EFFECTIVENESS OF PALLADIUM MATRIX MODIFICATION FOR THE DETERMINATION OF THALLIUM BY GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY

被引：12
|
作者：
QING, Y [1 ]
SMEYERSVERBEKE, J [1 ]
机构：
[1] VRIJE UNIV BRUSSELS,INST FARM,PHARMACEUT & BIOMED ANALYSES LAB,LAARBEEKLAAN 103,B-1090 BRUSSELS,BELGIUM
来源：
CLINICA CHIMICA ACTA | 1991年 / 204卷 / 1-3期
关键词：
THALLIUM DETERMINATION; PALLADIUM CHEMICAL MODIFICATION; GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY; SODIUM CHLORIDE INTERFERENCE; URINE; BLOOD ANALYSIS;
D O I：
10.1016/0009-8981(91)90213-V
中图分类号：
R446 [实验室诊断]; R-33 [实验医学、医学实验];
学科分类号：
1001 ;
摘要：
The effect of palladium matrix modification on the determination of thallium has been investigated. The effect of palladium combined either with ammonium nitrate or with magnesium nitrate on the sodium chloride interference was systematically studied and was compared with that of the classical sulfuric acid modifier. A combination of 6-mu-g palladium with 100-mu-g ammonium nitrate allows the direct determination of thallium in ten-fold diluted blood against matrix-free standards. The detection limit (3-sigma) in the undiluted blood was calculated to be 25-mu-g.l-1. For the urine analysis the standard addition technique is recommended because a complete thallium recovery for all different urine samples studied was not always obtained.
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页码：23 / 35
页数：13
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