微波消解法测定水中化学需氧量  

Determination of Chemical Oxygen Demand in Water by Microwave Digestion

作　　者：杜建侠 杨媛媛 荣沙沙 李红 Du Jian-xia;Yang Yuan-yuan;Rong Sha-sha;Li Hong(Hubei Three Gorges Laboratory,Yichang HuBei 443007,China;Hubei Xingrui Silicon Materials Co.,Ltd.,Yichang HuBei 443007,China)

机构地区：[1]湖北三峡实验室,湖北宜昌443007 [2]湖北兴瑞硅材料有限公司,湖北宜昌443007

出　　处：《江西化工》2023年第1期33-35,39,共4页Jiangxi Chemical Industry

摘　　要：本研究采用微波快速消解法对水中化学需氧量进行测定,对比传统重铬酸钾回流法,两者结果保持一致,在误差范围内,且微波消解法在加热1min之后加标回收率结果可达到96%以上。结果表明,微波消解法可大大缩短消解时间,有效提高COD测量效率。The chemical oxygen demand in water was determined by microwave rapid digestion method. Compared with the traditional potassium dichromate reflux method, the results of the two methods were consistent and within the error range.The recovery rate of the microwave digestion method after heating for 1 min could reach more than 96%. The results show that the microwave digestion method can greatly shorten the digestion time and effectively improve the COD measurement efficiency.

关 键 词：微波消解法 化学需氧量(COD) 加标回收率 重铬酸钾回流法 

分 类 号：O657[理学—分析化学] X832[理学—化学]