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.
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页码：393 / 398
页数：6
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