摘要
本文应用探针恒温原子化技术 ,系统研究了铬的分析性能 ,应用固体悬浮进样 ,直接测定了地质样品中的痕量铬 ,方法的 RSD为 3.0 %～ 6 .5 % ,检测限为 5 .1× 10 - 1 2 g铬 。
A method of loading a slurry prepared from a sol id sample for analysis of chromium in geological samples using graphite furnace atomic absorption spectrometry had been approached by combining slurry sampling with probe atomization.The factors that influence the performances of chromium i ncluding ashing and atomization temperature,atomization surfaces were investigat ed.The results showed that the determination of chromium in geological samples c ould be performed by direct slurry sampling with the use of a calibration establ ished with aqueous standards.The relative standard deviations(RSD) of the method were 3.0%—6.5%.The detection limit was 5.1×10- -12 g Cr.The Analy tical results of the geological reference samples were consistent with the certi fied values.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2000年第3期364-367,共4页
Spectroscopy and Spectral Analysis
基金
国土资源部"九五"重点科技项目!(95 0 5 6 16 -3.4)基金资助课题
关键词
铬
悬浮液进样
石墨炉原子吸收法
地质样品
Chromium, Probe atomization, Slurry sampling, Graphite furnace atomic absorption spectrometry
