用钒作为基体改进剂对矿石中痕量镓、铟、铊的无火焰原子吸收测定  

Determination of Traces of Ga,In,Tl in Geological Samples by Flameless AAS Using Matrix Modifier

作　　者：秦忠骏 吴增淑 杨胜初 李其晃 Qin Zhong-jun

机构地区：[1]中国地质科学院岩矿测试技术研究所

出　　处：《岩矿测试》1985年第2期160-162,I0010,共4页Rock and Mineral Analysis

摘　　要：近年来,随着原子吸收分析技术的发展,关于镓、铟、铊的测定已有不少报导,但在矿石样品中,在一次取样的条件下,连续测定这三个元素的方法还很少见。本文是将样品先经分解后,在5.5N的氢溴酸介质中利用乙酸丁酯进行萃取然后将有机试剂破坏后在2%硝酸介质中。The sample solution in 5.5 N-HBr medium was extracted by n-butyl acetate,using vanadium in 2N-HNO_(3) medium as matrix modifier Ga,In and T1 could be measured less than O.OX ppm.The absolute sensitivity obtained for Ga,In and T1were 5·10^(-12),9·10^(-12)and 9·10^(-12)respectively,The RSD of samples containing 0.1>μg/ml of Ga,0.02μg/ml of In and T1 are 1.33%,1.52%and 1.47%respectively(n=11).

关 键 词：原子吸收分析 基体改进剂 硝酸介质 有机试剂 乙酸丁酯 连续测定 矿石样品 氢溴酸 

分 类 号：O65[理学—分析化学]