摘要
本文采用吡咯烷二硫代氨基甲酸铵(APDC)-CO(Ⅲ)共沉淀富集水样中铜、铅、镉,并结合使用加压超滤的方法,同时试验了pH沉淀剂以及共存离子等对测定的影响.实验结果表明,此法具有富集倍数大、分离基体效果好等优点,精密度、准确度均令人满意.
The precipitate formed by adding ammonium pyrrolidine dithiocarbamate (APDC) to Co(Ⅲ) solutions has been reported. It is well suited for preconcen-trating trace metals-Cu, Pb, Cd by coprecipitation with high-pressure filtration. The effects of pH precipitate and ionic strength to the atomic absorption analysis are studied. Results of the experiments show high coprecipitation efficiencies. Satisfactory precision and isolation of trace metals are advantages of the procedure.
出处
《上海大学学报（自然科学版）》
CAS
CSCD
1998年第4期406-410,共5页
Journal of Shanghai University:Natural Science Edition
关键词
原子吸收
共沉淀富集
痕量金属
饮用水
铜
铅
atomic absorption
method of preconcentration by coprecipitation
trace metal
