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中部开始 --> <div class="container"> <!--用于打印和文字放大--> <div class="content_tools_box"> <p class="content_tools"> <a href="javascript:CallPrint('print');">打印本文</a> <a href="javascript:doZoom(14)">小</a> <a href="javascript:doZoom(18)">中</a> <a href="javascript:doZoom(20)">大</a> </p> <div class="clearfix"></div> <script src="/template/f130/skin/js/c_tool.js" type="text/javascript" ></script> </div> <!--/用于打印和文字放大--> <!-- 正文 --> <div class="lead" id="print"> <p style="text-indent: 2em;">湿法消解是在加热条件下，用酸或碱溶液破坏样品中有机物或还原性物质的方法。它是元素分析中直接、有效、经济的样品前处理方法。该方法简单，可适用于生物样品中微量金属元素的分析。</p><p style="text-indent: 2em;"><br/></p><p style="text-align: center"><img src="/cn/upload/images/202106/16245897189438.jpg" title="16245897189438.jpg" alt="ABUIABACGAAgkK2w9wUowJrgrwIwygI4wgI.jpg"/></p><p style="text-indent: 2em;">湿法消解又称湿式灰化法或湿式氧化法。在食物中加入适量的氧化性强酸，同时加热脱酸，为了加速氧化过程，可同时加入各种催化剂。这种破坏食物中有机物的方法称为湿法消化。对含有大量有机物的生物样品，通常采用混合酸进行消化。其中，沸点在120℃以上的硝酸是应用广泛的预氧化剂，可破坏样品中的有机物；硫酸具有较强的脱水能力，可使有机物碳化，部分降解不溶性物质，提高混合酸的沸点；热高氯酸是一种强氧化剂和脱水剂，因其沸点较高，在除去硝酸后可继续氧化样品。</p><p style="text-indent: 2em;">在含硫酸的混合酸中，过氧化氢的氧化是基于过氧二磺酸的形成。由于硫酸的脱水作用，混合溶液能迅速分解有机物。当样品基质中含有较多的无机物时，通常采用含盐酸的混合酸进行<strong>湿法消解</strong>，而氢氟酸主要用于分解含硅酸盐的样品。</p></div> <div class="blank30"></div> <!-- 自定义表单开始 --> <!-- 自定义表单结束 --> <div class="blank60"></div> <!-- 上下页开始 --> <div id="page"> <strong>上一篇</strong><a href="/index.php?case=archive&act=show&aid=186">主动做好高通量微波消解这三项措施，保证危险情况不易发生</a> <div class="blank10"></div> <strong>下一篇</strong><a href="/index.php?case=archive&act=show&aid=188">样品前处理技术在不断丰富和创新</a> </div> <!-- 上下页结束 --> </div><!-- /container --> <!-- 相关文章开始 --> <div class="blank60"></div> <!-- 页面标题开始 --> <div class="title"> <h3><a><small>相关内容</small></a></h3> <p></p> <span>——</span> </div> <!-- 页面标题结束 --> <hr class="featurette-divider"> <div class="container 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