流动注射在线萃取-火焰原子吸收光谱法测定地质试样中痕量银  

Determination of Trace Silver in Geological Samples by Flow Injection On-line Extraction-Flame Atomic Absorption Spectrometry

作　　者：汤志勇[1] 金泽祥[1] 陆琴 田凤英 

机构地区：[1]中国地质大学应用化学系,武汉430074

出　　处：《岩矿测试》1993年第1期14-16,共3页Rock and Mineral Analysis

摘　　要：研究了在线萃取系统流程中最佳参数,提出一个流动注射在线萃取-火焰原子吸收光谱法测定地质试样中痕量Ag的分析方法。检出限为0.54ng/ml,对于含Ag 20ng/ml试样测定10次,精密度(RSD)为1.64％,分析速度可达20～30N/h,经地质标样分析验证结果可靠。The optimum parameters of the flow injection on-line extraction system were investigated. The detection limit and relative standard deviation of the method were 0. 54 ng/ml and 1. 64%(20ng/ml Ag,n= 10)respectively. 20~30 samples aliquots can be analyzed in an hour. The method has been applied to the determination of trace Ag in geological samples with satisfactory results.

关 键 词：地质采样 银 流动注射 光谱法 

分 类 号：P575.4[天文地球—矿物学]