Evaluation of trace metals and major ions concentrations in rainwater in downtown sÃO paulo city Avaliação de metais traços e íons majoritários em águas de chuva na cidade de são paulo

Fontenele A.P.G.; Pedrotti J.J.; Fornaro A.

Evaluation of trace metals and major ions concentrations in rainwater in downtown sÃO paulo city Avaliação de metais traços e íons majoritários em águas de chuva na cidade de são paulo

Tipo

Artigo

Data de publicação

2009

Periódico

Quimica Nova

Citações (Scopus)

23

Autores

Fontenele A.P.G.
Pedrotti J.J.
Fornaro A.

Resumo

rainfall samples collected in the downtown area of São Paulo city, during 2003, exhibited average concentrations of cadmium, lead and copper of 1.33, 8.52 and 49.5 nmol L-1, respectively. Among the major ions, NH4+ was the predominant species followed by NO 3-, SO42- and Ca2+, with volume weighed mean (VWM) concentrations of 37.1,20.1, 11.9 and 10.8 μmol L-1, respectively. All the determined species showed high inter-events variability, including free H+ ions whose VWM concentration was 4.03 μmol L-1, corresponding to a pH value of 5.39.