<form id="wfmjm"><ins id="wfmjm"><ins id="wfmjm"></ins></ins></form><button id="wfmjm"><button id="wfmjm"><ins id="wfmjm"></ins></button></button><ins id="wfmjm"><form id="wfmjm"></form></ins>
<xmp id="wfmjm">
<button id="wfmjm"><button id="wfmjm"></button></button>
<ins id="wfmjm"><form id="wfmjm"><button id="wfmjm"></button></form></ins>
<xmp id="wfmjm">
<xmp id="wfmjm"><form id="wfmjm"></form>
<form id="wfmjm"></form> <xmp id="wfmjm"><form id="wfmjm"></form><xmp id="wfmjm"><form id="wfmjm"><button id="wfmjm"></button></form><xmp id="wfmjm">
<xmp id="wfmjm"><button id="wfmjm"><button id="wfmjm"></button></button><xmp id="wfmjm"><button id="wfmjm"><ins id="wfmjm"></ins></button><form id="wfmjm"><form id="wfmjm"></form></form>
<xmp id="wfmjm"><form id="wfmjm"></form>
<xmp id="wfmjm"><xmp id="wfmjm"><form id="wfmjm"></form><xmp id="wfmjm"><form id="wfmjm"></form><xmp id="wfmjm"><form id="wfmjm"></form><xmp id="wfmjm">
<xmp id="wfmjm"><form id="wfmjm"></form>
<form id="wfmjm"><button id="wfmjm"></button></form>
<form id="wfmjm"></form>
<xmp id="wfmjm"><form id="wfmjm"><form id="wfmjm"></form></form>
<form id="wfmjm"></form>
<xmp id="wfmjm">

13952672605

技術文章

Technical articles

當前位置：首頁技術文章cod測定計算公式

cod測定計算公式

更新時間：2012-04-14點擊次數：18210

       COD測定常用重鉻酸鉀法，即在強酸溶液中, 加入一定量的重鉻酸鉀氧化水中還原性物質，過量的重鉻酸鉀以試亞鐵靈作指示劑，用硫酸亞鐵銨滴定，根據用量算出水中還原性物質消耗氧的量。計算公式如下：
COD（mg/L）= C×（V0 - V1 ）×8×1000/V
式中： C------硫酸亞鐵銨標準溶液的物質的量濃度，mol/L
              V0-----空白滴定時消耗硫酸亞鐵銨標準溶液的體積，ml
              V1-----廢水樣滴定時消耗硫酸亞鐵銨標準溶液的體積，ml
               V------廢水樣的體積，ml

全國服務熱線：

0523-88223052

以品質贏得客戶滿意口碑
掃一掃
添加公司微信

版權所有© 2025 泰州科瑞特分析儀器有限公司 All Rights Reserved  蘇ICP備10098940號-2

技術支持：化工儀器網  管理登錄  sitemap.xml

微信

聯系

13952672605

聯系
頂部
精品无码Ⅴ|在线播放_依依成人影院久久久午夜_日韩精品一区二区三区四区_国产网红主播无码精品
<form id="wfmjm"><ins id="wfmjm"><ins id="wfmjm"></ins></ins></form><button id="wfmjm"><button id="wfmjm"><ins id="wfmjm"></ins></button></button><ins id="wfmjm"><form id="wfmjm"></form></ins>
<xmp id="wfmjm">
<button id="wfmjm"><button id="wfmjm"></button></button>
<ins id="wfmjm"><form id="wfmjm"><button id="wfmjm"></button></form></ins>
<xmp id="wfmjm">
<xmp id="wfmjm"><form id="wfmjm"></form>
<form id="wfmjm"></form> <xmp id="wfmjm"><form id="wfmjm"></form><xmp id="wfmjm"><form id="wfmjm"><button id="wfmjm"></button></form><xmp id="wfmjm">
<xmp id="wfmjm"><button id="wfmjm"><button id="wfmjm"></button></button><xmp id="wfmjm"><button id="wfmjm"><ins id="wfmjm"></ins></button><form id="wfmjm"><form id="wfmjm"></form></form>
<xmp id="wfmjm"><form id="wfmjm"></form>
<xmp id="wfmjm"><xmp id="wfmjm"><form id="wfmjm"></form><xmp id="wfmjm"><form id="wfmjm"></form><xmp id="wfmjm"><form id="wfmjm"></form><xmp id="wfmjm">
<xmp id="wfmjm"><form id="wfmjm"></form>
<form id="wfmjm"><button id="wfmjm"></button></form>
<form id="wfmjm"></form>
<xmp id="wfmjm"><form id="wfmjm"><form id="wfmjm"></form></form>
<form id="wfmjm"></form>
<xmp id="wfmjm">