title: Environmental availability of potentially toxic elements in estuarine sediments of the Cananéia-Iguape coastal system, Southeastern Brazil.
abstract: The Cananéia-Iguape system is located in a Southeastern Brazilian coastal region, acknowledged by UNESCO as Biosphere Reserve of the Atlantic Rainforest. This system underwent important environmental changes due to the opening of the artificial channel of Valo Grande and by past intensive Pb ore mining activities. In view of this scenario, this study evaluated Cu, Pb and Zn availability in sediments from Cananéia-Iguape system, based on the content associated with the main components of the sediments. Moreover, in order to assess local contamination, the metals' contents were compared to Canadian quality guidelines, the past levels of metals preceding the mining activities and background sediment values. Concerning Cu and Zn in a state of chemical remobilization, both elements would possibly present no harm to the local communities. However, Pb available content exceeded the comparison values in various sampling sites, suggesting the need of monitoring regarding its bioavailability.
authors.affiliation: Instituto Oceanográfico da Universidade de São Paulo (IO-USP), Pça. do Oceanográfico, 191, Butantã, SP 05508 120, Brazil. Electronic address: ktramonte@usp.br.
authors.forename: Keila Modesto
authors.initials: KM
authors.lastname: Tramonte
authors.affiliation: Instituto Oceanográfico da Universidade de São Paulo (IO-USP), Pça. do Oceanográfico, 191, Butantã, SP 05508 120, Brazil.
authors.forename: Rubens Cesar Lopes
authors.initials: RCL
authors.lastname: Figueira
authors.affiliation: Instituto Oceanográfico da Universidade de São Paulo (IO-USP), Pça. do Oceanográfico, 191, Butantã, SP 05508 120, Brazil.
authors.forename: Paulo Alves
authors.initials: PA
authors.lastname: de Lima Ferreira
authors.affiliation: Instituto Oceanográfico da Universidade de São Paulo (IO-USP), Pça. do Oceanográfico, 191, Butantã, SP 05508 120, Brazil; Mestrado em Cidades Inteligentes e Sustentáveis da Universidade Nove de Julho (UNINOVE), Av. Francisco Matarazzo, 612, prédio C, 2° andar, Água Branca, São Paulo, SP 05001 100, Brazil.
authors.forename: Andreza Portella
authors.initials: AP
authors.lastname: Ribeiro
authors.affiliation: Instituto Oceanográfico da Universidade de São Paulo (IO-USP), Pça. do Oceanográfico, 191, Butantã, SP 05508 120, Brazil.
authors.forename: Miriam Fernanda
authors.initials: MF
authors.lastname: Batista
authors.affiliation: Instituto Oceanográfico da Universidade de São Paulo (IO-USP), Pça. do Oceanográfico, 191, Butantã, SP 05508 120, Brazil.
authors.forename: Michel Michaelovitch
authors.initials: MM
authors.lastname: de Mahiques
mesh_terms: D001938:Brazil; D002170:Canada; D003300:Copper / Q000032:analysis; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D007854:Lead / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis*; D008906:Mining; D014874:Water Pollutants, Chemical / Q000032:analysis*; D060753:Water Quality; D015032:Zinc / Q000032:analysis
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D007854:Lead; D003300:Copper; D015032:Zinc
keywords: Metals; Mining; Sequential extraction; Valo Grande