Determination of Cr(III) in urine, blood serum and hair using flow injection chemiluminescence analysis |
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| Authors: | R Escobar M S García-Domínguez A Guiraúm and F F de la Rosa |
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| Institution: | (1) Department of Analytical Chemistry, Faculty of Chemistry, University of Sevilla, E-41012 Sevilla, Spain, ES;(2) Department of Biochemistry, Faculty of Biology, University of Sevilla, E-41012 Sevilla, Spain, ES |
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| Abstract: | A flow injection (FI) chemiluminescence method for the determination of Cr(III) in blood serum, urine and hair samples is
reported. It is based on the chromium-catalyzed light emission from the luminol oxidation by hydrogen peroxide. The apparatus
consists of an FI system with a flow cell formed by a coiled transparent tube suitable for chemiluminescence detection. The
specificity of the method is achieved in presence of EDTA. The detection limit under optimum conditions is 0.01 μg L–1 of Cr(III). Precision and accuracy were evaluated by determining Cr(III) concentrations in urine standards from the National
Institute of Standard and Technology (NIST).
Received: 30 June 1997 / Revised: 16 January 1998 / Accepted: 23 January 1998 |
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