【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。更多还原

【Abstract】 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 1.2×10 -2 mg/L and the standard addition recoveries are between 97.2%～106.2%. The effect of matrix can be overcome by this method and the results are satisfying.更多还原