默克公司COD测试剂的替代品开发  

Development of Substitute for COD Agent Made by MERCK

作　　者：杨卫华[1] 武强[1] 李树文[2] 孟文芳[2] 

机构地区：[1]中国矿业大学(北京校区)资源与安全工程学院,北京100083 [2]河北工程学院城市建设系,河北邯郸056038

出　　处：《化工环保》2005年第4期327-329,共3页Environmental Protection of Chemical Industry

基　　金：河北省科学技术研究与发展项目(03220702)

摘　　要：德国默克(MERCK)公司制造的COD测定仪在我国环保行业、科研院所的水质监测工作中应用广泛,但配套测试剂价格昂贵,限制了该仪器的使用.设计了高量程(100～1 500 mg/L)和低量程(25～100 mg/L)下COD测试剂替代品的开发方案.通过实验,确定了两个量程下COD测试剂替代品中K2Cr2O7,H2SO4-Ag2SO4,HgSO4的浓度和加入量以及测试方法.实验结果表明,在高量程和低量程范围内,使用COD测试剂替代品的测试结果与MERCK公司配套测试剂的测试结果比较相符,反应时间也可缩短至0.5 h.The COD testing instrument manufactured by MERCK in Germany are used widely for water quality monitoring in many environmental protection industries and research institutes of China. But the high price of the agent kits limits its usage. The development schemes of COD agent substitute were designed for high measuring range （100-1 500 mg/L ） and low measuring range （25-100 mg/L）. Through the experiments, the concentration, dosage and methods for testing K2Cr2O7, H2SO4 -Ag2SO4 and HgSO4 in the substitute are established. The experiment results show that the measurement results obtained by using the substitute agent are consistent with those obtained by using MERCK＇s agent kits, and the reaction time can be shortened to half an hour.

关 键 词：化学需氧量 测试剂 替代品 水质监测 重铬酸钾 

分 类 号：X132[环境科学与工程—环境科学]