电解富集光谱法测定样品中的微量金  

SPECTROCHEMICAL DETERMINATION OF TRACEGOLDIN SAMPLES WTH ELECTROLYSIS PRECONCENTRATION

作　　者：冯正光[1] 张辉俊 唐末华 

机构地区：[1]成都理工学院应用化学系

出　　处：《矿物岩石》1994年第2期98-101,共4页Mineralogy and Petrology

摘　　要：本文先以恒电位电解法在ｃ（Ｋｃｌ）＝０．ｌｍ０ｌ／Ｌ，ｃ（Ｈｃｌ）＝０．２ｍｏｌ／Ｌ介质液中，将微量金电解富集在特制石墨电极上，再用背景为内标的原子发射光谱法对金进行测定。本分析方法的回收率为９７．１－１０６％，变动系数为８．５５％，相对误差为－１．９６一２．２１％。操作简便快速。In the medium of C(KCl)=0.1mol/Land C(HCl)20.2 mol/L,trace gold was elec- trOdeposited on a specific graphite electrode under constant potential,then determined by spectro- chemical method with the background as internal standard.Under the optimum conditions,the re- coveries for gold are between 97.1%and l06%,the coefficient of variation is 8.55%,and the relative errors range from-1.96%to 2.21%。 This is a method connecting electrochemical sep- aration and preconcentration with the spectrochemical determination,and it is both rapid,accurate and pratical, effective.

关 键 词：金 样品 金矿床 光谱法 电解富集 

分 类 号：P618.510.8[天文地球—矿床学]