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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Elemental composition of the atmospheric aerosol in the central Amazon basin

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Author(s):
Andréa Arana [1] ; Paulo Artaxo [2]
Total Authors: 2
Affiliation:
[1] Instituto Nacional de Pesquisas da Amazônia - Brasil
[2] Universidade de São Paulo. Instituto de Física - Brasil
Total Affiliations: 2
Document type: Journal article
Source: Química Nova; v. 37, n. 2, p. 268-276, 2014-04-00.
Abstract

The processes and sources that regulate the elemental composition of aerosol particles were investigated in both fine and coarse modes during the dry and wet seasons. One hundred and nine samples were collected from the biological reserve Cuieiras - Manaus from February to October 2008, and analyzed together with 668 samples that were previously collected at Balbina from 1998 to 2002. Particle induced X-ray emission technique was used to determine the elemental composition, while the concentration of black carbon was obtained from the measurement of optical reflectance. Absolute principal factor analysis and positive matrix factorization were performed for source apportionment, which was complemented with back trajectory analysis. A regional identity for the natural biogenic aerosol was found for the Central Amazon Basin and can be used in dynamical chemical region models. (AU)

FAPESP's process: 08/58100-2 - Aeroclima: direct and indirect effects of aerosols on climate in Amazonia and Pantanal
Grantee:Paulo Eduardo Artaxo Netto
Support Opportunities: Research Program on Global Climate Change - Thematic Grants