Influence of intensive agriculture on dry deposition of aerosol nutrients
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100014 |
Resumo: | A 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 PM2.5 mass, respectively. Re-suspension and biomass burning contributed 22% and 19%, respectively, to PM10 mass, and re-suspension accounted for approximately half of the mass of coarse particles. At least 40% of NO3--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). |
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Influence of intensive agriculture on dry deposition of aerosol nutrientsaerosolspollutiondepositionnutrientssource apportionmentA 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 PM2.5 mass, respectively. Re-suspension and biomass burning contributed 22% and 19%, respectively, to PM10 mass, and re-suspension accounted for approximately half of the mass of coarse particles. At least 40% of NO3--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).Sociedade Brasileira de Química2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100014Journal of the Brazilian Chemical Society v.21 n.1 2010reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532010000100014info:eu-repo/semantics/openAccessAllen,Andrew G.Cardoso,Arnaldo A.Wiatr,Antony G.Machado,Cristine M. D.Paterlini,Willian C.Baker,Jacobeng2010-02-18T00:00:00Zoai:scielo:S0103-50532010000100014Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2010-02-18T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Influence of intensive agriculture on dry deposition of aerosol nutrients |
title |
Influence of intensive agriculture on dry deposition of aerosol nutrients |
spellingShingle |
Influence of intensive agriculture on dry deposition of aerosol nutrients Allen,Andrew G. aerosols pollution deposition nutrients source apportionment |
title_short |
Influence of intensive agriculture on dry deposition of aerosol nutrients |
title_full |
Influence of intensive agriculture on dry deposition of aerosol nutrients |
title_fullStr |
Influence of intensive agriculture on dry deposition of aerosol nutrients |
title_full_unstemmed |
Influence of intensive agriculture on dry deposition of aerosol nutrients |
title_sort |
Influence of intensive agriculture on dry deposition of aerosol nutrients |
author |
Allen,Andrew G. |
author_facet |
Allen,Andrew G. Cardoso,Arnaldo A. Wiatr,Antony G. Machado,Cristine M. D. Paterlini,Willian C. Baker,Jacob |
author_role |
author |
author2 |
Cardoso,Arnaldo A. Wiatr,Antony G. Machado,Cristine M. D. Paterlini,Willian C. Baker,Jacob |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Allen,Andrew G. Cardoso,Arnaldo A. Wiatr,Antony G. Machado,Cristine M. D. Paterlini,Willian C. Baker,Jacob |
dc.subject.por.fl_str_mv |
aerosols pollution deposition nutrients source apportionment |
topic |
aerosols pollution deposition nutrients source apportionment |
description |
A 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 PM2.5 mass, respectively. Re-suspension and biomass burning contributed 22% and 19%, respectively, to PM10 mass, and re-suspension accounted for approximately half of the mass of coarse particles. At least 40% of NO3--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). |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100014 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100014 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532010000100014 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.21 n.1 2010 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318170599587840 |