Author(s)

D.M. Bonotto & E.G. de Oliveira

Abstract

Groundwaters and surface waters from an area of treatment of sand for industrial purposes at Analandia municipality, nearly in the center of Sao Paulo State, Brazil, were chemically and isotopically analysed with two aims: to evaluate if the anthropogenic activities that has taken place for the last 6 years is affecting the quality of the hydrological resources and to relate the hydrogeochemical behaviour of the uranium isotopes ^U and ^*U with the pattern of circulation of groundwaters. Introduction The Sao Paulo State in Brazil, due to its

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