摘要
研究了吡咯烷二硫代氨基甲酸铵 (APDC)及其氧化产物 (DPTD)体系在 pH3.5条件下定量共沉淀氯化物中痕量镉 ,用FAAS测定 ,检出限可达 1.3× 10 - 3mg·L- 1。加标回收率在 97%～ 10 3%之间 ,克服了基体干扰 ,取得了较满意的结果。
Micro amounts of cadmium was preconcentrated and separated from the chlorides of alkali and alkali earth elements by co-precipitation with APDC and its oxidation product DPTD in a solution of pH 3.5. The precipitate was dissolved in nitric acid and cadmium determined by FAAS. The interferences of the matrix elements were thus eliminated. The detection limit of the method was found to be 1.3×10 -3mg·L -1, and the recoveries found by the standard additon method were in the range of 97% to 103%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2003年第1期18-19,25,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
国家海洋局东海分局海洋科学基金资助项目 ( 0 4)
