Please use this identifier to cite or link to this item: http://repositorio.ufc.br/handle/riufc/67806
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dc.contributor.authorPaula Filho, Francisco José de-
dc.contributor.authorMarins, Rozane Valente-
dc.contributor.authorSantos, Deivid Vitor-
dc.contributor.authorPereira Junior, Raí Felipe-
dc.contributor.authorMenezes, Jorge Marcell Coelho-
dc.contributor.authorGastão, Francisco Gleidson Costa da-
dc.contributor.authorGuzzi, Anderson-
dc.contributor.authorTeixeira, Raimundo Nonato Pereira-
dc.date.accessioned2022-08-22T18:43:45Z-
dc.date.available2022-08-22T18:43:45Z-
dc.date.issued2021-
dc.identifier.citationPAULA FILHO, Francisco José de; MARINS, Rozane Valente; SANTOS, Deivid Vitor; PEREIRA JUNIOR, Raí Felipe; MENEZES, Jorge Marcell Coelho; GASTÃO, Francisco Gleidson Costa da; GUZZI, Anderson; TEIXEIRA, Raimundo Nonato Pereira. Assessment of heavy metals in sediments of the Parnaíba River Delta in the semi-arid coast of Brazil. Environmental Earth Sciences, United States, v. 80, p. 167, 2021.pt_BR
dc.identifier.issn2769-2310-
dc.identifier.urihttp://www.repositorio.ufc.br/handle/riufc/67806-
dc.description.abstractStudies related to heavy metal concentrations in coastal sediments are important to monitor and assess environmental health of estuarine ecosystems. Twenty-eight samples from Parnaíba River Delta, the largest open-ocean delta in the Americas, northeastern of Brazil were tested for heavy metals concentrations (Cd, Cr, Cu, Mn, Ni, Pb, Zn, Al and Fe), grain-size and easily oxidizable carbon. The relations of the heavy metals with sediment composition were evaluated using a multivariate statistical analysis. Sediment pollution assessment was carried out by enrichment factor (EF), geoaccumulation index (Igeo), contamination factor (CF) and potential ecological risk index (PERI). The average concentrations were 0.50±0.09 mg Cd kg−1, 6.95±2.13 mg Pb kg−1, 19.02±8.75 mg Cu kg−1, 23.20±5.04 mg Ni kg−1, 33.52±6.82 mg Cr kg−1, 43.99±7.47 mg Zn kg−1, 165.73±86.71 mg Mn kg−1, 2.93±0.89% to Fe and 3.78±1.17% to Al. The results indicate lower concentrations of heavy metals relative to limit concentrations defned by the Brazilian regulatory framework. The multivariate analysis refected the binding of heavy metals to clay minerals and organic carbon. The diferent geochemical indices indicated sediments minimally enriched by metals and a low potential ecological risk level. Our assessment confrms the pristine conditions of Parnaíba Delta protected area to heavy metal contamination, except Igaraçú channel near Parnaíba city.pt_BR
dc.language.isoenpt_BR
dc.publisherEnvironmental Earth Sciencespt_BR
dc.subjectHeavy metalspt_BR
dc.subjectEnrichment factorpt_BR
dc.subjectPollutionpt_BR
dc.subjectMetais pesadospt_BR
dc.subjectFator de enriquecimentopt_BR
dc.subjectPoluiçãopt_BR
dc.titleAssessment of heavy metals in sediments of the Parnaíba River Delta in the semi-arid coast of Brazilpt_BR
dc.typeArtigo de Periódicopt_BR
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