Fatores químicos e físicos que afetam a contaminação por chumbo e cobre em água potável: uma abordagem para o estudo de caso em química analítica

Lead and copper concentrations in drinking water increase considerably on going from municipality reservoirs to the households sampled in Ribeirão Preto (SP-Brazil). Flushing of only 3 liters of water reduced metal concentrations by more than 50%. Relatively small changes in water pH rapidly affecte...

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Published inQuímica Nova Vol. 35; no. 10; pp. 1995 - 2001
Main Authors Tahuana L. B. Grigoletto, Bruno H. C. Fuzari, Adalgisa R. Andrade, Maria Lúcia A. M. Campos, Raquel Fernanda Gerlach, José Eduardo Tanus dos Santos
Format Journal Article
LanguageEnglish
Published Sociedade Brasileira de Química 01.01.2012
Subjects
lead pipes
stripping voltammetry
trace metals
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Summary:Lead and copper concentrations in drinking water increase considerably on going from municipality reservoirs to the households sampled in Ribeirão Preto (SP-Brazil). Flushing of only 3 liters of water reduced metal concentrations by more than 50%. Relatively small changes in water pH rapidly affected corrosion processes in lead pipes, while water hardness appeared to have a long-term effect. This approach aims to encourage University teachers to use its content as a case study in disciplines of Instrumental Analytical Chemistry and consequently increase knowledge about drinking water contamination in locations where no public monitoring of trace metals is in place.
ISSN:1678-7064
DOI:10.1590/S0100-40422012001000020