Molecular composition of organic aerosols in central Amazonia: An ultra-high-resolution mass spectrometry study
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , , , , , , , , , , , |
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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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 |
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INPA |
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