Volatile organic compounds measured by proton transfer reaction mass spectrometry over the complex terrain of Quintero Bay, Central Chile

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dc.article.number121759
dc.catalogadorjca
dc.contributor.authorSeguel, Rodrigo J.
dc.contributor.authorGarreaud, René
dc.contributor.authorMuñoz, Ricardo
dc.contributor.authorBozkurt, Deniz
dc.contributor.authorGallardo, Laura
dc.contributor.authorOpazo, Charlie
dc.contributor.authorJorquera, Héctor
dc.contributor.authorCastillo, Lucas
dc.contributor.authorMenares, Camilo
dc.contributor.otherCEDEUS (Chile)
dc.date.accessioned2024-06-06T14:28:09Z
dc.date.available2024-06-06T14:28:09Z
dc.date.issued2023
dc.description.abstractThis research provides new evidence regarding the different kinds of air quality episodes, and their underlying mechanisms, that frequently impact the urban area of Quintero Bay in Central Chile, which is located along complex coastal terrain and is surrounded by industries. The monitoring campaign was carried out in January 2022 and encompassed two distinctive meteorological regimes. The first part of the month was dominated by a coastal low centered to the south of Quintero, which resulted in prevailing northerly flow (or weak southerlies) and a deep cloud-topped marine boundary layer. After a 2–3-day transition, the latter collapsed, and a clear-sky regime ensued, which was characterized by a shallow boundary layer and strong southerly winds during the daytime that lasted until the end of the campaign. By using proton transfer reaction time of flight mass spectrometry (PTR–TOF–MS) at a high temporal resolution (1 s), we measured high levels of volatile organic compounds (VOCs) during air quality episodes in real time. The episodes detected were associated with different prevailing meteorological regimes, suggesting that different point sources were involved. In the first episode, propene/cyclopropane, butenes, benzene, toluene and ethylbenzene/xylenes were associated with north and northwesterly weak winds. Complaints associated with hydrocarbon odor were reported. The pollution originated from industrial and petrochemical units located to the north of Quintero, which transport and store natural gas, liquified petroleum gas and oil. The second episode was linked to an oil refinery located south of our measurement site. In this case, high levels of phenol, furan and cresols occurred under strong southwesterly winds. During this event, headaches and dizziness were reported. By contrast, the levels of other aromatic compounds (benzene, toluene, ethylbenzene/xylenes) were lower than in the first air pollution episode.
dc.fechaingreso.objetodigital2024-09-02
dc.fuente.origenORCID
dc.identifier.doi10.1016/j.envpol.2023.121759
dc.identifier.issn0269-7491
dc.identifier.urihttps://doi.org/10.1016/j.envpol.2023.121759
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0269749123007613?via%3Dihub
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/86510
dc.information.autorucEscuela de Ingeniería; Jorquera Gonzalez, Hector Ivan Joaquin; 0000-0002-7462-7901; 100302
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final12
dc.pagina.inicio1
dc.revistaEnvironmental Pollution
dc.rightsacceso restringido
dc.subjectVolatile organic compounds
dc.subjectToluene
dc.subjectBenzene
dc.subjectProton transfer reaction
dc.subjectSacrifice zone
dc.subjectAir quality episodes
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.subject.ods11 Sustainable cities and communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleVolatile organic compounds measured by proton transfer reaction mass spectrometry over the complex terrain of Quintero Bay, Central Chile
dc.typeartículo
dc.volumen330
sipa.codpersvinculados100302
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