悬浮液进样GFAAS法测定地质样品中的痕量镉  

Determination of trace cadmium in geosamles by graphite furnace atomic absorption spectrometry with slurry sampling

作　　者：艾军[1] 金泽祥[2] 

机构地区：[1]武汉化工学院化工与制药学院,湖北武汉430074 [2]中国地质大学材料科学与化学工程学院,湖北武汉430074

出　　处：《武汉化工学院学报》2005年第1期1-3,共3页Journal of Wuhan Institute of Chemical Technology

摘　　要：提出了悬浮液进样石墨炉原子吸收(GFAAS)法测定地质样品中痕量镉的分析方法.研究了悬浮液的制备方法以及改进基体改进剂对测定的影响,确定了最佳实验条件.在最佳实验条件下,该方法的检出限为2.1pg/g,测定范围为0～4.0μg·L-1,回收率为95%～99%,精密度(RSD,n=4)为3.03%～5.40%.该方法快速、简便、干扰小,经对国家一级地质标准物质分析,结果满意.A method for the determination of trace cadmium in geosamples by graphite fuenace atomic absorption spectrometry(GFAAS) with slurry sampling has been presented.The influence of GAAS operation conditions,matrix modifiers and slurry stability agents have been studied.The liner range for determination of cadmium was 0~4.0 μg·L^(-1).Experimental condition limit was 2.1 pg·g^(-1),the raletive standard deviation was less than 5.5% (RSD,n=4) and the recovery rate was 95%～99%.The proposed method was rapid,simple and accurate.It has been applied to determine trace cadmium in national standard samples with satisfactory results.

关 键 词：悬浮液进样 石墨炉原子吸收法 地质样品 镉 

分 类 号：O657.31[理学—分析化学]