EFFECTIVENESS OF PALLADIUM CHEMICAL MODIFICATION FOR THE DETERMINATION OF CADMIUM BY GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY

被引：21

作者：

SMEYERSVERBEKE, J

QING, Y

PENNINCKX, W

VANDERVOORT, F

机构：

[1] Laboratory of Pharmaceutical and Biomedical Analyses, Farmaceutisch Instituut, Vrije Universiteit Brussel, B-1090 Brussels

[2] Liaoning Institute of Chemical Engineering, Liaoning

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 1990年 / 5卷 / 05期

关键词：

Cadmium determination; Graphite furnace atomic absorption spectrometry; Palladium chemical modification; Sodium chloride interference; Urine; milk and blood analysis;

D O I：

10.1039/ja9900500393

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The effect of palladium on the cadmium absorbance signal was investigated. To reduce the background absorbance due to sodium chloride, large amounts of palladium should be avoided. A combination of 6 μg of palladium and 500 μg of ammonium nitrate allows the direct determination of cadmium in undiluted urine against aqueous standards. The detection limit (3σ) was calculated to be 0.1 μg l-1. This mixed modifier is shown also to be applicable to the analysis of milk and blood with a detection limit of 0.5 μg l-1.

引用

页码：393 / 398

页数：6

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