Avaliação de metais traços e íons majoritários em águas de chuva na cidade de São Paulo Evaluation of trace metals and major ions concentrations in rainwater in downtown São Paulo city
Autor: | Anna Paula Godoy Fontenele, Jairo J. Pedrotti, Adalgiza Fornaro |
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Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
Rok vydání: | 2009 |
Předmět: | |
Zdroj: | Química Nova, Vol 32, Iss 4, Pp 839-844 (2009) |
Druh dokumentu: | article |
ISSN: | 0100-4042 1678-7064 |
DOI: | 10.1590/S0100-40422009000400003 |
Popis: | 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 NO3-, SO4(2-) 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. |
Databáze: | Directory of Open Access Journals |
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