摘要
本文在氢化物原子吸收法中使用了防爆鸣试剂碳酸氢钠溶液,解决了由于无载气时氢化物发生系统中存在空气而引起回火爆鸣的问题,完成化探样品中砷、锑、铋的测定。测定砷、锑、铋的灵敏度(1％吸收)依次为1.17ng,0.58ng,1.76ng。其相应的检出限依次为6.83ng,5.3ng,14.3ng。在拟定的条件下测定0.1μAs,0.05μg Sb,0.1μg Bi各10次以上。其信号的相对标准偏差(％)分别为3.14,5.33,7.14。
A new hydride generation AAS method for the determination of arsenic, antimony and bismuth in geochemical samples was devised, in which the use of a carrier gas was obviated. Sodium bicarbonate was added before the generation of hydrides to prevent explosion. The detection limits were 6.83 ng As, 5.3 ng Sb and 14.3 ng Bi respectively.
出处
《岩矿测试》
CAS
CSCD
北大核心
1989年第3期217-219,共3页
Rock and Mineral Analysis
