摘要
本文研究了一种焙烧富集分离、氢化物－原子荧光法测定地质物料中痕量Ｓｅ的方法。系统地研究了Ｓｅ富集分离条件、考查了３０多种元素在焙烧前后对测定Ｓｅ的影响，在选定的最佳实验条件下，方法检出下限为０．０１μｇ／ｇ，线性范围为０．００１～０．３μｇ／ｍＬ。样品中Ｓｅ含量水平为０．０３６μｇ／ｇ和０．０８９μｇ／ｇ时的测量精度（ＲＳＤ）分别为１０％和５．８％。加标回收率为９７～９９％。采用本方法分析了２６个地球化学标准参考样中痕量硒，获得满意结果。
method was developed for the determination oftrace Se by hydride generation-atomic fluorescencespectrometry with a special hollow-cathode lamp asthe exciting source after separation and concentratonusing baking process.The separation and concentra-tion conditions,instrumental working parameters,ex-perimental conditions and the interference of morethan 30 elements were studied.Under the optimumconditions selected,the detection limit is 0. 01μg/g,dynamic linear range is 0. 001～0.3μg/mL. The rela-tive standard deviations are 10%and5.8%,when thelevels of Se in samples are 0.036μg/g and 0. 089μg/g,respectively. The recovery of known samples is 97%～99%. This method has been applied to analyze 26geochemical standard reference samples (GSR1～6,GSS1～8,GSD1～12),nd a fairly good agreement isobtained.
出处
《分析试验室》
CAS
CSCD
北大核心
1994年第4期65-67,共3页
Chinese Journal of Analysis Laboratory
关键词
焙烧法
原子荧光
地质物料
硒
Hydride generation
atomic fluores-cence,geological materials,selenium preconcentrationand determination
