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Titolo:
Selenium determination in urine with atomic fluorescence detection
Autore:
Sabe, R; Rubio, R; Garcia-Beltran, L;
Indirizzi:
Univ Barcelona, Dept Quim Analit, E-08028 Barcelona, Spain Univ BarcelonaBarcelona Spain E-08028 Analit, E-08028 Barcelona, Spain Hosp Gen Univ Vall dHebron, Serv Bioquim, E-08035 Barcelona, Spain Hosp Gen Univ Vall dHebron Barcelona Spain E-08035 8035 Barcelona, Spain
Titolo Testata:
ANALYTICA CHIMICA ACTA
fascicolo: 2, volume: 436, anno: 2001,
pagine: 215 - 221
SICI:
0003-2670(20010612)436:2<215:SDIUWA>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLASMA-MASS SPECTROMETRY; ABSORPTION SPECTROMETRY; BIOLOGICAL SAMPLES; TRACE-ELEMENTS; WET DIGESTION; SERUM; SPECTROSCOPY; SE;
Keywords:
selenium; urine; atomic fluorescence spectrometry; focused microwaves;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Rubio, R Univ Barcelona, Dept Quim Analit, Marti & Franques 1-11, E-08028 Barcelona, Spain Univ Barcelona Marti & Franques 1-11 Barcelona Spain E-08028 ain
Citazione:
R. Sabe et al., "Selenium determination in urine with atomic fluorescence detection", ANALYT CHIM, 436(2), 2001, pp. 215-221

Abstract

The aim of this study was to determine the Se concentration in urine samples under routine clinical laboratory conditions. The sample was completely mineralised using a focused microwave oven with a mixture of nitric acid and sulphuric acid for 14 min. Se was measured by using hydride generation-atomic fluorescence spectrometry (HG-AFS). Complete recovery was achieved forSeCys, SeMet and TMeSe species. The method was validated by analysing the standard reference material SRM 2670 urine (normal and elevated levels), and by regular participation in Interlaboratory Exercises. Detection limit and precision in terms of reproducibility and repeatability were established. A study of the stability of digested samples and pre-reduced solutions over time was performed to propose the optimised method for routine analysis. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 02/04/20 alle ore 19:15:43