| dc.contributor | Univ Mayor, Ctr Genom Ecol & Environm, GEMA, Chile | es |
| dc.contributor.author | Tucca, Felipe | |
| dc.contributor.author | Luarte, Thais [Univ Mayor, Ctr Genom Ecol & Environm, GEMA, Chile] | |
| dc.contributor.author | Nimptsch, Jorge | |
| dc.contributor.author | Woelfl, Stefan | |
| dc.contributor.author | Pozo, Karla | |
| dc.contributor.author | Casas, Gemma | |
| dc.contributor.author | Dachs, Jordi | |
| dc.contributor.author | Barra, Ricardo | |
| dc.contributor.author | Chiang, Gustavo | |
| dc.contributor.author | Galban-Malagón, Cristóbal [Univ Mayor, Ctr Genom Ecol & Environm, GEMA, Chile] | |
| dc.date.accessioned | 2022-02-28T18:57:35Z | |
| dc.date.available | 2022-02-28T18:57:35Z | |
| dc.date.issued | 2020-10 | |
| dc.identifier.citation | Tucca, F., Luarte, T., Nimptsch, J., Woelfl, S., Pozo, K., Casas, G., ... & Galbán-Malagón, C. (2020). Sources and diffusive air–water exchange of polycyclic aromatic hydrocarbons in an oligotrophic North–Patagonian lake. Science of The Total Environment, 738, 139838. | es |
| dc.identifier.issn | 0048-9697 | |
| dc.identifier.issn | eISSN: 1879-1026 | |
| dc.identifier.other | WOS: 000559087400002 | |
| dc.identifier.other | PMID: 32531599 | |
| dc.identifier.other | Scopus: 2-s2.0-85086068427 | |
| dc.identifier.uri | http://repositorio.umayor.cl/xmlui/handle/sibum/8359 | |
| dc.identifier.uri | https://www.sciencedirect.com/science/article/abs/pii/S0048969720333581?via%3Dihub | |
| dc.identifier.uri | https://doi.org/10.1016/j.scitotenv.2020.139838 | |
| dc.identifier.uri | https://researchers.unab.cl/es/publications/sources-and-diffusive-airwater-exchange-of-polycyclic-aromatic-hy | |
| dc.identifier.uri | https://pubmed.ncbi.nlm.nih.gov/32531599/ | |
| dc.description.abstract | Polycyclic aromatic hydrocarbons (PAHs) are semivolatile organic compounds of environmental concern. This study aims to investigate the influence of local sources of anthropogenic PAHs and their air-water exchange fluxes in an oligotrophic North-Patagonian lake in Chile. The monitoring was carried out in Panguipulli Lake during a six-month period during the autumn and winter seasons (March to August 2017) using a high-volume air sampler and a pump system for water samples. We detected and quantified fifteen PAHs in the gas phase (mean Sigma(15)PAHs - 11.6 ng m(-3)) and dissolved water phase (mean Sigma(15)PAHs - 961.8 pg L-1). Methylphenanthrenes and pyrene dominated the concentrations of PAHs in the studied phases. To determine sources of PAHs we used the PAH ratios of Light Molecular Weight/Heavy Molecular Weight (Sigma LMW/Sigma HMW) and Phenanthrene/Anthracene (Phe/Ant). The PAH ratio results revealed a pyrogenic source. We estimated the air-water diffusive exchange fluxes and fugacity ratios for the studied compounds. In general, air-water diffusive exchanges of PAHs showed a net volatilization for the less hydrophobic (log K-ow < 4) and lighter PAHs (MW <= 170 g mol(-1)), and a net deposition trend for the more hydrophobic (log K-ow 4-7) and higher molecular weight PAHs (MW >= 178 g mol(-1)). We found a significant correlation between log water/air fugacity ratios and log K-ow of PAHs. Therefore, it is suggested that this oligotrophic lake acts as a sink by accumulating hydrophobic and mid-high molecular weight PAHs derived mainly from pyrogenic sources. This study is the first attempt to understand the sources and behavior of PAHs in oligotrophic lakes in the Southern Chile where information is scarce regarding the occurrence of PAHs. (C) 2020 Elsevier B.V. All rights reserved. | es |
| dc.description.sponsorship | This study was funded by ANID FONDECYT 11150548, 1161504, ANID PCI REDI170292, ANID PIA Anillo INACH ACT192057, INACH REGULAR RT_12_17 (C. Galban-Malagon) and ANID FONDECYT No 3180159 (F. Tucca). Authors also thank the support of ANID FONDAP CRHIAM 15130015 (R. Barra and F. Tucca), ANID FONDECYT 1161673 (K. Pozo), "Universidad Andres Bello" is thanked for funding a PhD scholarship awarded to Miss Thais Luarte. The "Universidad Austral de Chile" was highly acknowledged by their continuous logistic support on the lake. Kevin Ryan PhD(c) is thanked for language editing of the final version of the present manuscript. | es |
| dc.format.extent | 19 p., PDF | es |
| dc.language.iso | en_US | es |
| dc.publisher | Elsevier | es |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | es |
| dc.title | Sources and diffusive air-water exchange of polycyclic aromatic hydrocarbons in an oligotrophic North-Patagonian lake | es |
| dc.type | Artículo o Paper | es |
| umayor.indizador | COT | es |
| umayor.politicas.sherpa/romeo | Licencia CC BY-NC-ND 4.0. Disponible en: https://v2.sherpa.ac.uk/id/publication/15487 | es |
| umayor.indexado | Web of Science | es |
| umayor.indexado | Scopus | es |
| umayor.indexado | Repositorio UNAB | |
| umayor.indexado | PUBMED | |
| dc.identifier.doi | 10.1016/j.scitotenv.2020.139838 | |
| umayor.indicadores.wos-(cuartil) | Q1 | |
| umayor.indicadores.scopus-(scimago-sjr) | SCIMAGO/ INDICE H: 244 H | |
| umayor.indicadores.scopus-(scimago-sjr) | SJR 1.8 | |