Avaliação de metais traços e íons majoritários em águas de chuva na cidade de São Paulo

Autor:	Jairo J. Pedrotti, Adalgiza Fornaro, Anna Paula Godoy Fontenele
Jazyk:	portugalština
Rok vydání:	2009
Předmět:	Cadmium chemistry Environmental chemistry air pollution trace metals FIA-stripping detection chemistry.chemical_element Mineralogy General Chemistry Downtown area
Zdroj:	Química Nova, Volume: 32, Issue: 4, Pages: 839-844, Published: 2009 Química Nova v.32 n.4 2009 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ
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:	OpenAIRE
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