Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.atmosenv.2020.117502 http://hdl.handle.net/11449/198746 |
Resumo: | Estimates of nitrogen deposition play a key role in better understanding the human impacts on the nitrogen biogeochemical cycle. This paper examines the concentration of reactive nitrogen (Nr) in the atmosphere and the average dry deposition in the state of São Paulo, Brazil. The Nr species that were measured were in the gaseous (NO2, NH3 and HNO3) and particulate phases (NH4+, NO3−). Denuder-based samplers were spatially distributed in six sites to account for different types of land cover and urbanization. Samples were collected over 2 years (2015–2017). The dominant form of inorganic Nr in the atmosphere was the gaseous NO2 at all sampling sites, which represented 79% of the total. The average concentrations of NH3, HNO3, NH4+ and NO3− were 10%, 3%, 6% and 2% of the total Nr, respectively. The average Nr dry deposition in São Paulo State was 10.6 kg N ha−1 yr−1. The highest average deposition of Nr was found in the SP sampling site and is related to intense vehicular traffic, waste management and industrial activities. This work suggests that dry deposition of Nr into the Atlantic Forest next to São Paulo municipality can exceed the critical nitrogen load suggested for most forests. This implies that human activities in the surrounding areas may be affecting the integrity of one of the most important biodiversity hotspots in South America. These results will contribute to improve Nr budget estimates and to advance Nr deposition modelling approaches. |
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Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, BrazilDry depositionNitrogen emissionParticulate matterReactive nitrogenEstimates of nitrogen deposition play a key role in better understanding the human impacts on the nitrogen biogeochemical cycle. This paper examines the concentration of reactive nitrogen (Nr) in the atmosphere and the average dry deposition in the state of São Paulo, Brazil. The Nr species that were measured were in the gaseous (NO2, NH3 and HNO3) and particulate phases (NH4+, NO3−). Denuder-based samplers were spatially distributed in six sites to account for different types of land cover and urbanization. Samples were collected over 2 years (2015–2017). The dominant form of inorganic Nr in the atmosphere was the gaseous NO2 at all sampling sites, which represented 79% of the total. The average concentrations of NH3, HNO3, NH4+ and NO3− were 10%, 3%, 6% and 2% of the total Nr, respectively. The average Nr dry deposition in São Paulo State was 10.6 kg N ha−1 yr−1. The highest average deposition of Nr was found in the SP sampling site and is related to intense vehicular traffic, waste management and industrial activities. This work suggests that dry deposition of Nr into the Atlantic Forest next to São Paulo municipality can exceed the critical nitrogen load suggested for most forests. This implies that human activities in the surrounding areas may be affecting the integrity of one of the most important biodiversity hotspots in South America. These results will contribute to improve Nr budget estimates and to advance Nr deposition modelling approaches.Inter-American Institute for Global Change ResearchIsrael Aerospace IndustriesEarth System Science Center National Institute for Space Research CCST/INPE, Av. dos Astronautas 1758, Jardim da GranjaUniversidade de São Paulo USP Departamento de Química, Av. dos Bandeirantes 3900, Monte AlegreUniversidade Estadual Paulista UNESP, Av. Dr. Ariberto Pereira da Cunha 333, PedregulhoUniversidade Estadual Paulista UNESP, Av. Dr. Ariberto Pereira da Cunha 333, PedregulhoIsrael Aerospace Industries: CRN3005CCST/INPEUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Souza, Mariana de Almeida [UNESP]Pacheco, Felipe SiqueiraPalandi, Jalusa Aparecida de LeoForti, Maria CristinaCampos, Maria Lucia A.M.Ometto, Jean Pierre H.B.Reis, Dayane Cristina Oliveirade Carvalho Junior, João Andrade [UNESP]2020-12-12T01:20:58Z2020-12-12T01:20:58Z2020-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.atmosenv.2020.117502Atmospheric Environment, v. 230.1873-28441352-2310http://hdl.handle.net/11449/19874610.1016/j.atmosenv.2020.1175022-s2.0-85083449676Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAtmospheric Environmentinfo:eu-repo/semantics/openAccess2021-10-22T20:11:13Zoai:repositorio.unesp.br:11449/198746Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:38:02.216888Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, Brazil |
title |
Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, Brazil |
spellingShingle |
Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, Brazil Souza, Mariana de Almeida [UNESP] Dry deposition Nitrogen emission Particulate matter Reactive nitrogen |
title_short |
Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, Brazil |
title_full |
Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, Brazil |
title_fullStr |
Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, Brazil |
title_full_unstemmed |
Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, Brazil |
title_sort |
Atmospheric concentrations and dry deposition of reactive nitrogen in the state of São Paulo, Brazil |
author |
Souza, Mariana de Almeida [UNESP] |
author_facet |
Souza, Mariana de Almeida [UNESP] Pacheco, Felipe Siqueira Palandi, Jalusa Aparecida de Leo Forti, Maria Cristina Campos, Maria Lucia A.M. Ometto, Jean Pierre H.B. Reis, Dayane Cristina Oliveira de Carvalho Junior, João Andrade [UNESP] |
author_role |
author |
author2 |
Pacheco, Felipe Siqueira Palandi, Jalusa Aparecida de Leo Forti, Maria Cristina Campos, Maria Lucia A.M. Ometto, Jean Pierre H.B. Reis, Dayane Cristina Oliveira de Carvalho Junior, João Andrade [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
CCST/INPE Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Souza, Mariana de Almeida [UNESP] Pacheco, Felipe Siqueira Palandi, Jalusa Aparecida de Leo Forti, Maria Cristina Campos, Maria Lucia A.M. Ometto, Jean Pierre H.B. Reis, Dayane Cristina Oliveira de Carvalho Junior, João Andrade [UNESP] |
dc.subject.por.fl_str_mv |
Dry deposition Nitrogen emission Particulate matter Reactive nitrogen |
topic |
Dry deposition Nitrogen emission Particulate matter Reactive nitrogen |
description |
Estimates of nitrogen deposition play a key role in better understanding the human impacts on the nitrogen biogeochemical cycle. This paper examines the concentration of reactive nitrogen (Nr) in the atmosphere and the average dry deposition in the state of São Paulo, Brazil. The Nr species that were measured were in the gaseous (NO2, NH3 and HNO3) and particulate phases (NH4+, NO3−). Denuder-based samplers were spatially distributed in six sites to account for different types of land cover and urbanization. Samples were collected over 2 years (2015–2017). The dominant form of inorganic Nr in the atmosphere was the gaseous NO2 at all sampling sites, which represented 79% of the total. The average concentrations of NH3, HNO3, NH4+ and NO3− were 10%, 3%, 6% and 2% of the total Nr, respectively. The average Nr dry deposition in São Paulo State was 10.6 kg N ha−1 yr−1. The highest average deposition of Nr was found in the SP sampling site and is related to intense vehicular traffic, waste management and industrial activities. This work suggests that dry deposition of Nr into the Atlantic Forest next to São Paulo municipality can exceed the critical nitrogen load suggested for most forests. This implies that human activities in the surrounding areas may be affecting the integrity of one of the most important biodiversity hotspots in South America. These results will contribute to improve Nr budget estimates and to advance Nr deposition modelling approaches. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:20:58Z 2020-12-12T01:20:58Z 2020-06-01 |
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 |
http://dx.doi.org/10.1016/j.atmosenv.2020.117502 Atmospheric Environment, v. 230. 1873-2844 1352-2310 http://hdl.handle.net/11449/198746 10.1016/j.atmosenv.2020.117502 2-s2.0-85083449676 |
url |
http://dx.doi.org/10.1016/j.atmosenv.2020.117502 http://hdl.handle.net/11449/198746 |
identifier_str_mv |
Atmospheric Environment, v. 230. 1873-2844 1352-2310 10.1016/j.atmosenv.2020.117502 2-s2.0-85083449676 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Atmospheric Environment |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129445413781504 |