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Holocene background concentrations and actual enrichment factors of metals in sediments from Ria Formosa, Portugal

2019-12Journal article Restricted access
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dc.contributor.authorMendes da Silva de Sousa, Carlos A
dc.contributor.authorDelgado, Joaquin
dc.contributor.authorSzalaj, Dorota
dc.contributor.authorBoski, T.
dc.date.accessioned2020-07-24T10:50:49Z
dc.date.available2020-07-24T10:50:49Z
dc.date.issued2019-12
dc.description.abstractMetal history in a natural system was described since the early Holocene by analysing the preserved subsurface sediment record and present-day surface sediments. Normalized geochemical data from six sediment cores (129 samples) was compared with 28 surface samples. Pre-anthropic sedimentary environments allowed the definition of local natural Background Values. Enrichment Factors were then used for elements discrimination in terms of natural and anthropogenic inputs to the system. While subsurface results displayed a similar behaviour in all cores, pointing to largely undisturbed system, surface sediments show significant contamination, with high enrichment factors for As, Cu, Pb, and Zn. Other metal pollutants have generally low enrichment values, suggesting natural conditions. Surface results were reproduced as metal enrichment maps which evidenced anthropogenic sources in specific locations. This work reveals the importance of combining subsurface and surface geochemical data with mapping techniques in order to better evaluate the environmental quality of a natural system.
dc.description.sponsorshipSIHER project [PTDC/CTE-GIX112236/2009]
dc.description.sponsorshipEU Erasmus Mundus Joint Doctorate in Marine and Coastal Management (MACOMA) fellowship grant, under University of Algarve
dc.description.sponsorshipEU Erasmus Mundus Joint Doctorate in Marine and Coastal Management (MACOMA) fellowship grant, under University of Cadiz
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.marpolbul.2019.110533
dc.identifier.issn0025-326X
dc.identifier.urihttp://hdl.handle.net/10400.1/14157
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.subjectGeochemical base-lines
dc.subjectSurface waters
dc.subjectHeavy-metals
dc.subjectCoastal sediments
dc.subjectMarine sediments
dc.subjectTrace elements
dc.subjectEstuary
dc.subjectCd
dc.subjectSw
dc.subjectRiver
dc.subjectGeochemistry
dc.subjectMetal contamination
dc.subjectSediments
dc.subjectAnthropogenic sources
dc.subjectGIS-analysis
dc.subjectRia Formosa
dc.titleHolocene background concentrations and actual enrichment factors of metals in sediments from Ria Formosa, Portugal
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPageUNSP 110533
oaire.citation.titleMarine Pollution Bulletin
oaire.citation.volume149
person.familyNameMendes da Silva de Sousa
person.familyNameBoski
person.givenNameCarlos A
person.givenNameTomasz
person.identifier.ciencia-idBF10-E2DF-06BB
person.identifier.ciencia-id1416-B317-51D1
person.identifier.orcid0000-0003-4616-2278
person.identifier.orcid0000-0003-2462-4179
person.identifier.scopus-author-id37015016500
person.identifier.scopus-author-id6602267486
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicationcbaa20c3-5e33-4112-9d1d-c645c9078aa3
relation.isAuthorOfPublicationa857b0c7-90ab-473b-a62e-e92b452e604d
relation.isAuthorOfPublication.latestForDiscoverya857b0c7-90ab-473b-a62e-e92b452e604d

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