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Type: Artigo de periódico
Title: Energy dispersive X-ray fluorescence spectrometric determination of lead after liquid-solid extraction with 1-(2-pyridylazo)-2-naphthol immobilized on silica.
Author: Ponce, LC
Zamora, PP
Bueno, MIMS
Abstract: 1-(2-Pyridylazo)-2-naphthol (PAN) immobilized on silica has been used to preconcentrate lead (II) in aqueous samples for its determination using Energy Dispersive X-Ray Fluorescence Spectrometry, The optimal conditions for quantitative extraction, viz,, pH, stirring time and aqueous phase volume, were systematically evaluated. The procedure yields reliable results for lead determination in aqueous samples of environmental importance.
Subject: lead
liquid-solid preconcentration
adsorption on modified silica
energy dispersive X-ray fluorescence spectrometry
Country: Brasil
Editor: Soc Brasileira Quimica
Citation: Quimica Nova. Soc Brasileira Quimica, v. 19, n. 1, n. 30, n. 32, 1996.
Rights: aberto
Date Issue: 1996
Appears in Collections:Unicamp - Artigos e Outros Documentos

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