Concentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia)
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFBA |
Texto Completo: | http://repositorio.ufba.br/ri/handle/ri/14376 |
Resumo: | Texto completo: acesso restrito. p. 1-13 |
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Oliva, S. T.Botelho, Maria de LourdesSilva, C. M. A.Tavares, Tânia MascarenhasKesselmeier, J.Kuhn, U.Rottenberger, S.Biesenthal, T.Wolf, A.Schebeske, G.Andreae, M. O.Ciccioli, P.Brancaleoni, E.Frattoni, M.Oliva, S. T.Botelho, Maria de LourdesSilva, C. M. A.Tavares, Tânia MascarenhasKesselmeier, J.Kuhn, U.Rottenberger, S.Biesenthal, T.Wolf, A.Schebeske, G.Andreae, M. O.Ciccioli, P.Brancaleoni, E.Frattoni, M.2014-01-20T13:26:23Z20022169-897Xhttp://repositorio.ufba.br/ri/handle/ri/14376v. 107, n. 20Texto completo: acesso restrito. p. 1-13We measured atmospheric gas-phase volatile organic compounds (VOCs) at the end of the wet and end of the dry season at a tropical rainforest site in Rondônia, Brazil, using various sampling techniques such as trapping on different adsorbents or cryogenic trapping combined with appropriate analysis techniques. The measuring sites were located inside the forest of a biological reserve near Ji-Paraná. Sampling was performed from 3 May 1999 to 17 May 1999 and from 24 September 1999 to 2 November 1999 during the “wet-to-dry season transition” and “dry-to-wet season transition” periods in Rondônia, respectively. Samples were obtained at the canopy top close to the potential sources/sinks for these compounds as well as above the forest. We report the measured concentrations of a large number of different VOCs and their oxidation products, such as isoprenoids, organic acids, carbonyls, aromatics, and alcohols. The most prominent VOCs present in air over the last part of the wet season were isoprene, formaldehyde, and formic acid, with mixing ratios of each ranging up to several parts per billion (ppb). Methyl vinyl ketone as well as methacrolein, both oxidation products of isoprene, ranged around 1 ppb. The sum of the measured monoterpene concentrations was below 1 ppb. At the end of the dry season, the amount of C1–C2 organic acids and C1–C2 aldehydes increased significantly up to 17 and 25 ppb, respectively, which is thought to result significantly from vegetation fire emissions. High methanol concentrations also support this scenario. At the same time, however, atmospheric mixing ratios of biogenic compounds such as isoprene increased up to 30 ppb near the crown region and well above 10 ppb at 10–20 m over the forest, whereas monoterpene species seem to decrease. We discuss seasonal development of the vegetation and climatological factors to be responsible for such concentration pattern. The results give an impression about the variability and concentration of VOCs during the different seasons.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-01-20T13:26:23Z No. of bitstreams: 1 S. T. Oliva.pdf: 814795 bytes, checksum: d4f6f77bb2a5411243189df225dc06a2 (MD5)Made available in DSpace on 2014-01-20T13:26:23Z (GMT). No. of bitstreams: 1 S. T. Oliva.pdf: 814795 bytes, checksum: d4f6f77bb2a5411243189df225dc06a2 (MD5) Previous issue date: 2002http://dx.doi.org/ 10.1029/2000JD000267reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAVolatile organic compoundsIsopreneMonoterpenesAcidsCarbonylsConcentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia)Journal of Geophysical Research: Atmospheresinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengLICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14376/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52ORIGINALS. T. Oliva.pdfS. T. Oliva.pdfapplication/pdf814795https://repositorio.ufba.br/bitstream/ri/14376/1/S.%20T.%20Oliva.pdfd4f6f77bb2a5411243189df225dc06a2MD51TEXTS. T. Oliva.pdf.txtS. T. 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dc.title.pt_BR.fl_str_mv |
Concentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia) |
dc.title.alternative.pt_BR.fl_str_mv |
Journal of Geophysical Research: Atmospheres |
title |
Concentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia) |
spellingShingle |
Concentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia) Oliva, S. T. Volatile organic compounds Isoprene Monoterpenes Acids Carbonyls |
title_short |
Concentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia) |
title_full |
Concentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia) |
title_fullStr |
Concentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia) |
title_full_unstemmed |
Concentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia) |
title_sort |
Concentrations and species composition of atmospheric volatile organic compounds (VOCs) as observed during the wet and dry season in Rondoˆnia (Amazonia) |
author |
Oliva, S. T. |
author_facet |
Oliva, S. T. Botelho, Maria de Lourdes Silva, C. M. A. Tavares, Tânia Mascarenhas Kesselmeier, J. Kuhn, U. Rottenberger, S. Biesenthal, T. Wolf, A. Schebeske, G. Andreae, M. O. Ciccioli, P. Brancaleoni, E. Frattoni, M. |
author_role |
author |
author2 |
Botelho, Maria de Lourdes Silva, C. M. A. Tavares, Tânia Mascarenhas Kesselmeier, J. Kuhn, U. Rottenberger, S. Biesenthal, T. Wolf, A. Schebeske, G. Andreae, M. O. Ciccioli, P. Brancaleoni, E. Frattoni, M. |
author2_role |
author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Oliva, S. T. Botelho, Maria de Lourdes Silva, C. M. A. Tavares, Tânia Mascarenhas Kesselmeier, J. Kuhn, U. Rottenberger, S. Biesenthal, T. Wolf, A. Schebeske, G. Andreae, M. O. Ciccioli, P. Brancaleoni, E. Frattoni, M. Oliva, S. T. Botelho, Maria de Lourdes Silva, C. M. A. Tavares, Tânia Mascarenhas Kesselmeier, J. Kuhn, U. Rottenberger, S. Biesenthal, T. Wolf, A. Schebeske, G. Andreae, M. O. Ciccioli, P. Brancaleoni, E. Frattoni, M. |
dc.subject.por.fl_str_mv |
Volatile organic compounds Isoprene Monoterpenes Acids Carbonyls |
topic |
Volatile organic compounds Isoprene Monoterpenes Acids Carbonyls |
description |
Texto completo: acesso restrito. p. 1-13 |
publishDate |
2002 |
dc.date.issued.fl_str_mv |
2002 |
dc.date.accessioned.fl_str_mv |
2014-01-20T13:26:23Z |
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://repositorio.ufba.br/ri/handle/ri/14376 |
dc.identifier.issn.none.fl_str_mv |
2169-897X |
dc.identifier.number.pt_BR.fl_str_mv |
v. 107, n. 20 |
identifier_str_mv |
2169-897X v. 107, n. 20 |
url |
http://repositorio.ufba.br/ri/handle/ri/14376 |
dc.language.iso.fl_str_mv |
eng |
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dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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http://dx.doi.org/ 10.1029/2000JD000267 |
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