海水中COD_(Mn)检测方法的浓度盐度正交相关性及校正模型研究  

The study of orthogonal correlations and modified model between concentration and salinity about one kind of COD determination method in sea water

作　　者：杨幸幸[1,2] 谭赛章 赵羽[3] 杨颖[1,2] 林熙戎 叶属峰[1,2] 

机构地区：[1]国家海洋局东海环境监测中心,上海200137 [2]海洋赤潮灾害立体监测技术与应用国家海洋局重点实验室,上海200137 [3]北京有色金属研究总院,北京100088

出　　处：《分析试验室》2016年第5期556-559,共4页Chinese Journal of Analysis Laboratory

基　　金：上海市科委科研计划项目(12231203300);赤潮重点实验室项目(MATHAB2014001)资助

摘　　要：将海水中测定化学需氧量(COD_(Mn))的方法—碱性高锰酸钾法进行了系列浓度盐度梯度的正交实验。结果表明,该方法不受盐度影响,氧化效率随着浓度的升高逐渐降低,引入校正模型后,一定程度上降低了由于高锰酸盐氧化体系氧化能力不足带来的数据误差,能更准确地表征水体COD的浓度。An orthogonal experiment about alkaline potassium permanganate method of chemical oxygen demand（ COD（Mn）） between series of salinity and concentration gradients has been studied in this paper. The results show that this method of COD is not affected by salinity,and the oxidation efficiency gradually decreased with the increase of the concentration. As a result, a modified model was introduced to the system of potassium permanganate to decrease the data error,and the corrected data can more accurately represent the concentration of COD in sea water.

关 键 词：化学需氧量 CODMN 正交实验校正模型 

分 类 号：X830.2[环境科学与工程—环境工程]