水質檢測指標基本概念 - 常見問題 - 國內較早生產COD快速測定儀的廠家_COD測定儀_COD檢測儀_COD消解儀_多參數水質測定儀_總氮測定儀_廣州連華環?？萍加邢薰?/title> <meta name="keywords" content="COD測定儀,COD檢測儀,COD消解儀,多參數水質測定儀,總氮測定儀,廣州連華環?？萍加邢薰?> <meta name="description" content="1、COD化學需氧量COD（Chemical Oxygen Demand）是以化學方法測量水樣中需要被氧化的還原性物質的量。廢水、廢水處理廠出水和受污染的水 "> <script type="text/javascript"> if (/Android|webOS|iPhone|iPod|BlackBerry|Windows CE|Windows Phone/i.test(navigator.userAgent)) { if (window.location.href.indexOf("?pc") < 0) { try { location.href = 'http://m.gdlhkj.com/'; } catch(e) {} } } </script> <link href="http://www.experiencemiraclelivingtoday.com/statics/css/css/style.css" rel="stylesheet" /> <link href="http://www.experiencemiraclelivingtoday.com/statics/css/css/page.css" rel="stylesheet" /> <script src="http://www.experiencemiraclelivingtoday.com/statics/js/js/jquery.js"></script> <script src="http://www.experiencemiraclelivingtoday.com/statics/js/js/write.js"></script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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title="從幕后走向前臺土壤重金屬污染引發廣泛關注 ">從幕后走向前臺土壤重…</a></dd> </ul> </div> <div class="right_list left_class"> <p class="position yh_txt"><span>當前位置：<a href="http://www.experiencemiraclelivingtoday.com/">首頁</a> 》 <a href="http://www.experiencemiraclelivingtoday.com/index.php?m=content&c=index&a=lists&catid=153">新聞中心</a> > <a href="http://www.experiencemiraclelivingtoday.com/index.php?m=content&c=index&a=lists&catid=156">常見問題</a> > </span></p> <div class="conent_txt" style="padding:0px;"> <p class="article_tit yh_txt">水質檢測指標基本概念</p> <p class="source yh_txt"><span>來源：連華環?？萍?/span> <span>作者：admin</span> <span>發布時間：2019-06-26 16:18:10</span> <span>已被瀏覽<font color="#e9000b" id="hits"> 9 </font>次</span></p> <div><span style="color: rgb(51, 51, 51); font-family: "Microsoft Yahei", Arial, sans-serif; font-size: 14px;">1、COD</span> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">化學需氧量COD（Chemical Oxygen Demand）是以化學方法測量水樣中需要被氧化的還原性物質的量。廢水、廢水處理廠出水和受污染的水中，能被強氧化劑氧化的物質（一般為有機物）的氧當量。</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">2、氨氮</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">氨氮是指水中以游離氨（NH3）和銨離子（NH4+）形式存在的氮。水中氨氮含量增高時指以氨或銨離子形式存在的化合氮。氨氮是水體中的營養素，可導致水富營養化現象產生，是水體中的主要耗氧污染物，對魚類及某些水生生物有毒害。</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">3、總磷</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">是水樣經消解后將各種形態的磷轉變成正磷酸鹽后測定的結果，以每升水樣含磷毫克數計量。根據GB/T10647 飼料工業術語總磷（total phosphorus；TP）飼料中以無機態和有機態存在的磷的總和。</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">4、總氮（TN）</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">總氮，簡稱為TN，水中的總氮含量是衡量水質的重要指標之一?？偟亩x是水中各種形態無機和有機氮的總量。包括NO3-、NO2-和NH4+等無機氮和蛋白質、氨基酸和有機胺等有機氮，以每升水含氮毫克數計算。常被用來表示水體受營養物質污染的程度。</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">5、SS</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">懸浮固體, Suspended Solid或者Suspended Substance的縮寫,即水質中的懸浮物.水質中懸浮物指水樣通過孔徑為0.45μm的濾膜截留在濾膜上并于103～105℃ 烘干至恒重的固體物質,是衡量水體水質污染程度的重要指標之一</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">6、BOD</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);">生化需氧量或生化耗氧量(一般指五日生化學需氧量)，表示水中有機物等需氧污染物質含量的一個綜合指標。說明水中有機物由于微生物的生化作用進行氧化分解，使之無機化或氣體化時所消耗水中溶解氧的總數量。</p> <p style="box-sizing: border-box; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 14px; line-height: 28px; font-family: "Microsoft Yahei", Arial, sans-serif; margin: 0px 0px 10px; padding: 0px; color: rgb(51, 51, 51);"><img alt="水質檢測指標基本概念" img_height="356" img_width="649" inline="0" src="http://p1.pstatp.com/large/56790003f07bb079f355" style="box-sizing: border-box; font: inherit; border: 0px; 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