Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/65885
Type: Artigo de periódico
Title: Evaluation of preconcentration methods for the determination of trace amounts of rare earth elements by x-ray fluorescence analysis using a conventional x-ray tube system and a synchrotron radiation source
Author: De Vito, I
Perez, CA
Bueno, MIMS
Olsina, R
Masi, A
Abstract: Trace amounts of rare earth elements (REE) were preconcentrated by chemofiltration methods using the organic reagents o-(3,6-disulfo-2-hydroxy-1-naphthylazo)benzenearsonic acid (Thorin) and 2,2 '-(1,8-dihydroxy-3,6-disulfonaphthylene-2,7-bisazo)bisbenzenearsonic acid (Arsenazo III) as complexing agents for the REE. The resulting specimens (thin film) were then analyzed by an x-ray fluorescence method using two different instruments: a conventional x-ray tube system and a synchrotron radiation source. The results from these two systems were compared with respect to radiation damage, accuracy, detection limits and ease of analysis. Copyright (C) 2001 John Wiley & Sons, Ltd.
Country: Inglaterra
Editor: John Wiley & Sons Ltd
Rights: fechado
Identifier DOI: 10.1002/xrs.503
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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