Journal of the Brazilian Chemical Society | |
Seasonal distribution of airborne trace elements and water-soluble ions in São Paulo Megacity, Brazil | |
Gisele O. Da Rocha2  Pérola C. Vasconcellos1  Simone G. Ávila1  Davi Z. Souza1  Eduardo A. O. Reis1  Pedro V. Oliveira1  Odon Sanchez-ccoyllo1  | |
[1] ,Universidade Federal da Bahia Instituto de Química Salvador BA ,Brazil | |
关键词: major ion composition; water-soluble ions; trace elements; seasonal distribution of atmospheric contaminants; airborne particulate matter; | |
DOI : 10.1590/S0103-50532012005000062 | |
来源: SciELO | |
【 摘 要 】
This study deals with the seasonal distribution of Al, Ca, Cu, Fe, K, Mg, Na, Pb and Zn and water soluble ions (Cl-, PO4(3-), NO3-, SO4(2-), HCOO-, CH3COO-, oxalate, succinate, Na+, NH4+, K+, Mg2+ and Ca2+) found in PM10 samples (particulate matter less than 10 mm in diameter) São Paulo City, Brazil, (April 2003-May 2004). Higher atmospheric levels were found for SO4(2-), NO3-, Cl- and PO4(3-) while the main organic anions were oxalate and formate. Atmospheric levels for elements were: Fe > Al > Ca > K > Na > Mg > Zn > Cu > Pb. Some sources were predominant for some species: (i) fuel burning and/or biomass burning (NO3-, HCOO-, C2O4(2-), K+, Mg2+, Ca2+, Fe, Pb, Zn, Al, Ca, K and Mg), (ii) gas-to-particle conversion (SO4(2-) and NH4+) and (iii) sea salt spray (Cl-, Na+ and Na).
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
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