋體;">備用。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">3.4</span><span style="font-size: 14px; font-family: 宋體;">　檢驗結果如有一項指標不符合本標準要求時，應重新自兩倍量的包裝中取樣進行檢驗。重新檢驗的結果，即使有一項指標不符合本標準要求時，則整批產品不能驗收。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">3.5</span><span style="font-size: 14px; font-family: 宋體;">　當供需雙方對產品質量發生異議時，應由仲裁單位仲裁解決。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">4</span><span style="font-size: 14px; font-family: 宋體;">　包裝、標志、貯存和運輸</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">4.1</span><span style="font-size: 14px; font-family: 宋體;">　凈水劑硫酸鋁用內涂聚乙烯或內襯聚乙烯袋的編織袋包裝，每袋凈重</span><span style="font-size: 14px; font-family: Calibri;">50kg</span><span style="font-size: 14px; font-family: 宋體;">。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">4.2</span><span style="font-size: 14px; font-family: 宋體;">　外包裝上應附有下列標志：產品名稱、凈重、生產廠名、本標準編號和產品的注明商標。還應涂有清晰、牢固的“凈水劑”字樣。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　<span style="font-size: 14px; font-family: Calibri;">4.3</span><span style="font-size: 14px; font-family: 宋體;">　凈水劑硫酸鋁在貯運時應防止有毒物質的污染和受潮。</span></span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　附加說明：</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　本標準由食品添加劑標準化技術委員會提出，由化工部天津化工研究院和中國醫學科學院食品衛生檢驗所歸口。</span></p><p style="line-height: 3em;"><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">　　本標準由化工部天津化工研究院和徐州市衛生防疫站負責起草。</span></p></div> <h3 class="tag">相關標簽：<a href="http://www.buildinstantrapport.com/tag/%E5%87%80%E6%B0%B4%E7%B5%AE%E5%87%9D%E5%89%82">凈水絮凝劑</a> </h3> <div class="page">上一篇：<a href="http://www.buildinstantrapport.com/news/349.html">硫酸亞鐵安全預防措施</a><br />下一篇：<span><a href="http://www.buildinstantrapport.com/news/354.html">聚合氯化硫酸鐵的使用方法及注意事項</a></span></div> </div>  <div class="relate_list" style="display:none"> <div class="relateproduct relate"><h4>相關產品：</h4> <div class="content"> <ul id="relate_p" class="product_list clearfix"> <li> <a href="http://www.buildinstantrapport.com/product/159.html" title="水質改良劑" class="img"> <img src="http://www.buildinstantrapport.com/data/images/product/thumb_20151022100612_385.jpg" alt="水質改良劑" width="120" 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