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Título : Simultaneous determination of Cr, Ni and V in urine by ET AAS
Autor : Hermida, Jeimy
Alvarez, María A.
Palabras clave : simultaneous analysis; ET AAS; metals in urine
Fecha de publicación : 2011
Editorial : Sociedade Brasileira de Química, http://quimicanova.sbq.org.br/index.php
Citación : Química Nova, 2011 (34) 940-944
Resumen : SIMULTANEOUS DETERMINATION OF Cr, Ni AND V IN URINE BY ET AAS. A procedure for the simultaneous determination of Cr, Ni, and V in urine by electrothermal atomic absorption spectrometry (ET AAS) was optimized by factorial design, and performed at a pyrolysis and atomization temperatures of 1300 and 2500 ºC, respectively, using 15 μg de Mg(NO3)2 as chemical modifier. Characteristics mass of 14, 6 and 220 rg and detection limits of the method of 0.07, 0.38 and 0.75 µg L-1 were obtained for Cr, Ni and V respectively. The methodology was validated using a Liphochek Urine Metals Control sample (Bio-Rad) (P=0.05). The methodology was applied to samples of voluntary Venezuelan people, not environmentally exposed to specific emissions, and results ranging from < LOD-1.1 and 1.3-3.3 µg L-1 was observed for Cr and V, respectively, and not detectable levels for Ni.
URI : http://saber.ucv.ve/jspui/handle/123456789/4353
ISSN : 0100-4042
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