离子交换分离富集HG-AFS法测定土壤水溶态Se(Ⅳ)和Se(Ⅵ)  

Separation of water soluble selenium(Ⅳ) and selenium(Ⅵ) in soil sample by ion-exchange column and determination by hydride generation-atomic fluorescence-spectrometry

作　　者：吴少尉[1] 池泉[1] 陈文武[1] 黄建兵[1] 汤志勇[1] 金泽祥[1] 

机构地区：[1]中国地质大学材料科学与化学工程学院

出　　处：《分析试验室》2004年第4期16-18,共3页Chinese Journal of Analysis Laboratory

基　　金：国家地质调查局科技项目(DK0003048)

摘　　要：选用D296阴离子交换树脂分离富集土壤水溶态无机硒,研究了分离富集Se(Ⅳ)和Se(Ⅵ)的实验条件。分别用体积分数为0.1%和10%HCl洗脱土壤水溶态Se(Ⅳ)和Se(Ⅵ),然后用HG AFS对其进行测定,Se(Ⅳ)和Se(Ⅵ)的RSD(n=7)分别为4 3%和1.4%,检出限分别为0.22μg L和0.13μg L。Water soluble inorganic selenium in soil samples was separated and concentrated with D296 anionic exchange resin. The experimental conditions for separation, concentration and elution of selenium(Ⅳ) and selenium(Ⅵ) were investigated. Selenium(Ⅳ) and selenium(Ⅵ) in soil samples were eluted through ion-exchange column with 0.1% and 10% HCl respectively, then were determined by HG-AFS. The detection limit of selenium(Ⅳ) and selenium(Ⅵ) were 0.22 μg/L and 0.13 μg/L, and relative standard deviaton were 4.3% and 1.4%( n =7), respectively.

关 键 词：HG-AFS法 土壤 SE 微量元素 洗脱剂 离子交换法 

分 类 号：X131.3[环境科学与工程—环境科学] X132