化学耗氧量测定方法的改进  

Improvement of the Method in Measuring COD

作　　者：张春燕[1] 汪涵[1] 米治宇[1] 张红梅[1] 

机构地区：[1]大庆石油化工总厂,163714

出　　处：《石油化工环境保护》1997年第3期49-51,共3页Environment Protection in Petrochemical Industry

摘　　要：测定化学耗氧量的标准方法重铬酸钾法的主要缺点是：测定时间长；使用汞盐消除C1-的干扰，二次污染严重．提出了改进意见．改进后的方法，测定时间短，并提出了彻底消除Cl-干扰的方法，其精密度和准确度较高．The standard method of measuting COD with K2Cr2O7 has the following disadvantages,long mea-suring time,and the serious second pollution occured. When mercuric salt eliminated the interference of Cl-. This paper introduced its improvement. The improved method can shorten the measuring time and eliminate the interference of Cl-. The new method has high precision and accuracy.

关 键 词：化学需氧量 测定方法 水质监测 水质污染 

分 类 号：X832[环境科学与工程—环境工程] X520.2