十二烷基二甲基苄基氯化铵从碱性氰化液中固相萃取金的研究  

Solid Phase Extraction Gold from Alkaline Cyanide Solution with Benzyl Dimethyl Dodecyl Ammonium Chloride

作　　者：解润芳[1,2] 杨项军[2] 韩云山[3] 李树华[1] 

机构地区：[1]昆明医科大学法医学院,昆明650500 [2]云南大学化学科学与工程学院,昆明650091 [3]云南铜业股份有限公司检验中心,昆明650102

出　　处：《无机化学学报》2014年第3期487-491,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20471051)资助项目

摘　　要：建立了一种用十二烷基二甲基苄基氯化铵(BDMDAC)从碱性氰化液中固相萃取金的新方法:在碱性介质中,十二烷基二甲基苄基氯化铵溶液(BDMDAC)与Au(CN)2-络阴离子生成离子缔合物,该离子缔合物可被反相键合硅胶固相萃取柱萃取、富集,用乙醇洗脱,反相键合硅胶固相萃取柱可重复使用。该方法用于从碱性氰化液中固相萃取痕量金,萃取回收率可超过98%。The benzyl dimethyl dodecyl ammonium chloride （BDMDAC） can react with Au（CN）2- to the ionic complex and the compound can be extracted quantitatively. At the same time, It can be enriched highly by solid phase extraction column of reversed phase bonded silica gel. Therefore, we proposed a new method of extracting gold with high enrichment multiple. What enriched by the solid phase extraction column can be eluted by ethanol and the gold in the eluent can be determinated with spectrophotometry. The solid phase extraction column was not easily damaged and it can repeat using. The method is used to extract trace amounts of gold from alkaline cyanide solution and the recovery rate of gold is higher than 98% under the optimal experimental condition.

关 键 词：固相萃取 十二烷基二甲基苄基氯化铵 碱性氰化液 金 分离 

分 类 号：O611.662[理学—无机化学]