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href="http:///">cod氨氮測定儀</a></strong>探測出水中氨氮的來源主要為生活污水中含氮有機物受微生物作用的分解產(chǎn)物，某些工業(yè)廢水，如焦化廢水和合成氨化肥廠廢水等，以及農(nóng)田排水。此外，在無氧環(huán)境中，水中存在的亞硝酸鹽亦可受微生物作用，還原為氨。在有氧環(huán)境中，水中氨亦可轉變?yōu)閬喯跛猁}，甚至繼續(xù)轉變?yōu)橄跛猁}。<strong>cod氨氮測定儀</strong>測定水中各種形態(tài)的氮化合物，有助于評價水體被污染和自凈狀況，獨立設計的加熱分解裝置，系統(tǒng)可方便的實現(xiàn)無線傳輸。</div><div> </div><div> 該絡合物的色度與氨氮的含量成正比，水中鈣、鎂和鐵等金屬離子、硫化物、醛和酮類、顏色，以及混濁等均干擾測定，需作相應的預處理。<strong>cod氨氮測定儀</strong>尋求到另一種途徑，確定一種綜合指標，利用有機化合物的還原性質，將耗氧的量作為一項新的指標，這樣化學需氧量和生化需氧量就應運而生了。由于生物氧化是一個緩慢的過程，一個月的時間也只能氧化到70％左右，這對污染治理的實際操作就顯得滯后。</div> </div> <div id="aqgwbbhhdpu" class="NyPro_PrevNext"> <p class="NyProPrev"><img src="/skins/257424/images/jt10.png" />上一個：<a href="/jsshengaohua-Article-1038360/">實驗室ph計廠家為您講解ph計的作用</a></p> <a href="/article.html" class="NyProAll"><img src="/skins/257424/images/ProAll.png" />返回列表</a> <p class="NyProNext">下一個：<a href="/jsshengaohua-Article-1021506/">便攜式cod測定儀的作用有哪些？</a><img src="/skins/257424/images/jt11.png" /></p> <div id="aqgwbbhhdpu" class="clear"></div> 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