Journal
QUIMICA NOVA
Volume 32, Issue 4, Pages 839-844Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0100-40422009000400003
Keywords
air pollution; trace metals; FIA-stripping detection
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Rainfall samples collected in the downtown area of Sao 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-, SO42- and Ca2+, with volume weighed mean (VWM) concentrations of 37.1, 20.1, 11.9 and 10.8 mu mol L-1, respectively. All the determined species showed high inter-events variability, including free H+ ions whose VWM concentration was 4.03 mu mol L-1, corresponding to a pH value of 5.39.
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