Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study

Detalhes bibliográficos
Autor(a) principal: Kourtchev, Ivan N.
Data de Publicação: 2016
Outros Autores: Godoi, Ricardo Henrique Moreton, Connors, Sarah, Levine, James G., Archibald, Alexander Thomas, Godoi, Ana Flávia Locateli, Paralovo, Sarah L., Barbosa, Cybelli G.G., Souza, Rodrigo Augusto Ferreira de, Manzi, Antônio Ocimar, Seco, Roger, Sjostedt, Steven J., Park, Jeonghoo, Guenther, Alex B., Kim, Saewung, Smith, James N., Martin, Scot T., Kalberer, Markus
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional do INPA
Texto Completo: https://repositorio.inpa.gov.br/handle/1/15799
Resumo: The Amazon Basin plays key role in atmospheric chemistry, biodiversity and climate change. In this study we applied nanoelectrospray (nanoESI) ultra-high-resolution mass spectrometry (UHRMS) for the analysis of the organic fraction of PM2.5 aerosol samples collected during dry and wet seasons at a site in central Amazonia receiving background air masses, biomass burning and urban pollution. Comprehensive mass spectral data evaluation methods (e.g. Kendrick mass defect, Van Krevelen diagrams, carbon oxidation state and aromaticity equivalent) were used to identify compound classes and mass distributions of the detected species. Nitrogen-and/or sulfur-containing organic species contributed up to 60% of the total identified number of formulae. A large number of molecular formulae in organic aerosol (OA) were attributed to later-generation nitrogen-and sulfur-containing oxidation products, suggesting that OA composition is affected by biomass burning and other, potentially anthropogenic, sources. Isoprene-derived organosulfate (IEPOX-OS) was found to be the most dominant ion in most of the analysed samples and strongly followed the concentration trends of the gas-phase anthropogenic tracers confirming its mixed anthropogenic-biogenic origin. The presence of oxidised aromatic and nitro-aromatic compounds in the samples suggested a strong influence from biomass burning especially during the dry period. Aerosol samples from the dry period and under enhanced biomass burning conditions contained a large number of molecules with high carbon oxidation state and an increased number of aromatic compounds compared to that from the wet period. The results of this work demonstrate that the studied site is influenced not only by biogenic emissions from the forest but also by biomass burning and potentially other anthropogenic emissions from the neighbouring urban environments. © 2016 Author(s).
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spelling Kourtchev, Ivan N.Godoi, Ricardo Henrique MoretonConnors, SarahLevine, James G.Archibald, Alexander ThomasGodoi, Ana Flávia LocateliParalovo, Sarah L.Barbosa, Cybelli G.G.Souza, Rodrigo Augusto Ferreira deManzi, Antônio OcimarSeco, RogerSjostedt, Steven J.Park, JeonghooGuenther, Alex B.Kim, SaewungSmith, James N.Martin, Scot T.Kalberer, Markus2020-05-18T21:21:06Z2020-05-18T21:21:06Z2016https://repositorio.inpa.gov.br/handle/1/1579910.5194/acp-16-11899-2016The Amazon Basin plays key role in atmospheric chemistry, biodiversity and climate change. In this study we applied nanoelectrospray (nanoESI) ultra-high-resolution mass spectrometry (UHRMS) for the analysis of the organic fraction of PM2.5 aerosol samples collected during dry and wet seasons at a site in central Amazonia receiving background air masses, biomass burning and urban pollution. Comprehensive mass spectral data evaluation methods (e.g. Kendrick mass defect, Van Krevelen diagrams, carbon oxidation state and aromaticity equivalent) were used to identify compound classes and mass distributions of the detected species. Nitrogen-and/or sulfur-containing organic species contributed up to 60% of the total identified number of formulae. A large number of molecular formulae in organic aerosol (OA) were attributed to later-generation nitrogen-and sulfur-containing oxidation products, suggesting that OA composition is affected by biomass burning and other, potentially anthropogenic, sources. Isoprene-derived organosulfate (IEPOX-OS) was found to be the most dominant ion in most of the analysed samples and strongly followed the concentration trends of the gas-phase anthropogenic tracers confirming its mixed anthropogenic-biogenic origin. The presence of oxidised aromatic and nitro-aromatic compounds in the samples suggested a strong influence from biomass burning especially during the dry period. Aerosol samples from the dry period and under enhanced biomass burning conditions contained a large number of molecules with high carbon oxidation state and an increased number of aromatic compounds compared to that from the wet period. The results of this work demonstrate that the studied site is influenced not only by biogenic emissions from the forest but also by biomass burning and potentially other anthropogenic emissions from the neighbouring urban environments. © 2016 Author(s).Volume 16, Número 18, Pags. 11899-11913Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessAerosol CompositionBiogenic EmissionBiomass-burningMass SpectrometryNitrogenParticulate MatterSulfurAmazon BasinAmazoniaMolecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry studyinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleAtmospheric Chemistry and Physicsengreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfartigo-inpa.pdfapplication/pdf5103420https://repositorio.inpa.gov.br/bitstream/1/15799/1/artigo-inpa.pdfd2994d04776417d7303dca8b857bd762MD511/157992020-05-18 17:40:40.567oai:repositorio:1/15799Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-05-18T21:40:40Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false
dc.title.en.fl_str_mv Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study
title Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study
spellingShingle Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study
Kourtchev, Ivan N.
Aerosol Composition
Biogenic Emission
Biomass-burning
Mass Spectrometry
Nitrogen
Particulate Matter
Sulfur
Amazon Basin
Amazonia
title_short Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study
title_full Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study
title_fullStr Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study
title_full_unstemmed Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study
title_sort Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study
author Kourtchev, Ivan N.
author_facet Kourtchev, Ivan N.
Godoi, Ricardo Henrique Moreton
Connors, Sarah
Levine, James G.
Archibald, Alexander Thomas
Godoi, Ana Flávia Locateli
Paralovo, Sarah L.
Barbosa, Cybelli G.G.
Souza, Rodrigo Augusto Ferreira de
Manzi, Antônio Ocimar
Seco, Roger
Sjostedt, Steven J.
Park, Jeonghoo
Guenther, Alex B.
Kim, Saewung
Smith, James N.
Martin, Scot T.
Kalberer, Markus
author_role author
author2 Godoi, Ricardo Henrique Moreton
Connors, Sarah
Levine, James G.
Archibald, Alexander Thomas
Godoi, Ana Flávia Locateli
Paralovo, Sarah L.
Barbosa, Cybelli G.G.
Souza, Rodrigo Augusto Ferreira de
Manzi, Antônio Ocimar
Seco, Roger
Sjostedt, Steven J.
Park, Jeonghoo
Guenther, Alex B.
Kim, Saewung
Smith, James N.
Martin, Scot T.
Kalberer, Markus
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Kourtchev, Ivan N.
Godoi, Ricardo Henrique Moreton
Connors, Sarah
Levine, James G.
Archibald, Alexander Thomas
Godoi, Ana Flávia Locateli
Paralovo, Sarah L.
Barbosa, Cybelli G.G.
Souza, Rodrigo Augusto Ferreira de
Manzi, Antônio Ocimar
Seco, Roger
Sjostedt, Steven J.
Park, Jeonghoo
Guenther, Alex B.
Kim, Saewung
Smith, James N.
Martin, Scot T.
Kalberer, Markus
dc.subject.eng.fl_str_mv Aerosol Composition
Biogenic Emission
Biomass-burning
Mass Spectrometry
Nitrogen
Particulate Matter
Sulfur
Amazon Basin
Amazonia
topic Aerosol Composition
Biogenic Emission
Biomass-burning
Mass Spectrometry
Nitrogen
Particulate Matter
Sulfur
Amazon Basin
Amazonia
description The Amazon Basin plays key role in atmospheric chemistry, biodiversity and climate change. In this study we applied nanoelectrospray (nanoESI) ultra-high-resolution mass spectrometry (UHRMS) for the analysis of the organic fraction of PM2.5 aerosol samples collected during dry and wet seasons at a site in central Amazonia receiving background air masses, biomass burning and urban pollution. Comprehensive mass spectral data evaluation methods (e.g. Kendrick mass defect, Van Krevelen diagrams, carbon oxidation state and aromaticity equivalent) were used to identify compound classes and mass distributions of the detected species. Nitrogen-and/or sulfur-containing organic species contributed up to 60% of the total identified number of formulae. A large number of molecular formulae in organic aerosol (OA) were attributed to later-generation nitrogen-and sulfur-containing oxidation products, suggesting that OA composition is affected by biomass burning and other, potentially anthropogenic, sources. Isoprene-derived organosulfate (IEPOX-OS) was found to be the most dominant ion in most of the analysed samples and strongly followed the concentration trends of the gas-phase anthropogenic tracers confirming its mixed anthropogenic-biogenic origin. The presence of oxidised aromatic and nitro-aromatic compounds in the samples suggested a strong influence from biomass burning especially during the dry period. Aerosol samples from the dry period and under enhanced biomass burning conditions contained a large number of molecules with high carbon oxidation state and an increased number of aromatic compounds compared to that from the wet period. The results of this work demonstrate that the studied site is influenced not only by biogenic emissions from the forest but also by biomass burning and potentially other anthropogenic emissions from the neighbouring urban environments. © 2016 Author(s).
publishDate 2016
dc.date.issued.fl_str_mv 2016
dc.date.accessioned.fl_str_mv 2020-05-18T21:21:06Z
dc.date.available.fl_str_mv 2020-05-18T21:21:06Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://repositorio.inpa.gov.br/handle/1/15799
dc.identifier.doi.none.fl_str_mv 10.5194/acp-16-11899-2016
url https://repositorio.inpa.gov.br/handle/1/15799
identifier_str_mv 10.5194/acp-16-11899-2016
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Volume 16, Número 18, Pags. 11899-11913
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Atmospheric Chemistry and Physics
publisher.none.fl_str_mv Atmospheric Chemistry and Physics
dc.source.none.fl_str_mv reponame:Repositório Institucional do INPA
instname:Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron:INPA
instname_str Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron_str INPA
institution INPA
reponame_str Repositório Institucional do INPA
collection Repositório Institucional do INPA
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