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Sources and distribution of organic matter and polycyclic aromatic hydrocarbons in sediments of the southwestern Portuguese shelf

2025-01Journal article Open access
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dc.contributor.authorMil-Homens, Mário
dc.contributor.authorGonçalves, Sofia
dc.contributor.authorCortés, Alejandro
dc.contributor.authorvan Drooge, Barend L.
dc.contributor.authorStigter, Henko de
dc.contributor.authorGrimalt, Joan O.
dc.contributor.authorCordeiro, Lívia
dc.contributor.authorSantos, Miguel M.
dc.contributor.authorAlmeida, C. Marisa R.
dc.contributor.authorCaetano, Miguel
dc.date.accessioned2025-01-09T11:17:29Z
dc.date.available2025-01-09T11:17:29Z
dc.date.issued2025-01
dc.description.abstractTotal organic carbon (Corg), total nitrogen (Ntot), Corg/Ntot, δ13Corg, δ15N, calcium carbonate (CaCO3), and grain size were analyzed in 70 surface samples and 19 short cores from the southwestern Portuguese shelf. Perylene and USEPA-16 PAHs were quantified in a subset of these samples. The findings suggest that organic matter derives from a mix of terrestrial and marine sources, outlined by Corg, Ntot, and isotopic signatures. Perylene combined with δ13Corg was used to identify the main PAH sources in these environments. Diagnostic perylene ratios revealed contributions from natural sources in the Tagus region and contaminated materials from the Sado Dredged Disposal Site, with additional perylene in Sines linked to atmospheric deposition of pyrogenic sources. A significant correlation between perylene and USEPA-16 PAHs indicates natural and anthropogenic inputs from the Tagus. This multiproxy approach—combining USEPA-16ΣPAHs, perylene, and δ13Corg—offers insights for assessing environmental risks and guiding marine environmental management according to the MSFD.eng
dc.description.sponsorshipMAR-01.04.02-FEAMP-0013; ALT20-03-0145-FEDER-000013; PINFRA/22157/2016-EMSO-PT;
dc.identifier.doi10.1016/j.marpolbul.2024.117303
dc.identifier.issn0025-326X
dc.identifier.urihttp://hdl.handle.net/10400.1/26596
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationTsunami hazard assessment of the Lisbon city associated to the Tagus delta landslide.
dc.relationInterdisciplinary Centre of Marine and Environmental Research
dc.relationAlgarve Centre for Marine Sciences
dc.relationInterdisciplinary Centre of Marine and Environmental Research
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofMarine Pollution Bulletin
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMarine sediments
dc.subjectOrganic matter composition
dc.subjectStable carbon and nitrogen isotopes
dc.subjectPerylene
dc.subjectUSEPA-16ΣPAHs
dc.titleSources and distribution of organic matter and polycyclic aromatic hydrocarbons in sediments of the southwestern Portuguese shelfeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleTsunami hazard assessment of the Lisbon city associated to the Tagus delta landslide.
oaire.awardTitleInterdisciplinary Centre of Marine and Environmental Research
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleInterdisciplinary Centre of Marine and Environmental Research
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCTA-GEO%2F31885%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04423%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04423%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.startPage117303
oaire.citation.titleMarine Pollution Bulletin
oaire.citation.volume210
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCordeiro
person.givenNameLívia
person.identifier2092376
person.identifier.ciencia-id9F1D-C3E6-956E
person.identifier.orcid0000-0002-1601-8825
person.identifier.ridF-1070-2015
person.identifier.scopus-author-id43261084700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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