THE SEASONAL VARIATION IN THE CONCENTRATION OF POLYCYCLIC AROMATIC HYDROCARBONS AND PARTICULATE MATTER PM10 IN THE ATMOSPHERE OF SÃO PAULO / "A variação sazonal na concentração de hidrocarbonetos policíclicos aromáticos e material particulado MP10 na atmosfera de São Paulo"

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The seasonal influences on the concentrations of polycyclic aromatic hydrocarbons (PAH) and n-alkanes in the particulate matter PM10 were studied in this work from November 2001 to June 2002 (n = 23), and between April 2003 and May 2004 (n=31), in continuity to the studies accomplished in the winter of 2000 in the metropolitan area of São Paulo (MASP). Atmospheric aerosol samples in this work were collected in an open area on the roof of the Department of Atmospheric Sciences of USP, located in the campus in the University of São Paulo, in the west area of the city of São Paulo. The meteorological parameters, as temperature, precipitation, relative humidity, direction and wind speed were monitored. On average, in the coldest stations they were obtained the largest concentrations of PM10, PAH and n-alkanes, in agreement with other studies. The data were treated with statistical tools such as Principal Component Analysis and studies of the diagnostic ratios, suggesting some sources of emissions and pointing the vehicular emission as majority source of these pollutant ones in the atmospheric.

ASSUNTO(S)

poluentes atmosfericos particulate matter atmospheric aerosol hpa aerossol atmosferico pollutant atmospheric sao paulo material particulado sao paulo pah

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