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Influence of Intensive Agriculture on Dry Deposition of Aerosol Nutrients

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorAllen, Andrew G.
dc.creatorCardoso, Arnaldo Alves
dc.creatorWiatr, Antony G.
dc.creatorMachado, Cristine M. D.
dc.creatorPaterlini, Willian C.
dc.creatorBaker, Jacob
dc.date2014-05-20T15:32:21Z
dc.date2016-10-25T18:08:33Z
dc.date2014-05-20T15:32:21Z
dc.date2016-10-25T18:08:33Z
dc.date2010-01-01
dc.date.accessioned2017-04-06T00:27:13Z
dc.date.available2017-04-06T00:27:13Z
dc.identifierJournal of The Brazilian Chemical Society. São Paulo: Soc Brasileira Quimica, v. 21, n. 1, p. 87-97, 2010.
dc.identifier0103-5053
dc.identifierhttp://hdl.handle.net/11449/41277
dc.identifierhttp://acervodigital.unesp.br/handle/11449/41277
dc.identifier10.1590/S0103-50532010000100014
dc.identifierS0103-50532010000100014
dc.identifierWOS:000275106400013
dc.identifierhttp://dx.doi.org/10.1590/S0103-50532010000100014
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/883988
dc.descriptionA procedure is presented for quantification of sources contributing to atmospheric aerosol chemical nutrient concentrations and dry deposition fluxes. Source apportionment using principal component analysis (PCA) and multiple linear regression analysis (MLRA) was followed by application of a size-segregated particle dry deposition model. In a rural region of southeast Brazil, biomass burning, products of secondary reactions, and soil dust re-suspension explained 43%, 31% and 21% of PM(2.5) mass, respectively. Re-suspension and biomass burning contributed 22% and 19%, respectively, to PM(10) mass, and re-suspension accounted for approximately half of the mass of coarse particles. At least 40% of NO(3)(-)-N, 20% of phosphorus and 55% of potassium deposited originated from agriculture-related emissions. Deposition to tropical forest is currently higher than the minimum under natural conditions by factors of 12.2 (N), 6.2 (P) and 2.6 (K).
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageeng
dc.publisherSoc Brasileira Quimica
dc.relationJournal of the Brazilian Chemical Society
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectaerosols
dc.subjectpollution
dc.subjectdeposition
dc.subjectnutrients
dc.subjectsource apportionment
dc.titleInfluence of Intensive Agriculture on Dry Deposition of Aerosol Nutrients
dc.typeOtro


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