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class="NyNewsdetail_title">如何選擇COD水質(zhì)在線分析儀</h1> <div id="msycia6gyuc" class="NyNewsdetail_tips">更新時(shí)間：2022-10-14 點(diǎn)擊次數(shù)：826</div> <div id="msycia6gyuc" class="NyNewsdetail_con"> <p> COD是環(huán)境水污染監(jiān)測(cè)里面一個(gè)比較重要的有機(jī)物指標(biāo)，水質(zhì)在線分析儀的應(yīng)用范圍比較廣，應(yīng)用于污水處理廠、各種工廠、市政管網(wǎng)、江河湖海地表水監(jiān)測(cè)。</p><p>因此，今天衛(wèi)水環(huán)保給大家介紹一下選擇COD水質(zhì)在線分析儀。</p><p> 首先在購(gòu)買儀器的同時(shí)，自己心里會(huì)有一定的需求和預(yù)算，在購(gòu)買時(shí)可以仔細(xì)詢問(wèn)，儀器配帶的功能包括自動(dòng)報(bào)警、數(shù)據(jù)傳輸、打印、自動(dòng)校正等。</p><p> 其次選擇儀器的分析方法，不同的方法會(huì)導(dǎo)致結(jié)果的偏差。現(xiàn)在市場(chǎng)上常見(jiàn)的COD分析方法有三種：重鉻酸鉀回流法、非分散紅外吸收法、紫外分光光度法，這其中大部分都是應(yīng)用的依據(jù)國(guó)標(biāo)的檢測(cè)標(biāo)準(zhǔn)。</p><p> 第三要有一定的數(shù)據(jù)參考，儀器的一些技術(shù)參數(shù)、我們知道水樣中含有氯離子會(huì)干擾到COD的測(cè)定，所以是攜帶稀釋功能的。在量程上應(yīng)滿足合適的按照國(guó)家標(biāo)準(zhǔn) 排放濃度的2-3倍。儀器的準(zhǔn)確度、重復(fù)性、和穩(wěn)定性都是要考量的Z點(diǎn)。</p><p> 只要從以上幾個(gè)方面進(jìn)行比較，然后結(jié)合自己的需要和預(yù)算，基本上可以選擇到自己滿意的COD水質(zhì)在線分析儀。</p><p> </p><p><br/></p> </div> <div 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