Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/75953
Type: Artigo de periódico
Title: Water-soluble ions and trace metals in airborne particles over urban areas of the state of sauo paulo, Brazil: Influences of local sources and long range transport
Author: Vasconcellos, PC
Balasubramanian, R
Bruns, RE
Sanchez-Ccoyllo, O
Andrade, MF
Flues, M
Abstract: The atmosphere over Brazilian cities is influenced by a variety of emissions sources. In this study, aerosol collection and back-trajectory analysis were used to determine the influence of local and remote sources. Aerosols were collected at three locations within the state of Sao Paulo: one megacity and two cities in which sugar cane burning in the surroundings is observed. We quantified the major water-soluble inorganic ions and trace metals. As expected, vehicle emissions influenced the atmosphere of the megacity heavily, and sugar cane burning influenced that of the other locations. During the period of this experiment the back-trajectory analysis revealed that air masses are transported into the state from the northeast of Brazil, where biomass burning occurs. Multivariate statistical analysis revealed that the two principal components account for 48.5% of the total data variance. We conclude that local sources have a strong impact on the concentrations of particulate matter and pollutants. Remote sources also contribute to the concentrations of aerosol pollutants.
Subject: Urban atmosphere
Air pollution
Inorganic compounds
Atmospheric chemistry
Pollutants transport
Country: Holanda
Editor: Springer
Rights: fechado
Identifier DOI: 10.1007/s11270-007-9465-2
Date Issue: 2007
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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