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Systematic study of chromium determination in urine by graphite furnace atomic absorption spectrometry

✍ Scribed by R. Rubio; A. Sahuquillo; G. Rauret; L. Garcia Beltran; Ph. Quevauviller

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
500 KB
Volume
283
Category
Article
ISSN
0003-2670

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✦ Synopsis

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 pg 1-l) 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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