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Type: Artigo de periódico
Title: A simple voltammetric procedure for speciation and evaluation of As removal from water
Author: Pereira, MDS
Winter, E
Guimaraes, JR
Rath, S
Fostier, AH
Abstract: Here, we show a fast and sensitive method for the determination of inorganic arsenic in natural waters using differential pulse cathodic stripping voltammetry. All the arsenite determinations were done in 2.0 mol L-1 HCl + 3.15 x 10(-4) mol L-1 Cu(II) supporting electrolyte. 1 x 10(-3) mol L-1 sodium thiosulphate was used as As(V) reducing agent. The detection limit was 0.5 mu g L-1 for both species. The method has been applied to water samples collected in an arsenic-contaminated region of Brazil, in particular, to verify the efficiency of the solar oxidation and removal of arsenic process applied to these waters.
Subject: arsenic
Country: Alemanha
Editor: Springer Heidelberg
Rights: fechado
Identifier DOI: 10.1007/s10311-007-0094-1
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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