SYSTEMATIC STUDY OF CHROMIUM DETERMINATION IN URINE BY GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY

被引:18
作者
RUBIO, R
SAHUQUILLO, A
RAURET, G
BELTRAN, LG
QUEVAUVILLER, P
机构
[1] UNIV BARCELONA, HOP GEN VALL HEBRON, SERV BIOQUIM, E-08035 BARCELONA, SPAIN
[2] DIRECTORATE GEN SCI RES & DEV, COMMUNITY BUR REFERENCE, B-1049 BRUSSELS, BELGIUM
关键词
ATOMIC ABSORPTION SPECTROMETRY; CHROMIUM; URINE;
D O I
10.1016/0003-2670(93)85224-8
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The optimized measurement of Cr in urine samples using graphite furnace atomic absorption spectrometry, with a tungsten lamp and Zeeman-effect background correction is described. Sample dilution and slow hot injection were studied in an effort to improve the precision. Parameters such as detection limit (0.08 mug l-1) and precision are reported. Based on this study, the Zeeman effect with slow hot injection of diluted sample is recommended. The method was evaluated by applying the conditions established to a certified reference urine. The method was applied to the determination of chromium in urine from healthy subjects and total parenteral nutrition patients.
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页码:207 / 212
页数:6
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