Articles producció científica> Enginyeria Química

Climate change impact on the PAH photodegradation in soils: Characterization and metabolites identification

  • Identification data

    Identifier: imarina:2105303
    Authors:
    Marques, MontseMari, MontseAudi-Miro, CarmeSierra, JordiSoler, AlbertNadal, MartiDomingo, Jose L.
    Abstract:
    Polycyclic aromatic hydrocarbons (PAHs) are airborne pollutants that are deposited on soils. As climate change is already altering temperature and solar radiation, the global warming is suggested to impact the environmental fate of PAHs. This study was aimed at evaluating the effect of climate change on the PAH photodegradation in soils. Samples of Mediterranean soils were subjected to different temperature and light radiation conditions in a climate chamber. Two climate scenarios were considered according to IPCC projections: 1) a base (B) scenario, being temperature and light intensity 20°C and 9.6W/m(2), respectively, and 2) a climate change (CC) scenario, working at 24°C and 24W/m(2), respectively. As expected, low molecular weight PAHs were rapidly volatilized when increasing both temperature and light intensity. In contrast, medium and high molecular weight PAHs presented different photodegradation rates in soils with different texture, which was likely related to the amount of photocatalysts contained in both soils. In turn, the hydrogen isotopic composition of some of the PAHs under study was also investigated to verify any degradation process. Hydrogen isotopes confirmed that benzo(a)pyrene is degraded in both B and CC scenarios, not only under light but also in the darkness, revealing unknown degradation processes occurring when light is lacking. Potential generation pathways of PAH photodegradation by-products were also suggested, being a higher number of metabolites formed in the CC scenario. Consequently, in a more or less near future, although humans might be less exposed to PAHs, they could be exposed to new metabolites of these pollutants, which might be even more toxic. Copyright © 2016. Published by Elsevier Ltd.
  • Others:

    Author, as appears in the article.: Marques, Montse; Mari, Montse; Audi-Miro, Carme; Sierra, Jordi; Soler, Albert; Nadal, Marti; Domingo, Jose L.;
    Department: Enginyeria Química Ciències Mèdiques Bàsiques
    URV's Author/s: Domingo Roig, José Luis / Mari Marcos, Montserrat / Marquès Bueno, Montserrat / Nadal Lomas, Martí
    Keywords: Transport Temperature Services Products Polycyclic aromatic-hydrocarbons Polycyclic aromatic hydrocarbons (pahs) Photolysis Photodegradation Persistent organic pollutants Metabolites Mediterranean basin Isotope fractionation Hydrogen isotopes Degradation Climate change photodegradation metabolites hydrogen isotopes climate change
    Abstract: Polycyclic aromatic hydrocarbons (PAHs) are airborne pollutants that are deposited on soils. As climate change is already altering temperature and solar radiation, the global warming is suggested to impact the environmental fate of PAHs. This study was aimed at evaluating the effect of climate change on the PAH photodegradation in soils. Samples of Mediterranean soils were subjected to different temperature and light radiation conditions in a climate chamber. Two climate scenarios were considered according to IPCC projections: 1) a base (B) scenario, being temperature and light intensity 20°C and 9.6W/m(2), respectively, and 2) a climate change (CC) scenario, working at 24°C and 24W/m(2), respectively. As expected, low molecular weight PAHs were rapidly volatilized when increasing both temperature and light intensity. In contrast, medium and high molecular weight PAHs presented different photodegradation rates in soils with different texture, which was likely related to the amount of photocatalysts contained in both soils. In turn, the hydrogen isotopic composition of some of the PAHs under study was also investigated to verify any degradation process. Hydrogen isotopes confirmed that benzo(a)pyrene is degraded in both B and CC scenarios, not only under light but also in the darkness, revealing unknown degradation processes occurring when light is lacking. Potential generation pathways of PAH photodegradation by-products were also suggested, being a higher number of metabolites formed in the CC scenario. Consequently, in a more or less near future, although humans might be less exposed to PAHs, they could be exposed to new metabolites of these pollutants, which might be even more toxic. Copyright © 2016. Published by Elsevier Ltd.
    Thematic Areas: Zootecnia / recursos pesqueiros Saúde coletiva Química Medicina iii Medicina ii Medicina i Interdisciplinar Geociências General medicine General environmental science Farmacia Environmental sciences Environmental science (miscellaneous) Environmental science (all) Engenharias iv Engenharias ii Engenharias i Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Biotecnología Biodiversidade Astronomia / física Administração pública e de empresas, ciências contábeis e turismo
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 01604120
    Author's mail: marti.nadal@urv.cat montserrat.marques@urv.cat joseluis.domingo@urv.cat marti.nadal@urv.cat montserrat.mari@urv.cat
    Author identifier: 0000-0002-0217-4827 0000-0001-6302-8578 0000-0001-6647-9470 0000-0002-0217-4827 0000-0001-8971-3856
    Record's date: 2024-08-03
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0160412016300198?via%3Dihub
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Environment International. 89-90 (): 155-165
    APA: Marques, Montse; Mari, Montse; Audi-Miro, Carme; Sierra, Jordi; Soler, Albert; Nadal, Marti; Domingo, Jose L.; (2016). Climate change impact on the PAH photodegradation in soils: Characterization and metabolites identification. Environment International, 89-90(), 155-165. DOI: 10.1016/j.envint.2016.01.019
    Article's DOI: 10.1016/j.envint.2016.01.019
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    Publication Type: Journal Publications
  • Keywords:

    Environmental Science (Miscellaneous),Environmental Sciences
    Transport
    Temperature
    Services
    Products
    Polycyclic aromatic-hydrocarbons
    Polycyclic aromatic hydrocarbons (pahs)
    Photolysis
    Photodegradation
    Persistent organic pollutants
    Metabolites
    Mediterranean basin
    Isotope fractionation
    Hydrogen isotopes
    Degradation
    Climate change
    photodegradation
    metabolites
    hydrogen isotopes
    climate change
    Zootecnia / recursos pesqueiros
    Saúde coletiva
    Química
    Medicina iii
    Medicina ii
    Medicina i
    Interdisciplinar
    Geociências
    General medicine
    General environmental science
    Farmacia
    Environmental sciences
    Environmental science (miscellaneous)
    Environmental science (all)
    Engenharias iv
    Engenharias ii
    Engenharias i
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Biotecnología
    Biodiversidade
    Astronomia / física
    Administração pública e de empresas, ciências contábeis e turismo
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