Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/8237
Title: Arsenic in the groundwater of Ouro Preto (Brazil) : its temporal behavior as influenced by the hydric regime and hydrogeology.
Authors: Gonçalves, José Augusto Costa
Lena, Jorge Carvalho de
Paiva, José Fernando de
Nalini Júnior, Hermínio Arias
Pereira, Janice Cardoso
Keywords: Arsenic
Groundwater
Iron quadrangle
Brazil
Issue Date: 2007
Citation: GONÇALVES, J. A. C. et al. Arsenic in the groundwater of Ouro Preto (Brazil): its temporal behavior as influenced by the hydric regime and hydrogeology. Environmental Geology, v. 53, p. 785-793, 2007. Disponível em: <https://link.springer.com/article/10.1007/s00254-007-0691-0>. Acesso em: 20 de jun. 2017.
Abstract: In the city of Ouro Preto (MG), water catchment for public supply originates from superficial drainage, springs, old abandoned mines and some driven wells. In the rocks of the region, As is originally found in gold-enriched sulphide-bearing mineral deposits. The weathering process introduces As into the hydrological system by dissolution of this element into the leachate. Measurement of the As content in the groundwater of some catchments was carried out during 1 year and these measurements demonstrated high As content—up to 224 lg L–1 of As(V)—during the rainy season (the maximum concentration limit according to World Health Organization is 10 lg L–1). Lower values were observed during the dry season and in some sampling stations, As was not even detected. The As concentration variability during 1 year shows a strict and direct relationship to seasonal and hydrological conditions. For city authorities, responsible for public water supply, it is necessary to perform a complete inventory of the water sources used and constantly monitor the As content in the water.
URI: http://www.repositorio.ufop.br/handle/123456789/8237
metadata.dc.identifier.uri2: https://link.springer.com/article/10.1007/s00254-007-0691-0
metadata.dc.identifier.doi: https://doi.org/10.1007/s00254-007-0691-0
ISSN: 1432-0495
Appears in Collections:DEGEO - Artigos publicados em periódicos

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