吡咯烷二硫代氨基甲酸铵及其氧化产物共沉淀分离富集氯化物中的痕量铅及原子吸收光谱测定  

Ammonium Pyrrolidin-1-yldithioformate and Its Oxidation Product as a Coprecipitator for the Preconcentration of Trace Lead in Chloride and Determination by Atomic Absorption Spectrometry

作　　者：苏耀东[1] 肖红玺[1] 王玉科[1] 程祥圣[2] 

机构地区：[1]同济大学化学系,上海200092 [2]国家海洋局东海监测中心,上海200137

出　　处：《分析化学》2003年第8期969-971,共3页Chinese Journal of Analytical Chemistry

摘　　要：研究了吡咯烷二硫代氨基甲酸铵 (APDC)及其氧化产物 (DPTD)在pH 3.5条件下定量共沉淀氯化物中的痕量铅 ,用FAAS测定 ,检出限可达 1.2× 10 - 2 mg/L。标准加入的回收率在 97.2 %～ 10 6 .2 %之间 ,克服了基体干扰 ,取得了较为满意的结果。Trace lead in metal chloride was quantitatively coprecipitated by ammonium pyrrolidin-1-yldithioformate (APDC) and its oxidation product (DPTD), at pH 3.5, and determined. by flame atomic absorption spectrometry. The detection limit is 1.2 x 10(-2) mg/L and the standard addition recoveries are between 97.2% similar to 106.2%. The effect of matrix can be overcome by this method and the results are satisfying.

关 键 词：吡咯烷二硫代氨基甲酸铵 氧化产物 共沉淀 分离富集 氯化物 痕量铅 火焰原子吸收光谱 测定 

分 类 号：O657.31[理学—分析化学]