Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/73025
Type: Artigo de periódico
Title: USE OF THE COMPOSITE CELLULOSE-ZIRCONIUM(IV) OXIDE IN A CHROMIUM(VI) PRECONCENTRATION IN-LINE IN A FLOW-INJECTION ANALYSIS SYSTEM
Author: DASILVA, LRD
RODRIGUES, UP
PEIXOTO, CRM
GUSHIKEM, Y
Abstract: Determination of Cr(VI) using the composite cellulose-zirconium(IV) oxide with 5% w/w of zirconium was possible, A flow injection system in line with a minicolumn with the material was used to selectively adsorb Cr(VI). By injecting a standard solution of Cr(VI) 50 mu g dm(-3), pH 1, at different loading times (10, 40, 70 and 100 seconds), a linear correlation between absorbance and mass of Cr(VI) was obtained, Samples with Cr(VI) between 2 and 50 mu g dm(-3) were analyzed. The relative standard deviations were found within 1.87 and 6.88%. Analysis of Cr(VI) in presence of interferent ions, Cr(III), Cu(II), Mn(II), Hg(II), Fe(III), VO3-, MoO42-, SO42-, PO43- and MnO4-, were also studied.
Subject: CHROMIUM(VI) DETERMINATION
CHEMICALLY MODIFIED CELLULOSE
ZIRCONIUM OXIDE
FLOW INJECTION ANALYSIS
Country: Brasil
Editor: Soc Brasileira Quimica
Rights: aberto
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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