连续流动化学发光法测定地质样品中的银  

Determination of Ag in Geological Samples by Continuous Flow Analysis with Chemiluminescence Detection

作　　者：田玉平[1] 陈淑桂[1] 王洪艳[1] 李俊峰[1] 王春芬[1] 

机构地区：[1]吉林大学朝阳校区化学系,吉林长春130026

出　　处：《岩矿测试》2003年第2期117-120,共4页Rock and Mineral Analysis

基　　金：国土资源部地质大调查项目 (No .2 0 0 0 2 0 1 90 1 1 5 )

摘　　要：采用 732阳离子交换树脂静态吸附分离 ,以Luminol K2 S2 O8 Ag+ 乙二胺体系 ,连续流动化学发光法测定地质样品中的痕量银。该方法的检出限为 4μg/L ,9次测定 8.8μg/gAg的标样 0 7 GRD 35 , x =8.5 μg/g ,RSD为 2 .5 %,经地质标样测定 ,验证结果的相对误差小于1 5 %。A method for the determination of trace Ag(Ⅰ) in geological samples has been established based on the flow injection chemiluminescence analysis. Ag was pre concentrated by static absorption with 732 cation exchange resin and determined in Luminol K 2 S 2 O 8 entylenediamina chemiluminescence system with detection limit of 4 μg/L. The method has been applied to the determination of Ag in standard reference material with relative error of <15% and precision of 2.5% RSD ( n =9).The method is suitable for the rapid determination of trace Ag (Ⅰ) in the field.

关 键 词：连续流动化学发光法 地质样品 银 732阳离子交换树脂 静态吸附 分离 检出限 野外现场分析 

分 类 号：P575.4[天文地球—矿物学] O614.122[天文地球—地质学]