A multi-molecular marker assessment of organic pollution in shore sediments from the Rio de la Plata Estuary, SW Atlantic

Autor(es)

Venturini, Natalia ^{[1, 2]} ; Bicego, Marcia C. ^[2] ; Taniguchi, Satie ^[2] ; Sasaki, Silvio T. ^[2] ; Garcia-Rodriguez, Felipe ^[1] ; Brugnoli, Ernesto ^[1] ; Muniz, Pablo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Republica, Fac Ciencias, Inst Ecol & Ciencias Ambientales, Oceanog & Ecol Marina, Montevideo 11400 - Uruguay

^[2] Univ Sao Paulo IOUSP, Inst Oceanog, BR-05508120 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Marine Pollution Bulletin; v. 91, n. 2, p. 461-475, FEB 28 2015.
• Citações Web of Science: 28

Resumo

Organic pollution was evaluated in surface sediments along the middle portion of the Rio de la Plata Estuary, SW Atlantic. A multi-molecular marker approach was performed to identify major sources of organic compounds using diagnostic indices. The relative contribution of different sources of hydrocarbons was quantified by source apportionment employing Principal Component Analysis/Multiple Linear Regression (PCA/MLR) as chemometric technique. All molecular markers indicated high chronic organic pollution in the stations of Montevideo Bay. Main sources of aliphatic and polycyclic aromatic hydrocarbons were petroleum inputs and combustion, due to oil transport and refinement, harbour activities and vehicular emissions. Major sources of linear alkylbenzenes and steroids were industrial and domestic sewage. Although, significant anthropogenic inputs, a natural footprint of terrestrial higher plants contribution was recognized. Multi-molecular marker and comprehensive assessments can improve the establishment of more precise regulation actions to reduce pollution levels. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 12/20375-6 - Biomarcadores geoquímicos de processos recentes e paleoambientais no Estuário de Caravelas, BA, Brasil: implicações na avaliação do registro geolipídico sedimentar
• Beneficiário: Natalia Venturini Caballero
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado