摘要
研究提出了用磷酸钕（NdPO4）作为共沉淀捕集剂分离富集环境水样中的痕量Pb^2＋，用火焰原子吸收光谱（FAAS）测定的方法。共沉淀受pH、NdCl3和H3PO4溶液用量的影响。结果显示，在溶液pH为3．2时，20mL水样中加入5mg／L NdCl32mL、05mol／L H3PO4 3mL条件下．铅的加标回收率为96．6％～104．2％，方法的检测限为5．7×10^-3mg／L，水体中常见碱金属、碱土金属离子及阴离子在一定范围内不影响测定。
The use of neodymium phosphate as collector, for the separation ano enricnment of trace lead （Ⅱ）in natural water was studied. The method depended on the pH of sample solution, the concentration of NdCl3 and H3 PO4, and trace lead was determined by flame atomic absorption spectrometry. It was found that Pb^2＋ could be coprecipitated quantitively at pH 3.2, and the determination limit was 5.7×10^-3 mg/L and the recoveries obtained by standard addition method were in the range from 96.6%to 104.2%. The method has overcome the interference of matrix and proved to be satisfactory.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2006年第4期305-307,共3页
Environmental Pollution & Control
基金
科技部小城镇环境保护关键技术研究与设备开发资助项目(No.2003BA808A17)
关键词
铅
磷酸钕
分离富集
共沉淀
火焰原子吸收光谱法
Lead Neodymium phosphate Separation and enrichment Coprecipitation FAAS
