Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/81137
Type: Artigo de periódico
Title: POTENTIOMETRIC STUDY USING CHEMICALLY-MODIFIED SILICA-GEL WITH PYRIDINIUM AS MEMBRANE FOR CIO4(-) IONS
Author: LORENCETTI, LL
GUSHIKEM, Y
KUBOTA, LT
NETO, GD
FERNANDES, JR
Abstract: A potentiometric sensor for the perchlorate anion was developed by mixing chemically modified silicagel with pyridinium perchlorate, with an epoxy polymer and graphite. The electrode showed Nernstian response between 1.0 x 10(-2) and 1.0 x 10(-3) M perchlorate concentrations. The electrode showed high selectivity to this ion at solutions pH between 5.5 and 8.0. The presence of IO4-, NO3-, Br-, IO3-, Cl- and SO4(2-) ions in the solutions, had only small interference in the electrode response in the range mentioned.
Subject: MODIFIED SILICA GEL
PYRIDINIUM ION
PERCHLORATE ANALYSIS
PERCHLORATE SELECTIVE ELECTRODE
Country: Austria
Editor: Springer-verlag Wien
Rights: fechado
Identifier DOI: 10.1007/BF01244893
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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