Historical records and spatial distribution of high hazard PCBs levels in sediments around a large South American industrial coastal area (Santos Estuary, Brazil)

Autor(es)

de Souza, Amanda Camara ^[1] ; Taniguchi, Satie ^[2] ; Lopes Figueira, Rubens Cesar ^[2] ; Montone, Rosalinda Carmela ^[2] ; Bicego, Marcia Caruso ^[2] ; Martins, Cesar C. ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Univ Fed Parana, Programa Posgrad Sistemas Costeiros & Ocean PGSIS, Caixa Postal 61, BR-83255976 Pontal Do Parana, PR - Brazil

^[2] Univ Sao Paulo, Inst Oceanog, Praca Oceanog 191, BR-05508900 Sao Paulo, SP - Brazil

^[3] Univ Fed Parana, Ctr Estudos Mar, Caixa Postal 61, BR-83255976 Pontal Do Parana, PR - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF HAZARDOUS MATERIALS; v. 360, p. 428-435, OCT 15 2018.
• Citações Web of Science: 4

Resumo

The depositional history of polychlorinated biphenyls (PCBs) was studied from surficial sediments and three sediment cores sampled in the Santos Estuary, an important industrial and urban centre in South America. The maximum concentration (190.7 ng g(-1) dry weight) and inventory (295.50 ng cm(-2)) were detected in sediments related to the 1980s, representing a ten-year delay of the emission peak in Brazil. PCB consumption, the congener patterns, and multivariate statistical analyses indicated that the levels started to increase with the intensification of regional urban and industrial development that continued to interfere in the magnitude of input during the past 50 years. In addition, the risk assessment indicates that levels observed in most of the samples are in a range capable of producing ecological risks to the marine biota. This study provides the first estimates of historic sediments PCB inventories in the Southwestern Atlantic, contributing data for regional and global management and highlighting the role of sediment as a compartment for permanently storing POPs and the risks involved in their resuspension, especially in regions that are constantly dredged such as the Santos Estuary. (AU)

• Processo FAPESP: 01/10704-8 - Marcadores orgânicos geoquímicos em sedimentos da Baía de Santos, São Paulo: um histórico de poluentes químicos no ambiente marinho
• Beneficiário: Cesar de Castro Martins
• Modalidade de apoio: Bolsas no Brasil - Doutorado