Details

Autor(en) / Beteiligte

• Garcia, Carlos Alexandre Borges
• Monteiro, Adnívia Santos Costa
• da Costa, Silvânio Silvério Lopes
• de Macedo Arguelho, Maria de Lara Palmeira
• Araújo, Rennan Geovanny Oliveira
• Carneiro, Maria Eulália Rocha
• do Patrocínio Hora Alves, José

Titel

Geochemistry of trace metals in surface sediments from the continental slope of the states of Sergipe and Alagoas, Northeastern Brazil

Ist Teil von

• Marine pollution bulletin, 2023-01, Vol.186, p.114472, Article 114472

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2023

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• Geochemical analyses were used to determine the origin and identify the main factors that lead to the metal trace distribution on the surface sediments from the continental slope of Sergipe in Brazil. Sediment samples were collected during the dry and rainy periods, from 36 sampling points distributed at water depths from 400 to 3000 m. In general, no effect of seasonality was observed on the metal concentrations and no significant differences were observed between the depth ranges. The correlation analysis indicated the continental origin as the most predominant, followed by authigenic deposition. Anthropogenic enrichment was not noted, nor was the possibility of adverse aquatic biota effects. The results made it possible to understand the contribution of rivers in the transport and transfer of particulate matter to the coastal region, in addition to providing new information on the content of trace metals in tropical Atlantic sediments. [Display omitted] •The distribution of trace metals did not exhibit any significant difference with depth.•No seasonality effect was noted.•Metal geochemistry was studied in the sediment from the continental slope.•Enrichment factor indicated the non-occurrence of anthropogenic enrichment.•The sediment quality assessed rarely present adverse effects on aquatic biota.