Chiral BVOCs composition over the Amazon and Atlantic Rainforest by TD-GCxGC-TOF/MS

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dc.contributor.authorOSTERMANN, CAROLINEpt_BR
dc.contributor.authorWILLIAMS, JONATHANpt_BR
dc.contributor.authorZANONNI, NORApt_BR
dc.contributor.authorKESSELMEIER, JURGENpt_BR
dc.contributor.authorTAPPIZ, BRUNOpt_BR
dc.contributor.authorGUENTHER, ALEXpt_BR
dc.contributor.authorVEGA, OSCARpt_BR
dc.contributor.coordenadorSIMIONATO, ANA V.C.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoIBEROAMERICAN CONFERENCE ON MASS SPECTROMETRY, 3rdpt_BR
dc.date.accessioned2023-03-23T17:59:03Z
dc.date.available2023-03-23T17:59:03Z
dc.date.eventoDecember 10-15, 2022pt_BR
dc.description.abstractIntroduction: Many BVOCs are chiral, meaning they exist in two non-superimposable mirror image forms termed enantiomers. Enantiomers have identical physical properties, such as boiling point, density, and reactivity to atmospheric oxidants; however, they differ in their specific biological activity. Since most monoterpene measurements do not distinguish enantiomers, relatively little is known about the natural abundance and behavior of the chiral speciated molecules. Previous studies have reported regiospecific patterns across Tropical and Boreal ecosystems for α-pinene [1] and have used them as tracers of secondary processes in air and soil [2][3], highlighting the potential use of chiral compounds in air to decipher processes linking the biosphere with the atmosphere. To better understand the sources, dynamics and sinks of BVOC in the forest environment we have investigated chiral BVOC in the pristine Amazonian rainforest environment at Amazon Tall Tower Observatory (ATTO) is located 150 km from Manaus/BR and in Atlantic Forest located in the Ecological Immigrant Park (PEI) at São Paulo/BR in 2019. Methods: Samples collected in 2019, were thermally desorbed, separated and analyzed through a Bench-TOF select (TD-GCxGC-TOF/MS tandem ionization-14eV and -70eV) from Markes International, UK. First, all samples through to Thermo-Desorption, that one we separated in two desorption: Primary one we use at the cartridges during 10 min in 250°C and in the second one is for trap during 10 min with 250°C. In the GC the column is Dimethyl TBS Cyclodextrin based so the oven was settled in 5 min at 40°C and 1.5°C/min during the temperature increase from 40°C until 150°C and then 30°C/min from 150°C until 200°C. Results: The VOCs and their chirals analyzed are: (-/+) α- Pinene, (-/+) Camphene, (-/+) β- Pinene, (-/+) Limonene, these chiral are of extreme importance because the fact of obtaining the same chemical composition, but different geometries the (-) and (+) differ in nature in their function/aroma, for example the ( -) α- Pinene is found in pine and (+) α- Pinene is found in eucalyptus, such as (-) Limonene emitted by orange and (+) Limonene emitted by lemon. The separation method was specifically designed for the separation of chiral monoterpenes (C H ) and sesquiterpenes (C H ). A chiral column is therefore needed to separate the two enantiomers, standard columns for GC-MS, comparing to an online PTR-MS would not allow enantiomeric separation. Conclusions: It was concluded that the ratio between the pairs of enantiomeric concentrations show a temporal and spatial variability. In forests not disturbed by humans, was found a significant amount of (-) α-Pinene, and due to human interference located in the metropolitan region of São Paulo, (+) Limonene was the BVOC with the highest concentration.pt_BR
dc.event.siglaIBEROpt_BR
dc.format.extent64-65pt_BR
dc.identifier.citationOSTERMANN, CAROLINE; WILLIAMS, JONATHAN; ZANONNI, NORA; KESSELMEIER, JURGEN; TAPPIZ, BRUNO; GUENTHER, ALEX; VEGA, OSCAR. Chiral BVOCs composition over the Amazon and Atlantic Rainforest by TD-GCxGC-TOF/MS. In: SIMIONATO, ANA V.C. (coord.). In: IBEROAMERICAN CONFERENCE ON MASS SPECTROMETRY, 3rd, December 10-15, 2022, Rio de Janeiro, RJ. <b>Abstract...</b> Campinas, SP: Sociedade Brasileira de Espectrometria de Massas - BrMASS, 2022. p. 64-65. Disponível em: http://repositorio.ipen.br/handle/123456789/33926.
dc.identifier.orcidhttps://orcid.org/0000-0002-4712-4057
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/33926
dc.localCampinas, SPpt_BR
dc.local.eventoRio de Janeiro, RJpt_BR
dc.publisherSociedade Brasileira de Espectrometria de Massas - BrMASSpt_BR
dc.rightsopenAccesspt_BR
dc.titleChiral BVOCs composition over the Amazon and Atlantic Rainforest by TD-GCxGC-TOF/MSpt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorBRUNO TAPPIZ
ipen.autorJOSE OSCAR WILLIAM VEGA BUSTILLOS
ipen.autorCAROLINE KAKO OSTERMANN
ipen.codigoautor11684
ipen.codigoautor82
ipen.codigoautor15008
ipen.contributor.ipenauthorBRUNO TAPPIZ
ipen.contributor.ipenauthorJOSE OSCAR WILLIAM VEGA BUSTILLOS
ipen.contributor.ipenauthorCAROLINE KAKO OSTERMANN
ipen.date.recebimento23-03
ipen.event.datapadronizada2022pt_BR
ipen.identifier.ipendoc29560pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublicationc0e9f90d-82a0-49d8-8e85-49e140aebace
relation.isAuthorOfPublicationfca54715-9422-40f4-97aa-f96c174fae47
relation.isAuthorOfPublicationa0078ec3-ecef-4020-8d80-8bb6582a8226
relation.isAuthorOfPublication.latestForDiscoverya0078ec3-ecef-4020-8d80-8bb6582a8226
sigepi.autor.atividadeVEGA, OSCAR:82:520:Npt_BR
sigepi.autor.atividadeTAPPIZ, BRUNO:11684:520:Npt_BR
sigepi.autor.atividadeOSTERMANN, CAROLINE:15008:520:Spt_BR
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