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</ol> </div> </li> </ul> <img src="/skins/391495/images/mulu_bottom.jpg" /> </div>  <article class="SinglePage"> <div class="Current">當前位置：<a href="/article.html">技術支持</a>><span>重金屬分析儀的檢測原理和流程具體如下</span> <span class="column">技術文章</span> </div> <div class="page"> <div class="t_950_1">  <div class="page"> <div class="t_950_1">  <div class="pro">  <div class="news_con"> <h3>重金屬分析儀的檢測原理和流程具體如下</h3> <div class="time">點擊次數：62 發布時間：2022-04-22</div> <div class="news_wz"><div>　　食品、土壤、水質逐漸被工業廢氣、廢水、廢渣所污染，甚至有些人直接用工業廢水澆灌莊稼，造成土壤耕作層內的鎘、銅、砷、鉻、汞、鎳、鐵、鋁、鋅、錳、銅等重金屬大量富積、積累，特別是城市郊區現象更為嚴重;加上大量使用無機化學農藥等致使蔬菜和魚類體內的重金屬含量嚴重超標的情況，不斷在人體內積累，導致消費者重金屬慢性中毒現象發生。我們開發出了重金屬分析儀，可對水質樣品中的鉛、砷、鉻、鎘、汞進行快速聯合測定。</div><div>　　<strong><a href="http://www.skeelepetroleum.com" target="_blank">重金屬分析儀</a></strong>檢測原理：樣品經消化后，所有形態的重金屬都轉化為離子型態，加入相關檢測試劑后顯色，在一定濃度范圍內溶液顏色的深淺與重金屬的含量呈比例關系，再通過儀器進行測定得出含量值，與國家標準農產品安全質量無公害蔬菜安全要求允許限量的標準進行比較，來判斷蔬菜樣品重金屬含量。</div><div>　　重金屬分析儀檢測的流程具體如下：</div><div>　　1、將待測樣品先用蒸餾水或純凈水沖洗一下(洗去表面泥土，以免干擾檢測)，晾干，用刀或剪刀將樣品剪成lcm左右的小塊，稱取處理好的樣品1g置于20mL塑料取樣管中，加水10mL。</div><div>　　2、加入4滴試劑A，用攪拌針將樣品壓在液面下，蓋上取樣管蓋，上下搖動10次，放置1min，再上下搖動10次，取出果蔬樣品，溶液作為待測液備用。</div><div>　　3、移取樣品液1mL于一支空白樣品管中。加入3滴試劑B，蓋上取樣管蓋，上下搖動5次，再分別加入2滴試劑C和2滴試劑D，上下搖動5次，室溫顯色5min。</div><div>　　將樣管與果蔬鉛含量快速檢測卡進行比較，即可讀出被測樣品中鉛含量的參考濃度。注意事項：當樣品中含有鐵離子、鈣離子、鎂離子等金屬離子時可能會對溶液顯色造成假陽性。此方法適用于游離鉛測定，重金屬分析儀對有機鉛測定時需按常規實驗室方法進行消解。</div></div> <div class="ye">上一篇：<a href="/Article-2992925.html">水質分析儀的結構特色和使用注意事項</a> 下一篇：<a href="/Article-2980141.html">TOC在線總有機碳分析儀具體分析的是啥參數呢？</a></div> </div>  </div>  </div> </div> </div> </div> </article> </div> <div class="clear"></div> </section>   <div class="footer"> <div class="footer_in"> <div class="info clearfix"> <ul> <li><a href="/">首頁</a></li> <li>|</li> <li><a href="/aboutus.html" 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