甲基异丁基酮负载泡塑富集-原子吸收测定岩矿中痕量金银铊镉  

Determination of Trace of Gold, Silver,Thallium and Cadmium by AAS after Concentration with MIBK Loaded Polyurethane Foam

作　　者：陈金武[1] 曾法刚[1] 沈慧君[1] 

机构地区：[1]地质矿产部岩矿测试技术研究所,北京100037

出　　处：《岩矿测试》1993年第2期85-88,共4页Rock and Mineral Analysis

基　　金：地质行业科技攻关专项(国家重点黄金科技攻关)基金资助;90051-(10-2).

摘　　要：研究了多种负载泡塑对Au、Ag、Ti、Cd的富集行为。提出了在HCI-KI-抗坏血酸介质中用甲基异丁基酮(MIBK)负载泡塑同时萃取,然后用2％硫脲-1％HCl解脱的富集方法,并采用火焰原子吸收连续测定地质样品中痕量Au、Ag、Tl和Cd,方法的测定下限(μg/g)分别为:0.2g、0.05、0.20和0.04。The behaviour of concentration of Au,Ag,Tl and Cd with MIBK loaded polyurethane foam was studied. Au,Ag,Tl and Cd were preconcentrated and separated from 10% HCl-KI-ascorbic acid solution with 0. 2g MIBK loaded foam and eluted by 1% HCl-2% thiourea. Then the above elements were determined continually insame aliquot by flam-AAS- The method is simple and rapid and is applicable to the analysis of geological samples for Au,Ag, T1 and Cd contents (μg/g level)greater than 0. 20,0. 05,0. 20 and 0. 04 respectively.

关 键 词：岩矿 金 银 铊 甲基异丁基酮 

分 类 号：P575.3[天文地球—矿物学]