Gioia, Simone M. C. L.
Weiss, Dominik J.
Kerr, Americo A. F. S.
Total Authors: 4
 Univ Sao Paulo, Inst Geociencias, Ctr Pesquisas Geocronol, BR-05508080 Sao Paulo - Brazil
 Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ - England
 Nat Hist Museum, London SW7 5PD - England
 Univ Sao Paulo, Inst Fis, Dept Fis Aplicada, BR-05508080 Sao Paulo - Brazil
Total Affiliations: 4
Web of Science Citations:
We present the first results of a study investigating the processes that control concentrations and sources of Pb and particulate matter in the atmosphere of Sao Paulo City Brazil Aerosols were collected with high temporal resolution (3 hours) during a four-day period in July 2005 The highest Pb concentrations measured coincided with large fireworks during celebration events and associated to high traffic occurrence Our high-resolution data highlights the impact that a singular transient event can have on air quality even in a megacity Under meteorological conditions non-conducive to pollutant dispersion Pb and particulate matter concentrations accumulated during the night leading to the highest concentrations in aerosols collected early in the morning of the following day The stable isotopes of Pb suggest that emissions from traffic remain an Important source of Pb in Sao Paulo City due to the large traffic fleet despite low Pb concentrations in fuels (C) 2010 Elsevier BV All rights reserved (AU)