聚乙烯-双硫腙复膜树脂分离富集/原子吸收法测定地质样品中的痕量金  

Determination of Gold in Ore by Atomic Absorption Spectrometry after Separation and Concentration with Polyethylene-Dithizone Double Membranes Resin

作　　者：江放明[1] 周方钦[1] 徐洁昕[1] 白祖海[1] 

机构地区：[1]湖南湘潭大学化学学院,湖南湘潭411105

出　　处：《分析科学学报》2006年第1期34-36,共3页Journal of Analytical Science

基　　金：湖南省教育厅自然科学基金(No.02C576)

摘　　要：研究了聚乙烯双硫腙复膜树脂的合成及其分离富集痕量全的条件。于pH为2．0的HCl介质中，金离子被定量吸附在聚乙烯双硫腙复膜树脂上，并可用59／6硫脲-0．1mol／LHCl溶液洗脱，洗脱液用火焰原子吸收光谱法测定，金的回收率在91．5％～99.7%之间。本法可用于地质样品中痕量金的分离富集与测定。The conditions for synthesis of PE（polyethylene）-Dithizone double membranes resin and for separation and preconcentration of trace gold in geological samples have been studied. The experiment results showed that gold was enriched on the PE-Dithizone double membrances resin column in pH 2.0 hydrochloric acid media and was eluted using 5% sulfourea and 0. 1 mol/L hydrochloric acid as the eluent. Gold in the elution was then determined by atomic absorption spectrometry. The developed method was applied to the analysis of gold in geological samples with recovery of 91.5%-99.7%.

关 键 词：聚乙烯 双硫腙 分离富集 原子吸收光谱法 金 

分 类 号：O657.31[理学—分析化学]