固定零点法在快速消解测定水质中COD的应用  

Application of Fixed Zero Method in Fast Digestion and Determination of COD in Water Quality

作　　者：张科杰 唐光传 褚慧珍 Zhang Kejie;Tang Guangchuan;Chu Huizhen(Testing Center Ningbo Huaqing Environmental Protection Technology Co.,Ltd.,Ningbo 315000,China)

机构地区：[1]宁波华清环保技术有限公司检验中心,浙江宁波315000

出　　处：《广东化工》2021年第20期246-247,共2页Guangdong Chemical Industry

摘　　要：在工业废水COD测定中,采用快速消解法相较于化学回流法有更加的简便,测定效率更高,更加节省成本,产生更少的废液等优点。本文提出用“固定零点”也即固定空白值来代替每批次的空白试验,达到更好、更准确的水质中COD的测定。经多年的实际应用,表明本法有效、准确,满足对化工废水的测定要求。In the determination of COD in industrial wastewater,compared with chemical reflux method,rapid digestion method is more simple,more efficient,more cost-effective and less waste liquid.This article proposes to replace the blank test of each batch with a“fixed zero”,that is,a fixed blank value,to achieve a better and more accurate determination of COD in water quality.Practical applications for many years have shown that this method is effective and accurate,and meets the requirements for the determination of chemical wastewater.

关 键 词：快速消解法 固定零点法 测定 COD 应用 

分 类 号：TQ[化学工程]