摘要
叙述了石墨炉原子吸收法测定化探样品中银与镉 ,并对有关问题进行探讨。以HF HNO3 HClO4 H2 SO4 分解样品 ,在 2 0 %HCl介质中测定银和镉。它们的测定下限分别为 0 0 0 82 (Ag)与 0 0 0 5 2 (Cd) μg/g。对含银与镉分别为 0 60与0 2 0 μg/g样品 ,其相对标准偏差分别为 4 4与 2 9%。
In this paper,a method for the determination of silver and cadmium in geochemica l samples by GFAAS was described and some problems concerned with the determin ation were discussed. The sample was dissolved with HF HNO 3 HClO 4 H 2SO 4. Silver and cadmium were determined in the me dium of 20% HCl. The low limits of determination of silver and cadmium were 0.00 82 μg/g and 0.0052μg/g respectively. For 0.60 μg/g of silver and 0.20μg/g of cadmium, Relative standard deviation was 4.4% and 2.9% respectively.
出处
《冶金分析》
CAS
CSCD
北大核心
2001年第6期61-63,共3页
Metallurgical Analysis
