DDTC-TX-100胶束增溶直接光度法测定水中低含量铜  

Determination of Trace Copper by Direct Spectrophotometry with DDTC and TX 100

作　　者：乔守良 刘瑛 赵钦勋 

机构地区：[1]胶州市环境监测站

出　　处：《环境监测管理与技术》1999年第4期35-36,共2页The Administration and Technique of Environmental Monitoring

摘　　要：ＴｒｉｔｏｎＸ１００对ＤＤＴＣ（二乙基二硫代氨基甲酸钠）与铜反应生成的络合物Ｃｕ（ＤＤＴＣ）２有增溶增敏作用，建立了低含量铜直接光度测定法。操作简便快速，选择性、精密度和回收率均较好，相对标准偏差为０８％～４３％，回收率为９６％～１０６％。TritonX 100 increased the solubility and sensitivity of complex Cu(DDTC) 2 of copper and DDTC(sodium diethylsulfuraminoformic acid). The determination method of direct spectrophotometry for trace copper was established. The method was simple and fast, and the selectivity, precision and recovery were good. The standard derivation was 0 8%～4 3%, recovery was 96%～106%, mole absorption coefficient was 6 4×10 3 L/(mol·cm).

关 键 词：DDTC 铜 直接光度法 水质监测 

分 类 号：X832[环境科学与工程—环境工程] X520.2