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$(document).ready(function(){ var obj = $("#subNav").children("li"); var lid="#page1"; //alert(lid); //$(obj[xid]).removeClass(); $(lid).addClass("hover"); }); </script> <div id="wmgmi0u" class="main_right"> <div id="uweiy0w" class="main_top1"> <p>您的位置：<a href="/">首頁(yè)</a> > <a href="/article.html" title="技術(shù)文章">技術(shù)文章</a> > 默克COD試劑的主要特點(diǎn)和具體操作步驟</p> <big>技術(shù)文章</big> </div> <div id="yyyuqim" class="clear"></div> <div id="muoaoog" class="news_top"> <h2>默克COD試劑的主要特點(diǎn)和具體操作步驟</h2> <p>更新時(shí)間：2024-05-22 瀏覽次數：<span id="llcs">260</span></p> </div> <div id="2kseag2" class="news_article" deep="2"><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　默克COD試劑是一種用于測定水樣中化學(xué)需氧量（ChemicalOxygenDemand，簡(jiǎn)稱(chēng)COD）的試劑。COD是衡量水體中有機污染物含量的重要指標，它反映了水樣中可被化學(xué)氧化劑氧化的物質(zhì)的總量。這些物質(zhì)主要包括有機物、亞硝酸鹽、硝酸鹽和亞鐵鹽等。COD值越高，說(shuō)明水體中的有機污染越嚴重。<br /> </span></span></div><p align="center"><span style="font-size: 14px;"><span style="font-family: 宋體;"><img src="https://img46.chem17.com/gxhpic_81339a52c3/c36fe6f24c64508fc9053a112aaf8958cb730f65baa2bc0b06797a3a674c27e84f74f9cd173450d0.jpg" width="500" height="500" align="middle" alt="" /></span></span></p><p><span style="font-size: 14px;"><span style="font-family: 宋體;"> </span></span></p><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　COD的測定通常采用重鉻酸鉀法或過(guò)硫酸鉀氧化法。在重鉻酸鉀法中，水樣與酸性重鉻酸鉀溶液混合，經(jīng)過(guò)一定時(shí)間的反應后，剩余的重鉻酸鉀用硫酸亞鐵銨滴定，通過(guò)消耗的硫酸亞鐵銨量計算出COD值。在過(guò)硫酸鉀氧化法中，水樣與過(guò)硫酸鉀溶液混合，經(jīng)過(guò)加熱反應后，用紫外分光光度計測定吸光度，從而計算出COD值。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　<strong>默克COD試劑</strong>的主要特點(diǎn)：</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　1.準確性高：采用高質(zhì)量的化學(xué)試劑，確保測定結果的準確性和可靠性。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　2.操作簡(jiǎn)便：配套的試劑和說(shuō)明書(shū)使得操作過(guò)程簡(jiǎn)單易懂，無(wú)需復雜的實(shí)驗技巧。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　3.快速高效：優(yōu)化的試劑配方和反應條件，縮短了測定時(shí)間，提高了工作效率。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　4.穩定性好：試劑在適當的儲存條件下具有良好的穩定性，便于長(cháng)期使用。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　5.適用性廣：適用于各種類(lèi)型的水樣，包括地表水、地下水、工業(yè)廢水和生活污水等。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　默克COD試劑的操作步驟：</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　1.準備水樣：取適量待測水樣，如有需要，進(jìn)行適當稀釋。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　2.配制試劑：按照說(shuō)明書(shū)的比例配制所需的試劑。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　3.反應：將水樣和試劑混合，置于恒溫水浴或加熱器中進(jìn)行反應。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　4.滴定或測定：反應完成后，采用滴定法或分光光度法測定剩余的氧化劑或生成的物質(zhì)。</span></span></div><div><span style="font-size: 14px;"><span style="font-family: 宋體;">　　5.計算COD值：根據消耗的試劑量或吸光度，依據標準曲線(xiàn)計算出水樣的COD值。</span></span></div></div> <ul class="news_page"><li><span>(上一篇)</span>：<a href="/ymhb-Article-3719563/">WTW儀器試劑能夠提高測試效率和數據可靠性</a></li><li><span>(下一篇)</span>：<a href="/ymhb-Article-3698117/">深入解析實(shí)驗室溶氧分析儀的工作原理與優(yōu)勢</a></li></ul> </div> <div id="ui2sq22" class="clear"></div> </div> <div class="ycig4ss" id="foot"> <div id="uyuskqg" class="beijing"> <p><a href="/">首頁(yè)</a>|<a href="/aboutus.html" rel="nofollow">公司簡(jiǎn)介</a>|<a href="/products.html">產(chǎn)品中心</a>|<a href="/article.html">技術(shù)文章</a>|<a href="/news.html">公司新聞</a>|<a href="/honor.html" rel="nofollow">資質(zhì)證書(shū)</a>|<a href="/contact.html" rel="nofollow">聯(lián)系我們</a>|<a href="/sitemap.xml" target="_blank">GoogleSitemap</a></p> <p>聯(lián)系人：吳小姐郵箱：xmyimai@163.com</p> <p><a target="_blank" rel="nofollow">管理登陸</a> 技術(shù)支持：<a 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