Organic contaminants and trace metals in the western South Atlantic upper continental margin: Anthropogenic influence on mud depocenters

Autor(es):Mostrar menos -

Santos, Felipe R. ^[1] ; Neves, Patricia A. ^[1] ; Kim, Bianca S. M. ^[1] ; Taniguchi, Satie ^[1] ; Lourenco, Rafael A. ^[1] ; Timoszczuk, Cristian T. ^[1] ; Sotao, Basilio M. T. ^[1] ; Montone, Rosalinda C. ^[1] ; Figueira, Rubens C. L. ^[1] ; Mahiques, Michel M. ^[1] ; Bicego, Marcia C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Oceanog, Praca Oceanog 191, BR-05508120 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Marine Pollution Bulletin; v. 154, MAY 2020.
• Citações Web of Science: 0

Resumo

Trace metals, dichloro-diphenyl-trichloroethane (DDTs), polychlorinated biphenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs) were quantified in surface sediments from mud depocenters located in the western South Atlantic upper continental margin. There was no anthropogenic trace metal pollution observed, and the higher As values were attributed to high CaCO3 content in the area. The results indicate PCB sources associated with long-range atmospheric transport in addition to past DDT use for agriculture and pest control. PAHs were mainly originated from biomass and fossil fuel combustion, and their distribution is in alignment with the riverine runoff influence in southern region, which is transported towards the northern regions by coastal currents. Higher concentrations of 2-3 ring PAHs and DDTs in shallow and northern stations indicate a coastal influence. This work presents baseline information on the extent of anthropogenic influence in mud depocenters located in the western South Atlantic upper continental margin, showing these locations as potential source to sink of anthropogenic contaminants. (AU)

• Processo FAPESP: 15/17763-2 - Mudbelts do Sul e Sudeste do Brasil: implicações sobre as influências antrópicas no ambiente marinho
• Beneficiário: Márcia Caruso Bícego
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 16/18348-1 - EMU concedido no processo 2015/17763-2: cromatógrafo a gás com detector de massas triplo quadrupolo (GC/MS/MS)
• Beneficiário: Márcia Caruso Bícego
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários