Geochemical behavior, environmental availability, and reconstruction of historical trends of Cu, Pb, and Zn in sediment cores of the Cananéia-Iguape coastal system, Southeastern Brazil

Keila Modesto Tramonte; Rubens Cesar Lopes Figueira; Alessandra Pereira Majer; Paulo Alves de Lima Ferreira; Miriam Fernanda Batista; Andreza Portella Ribeiro; Michel Michaelovitch de Mahiques

doi:10.1016/j.marpolbul.2017.11.016

Geochemical behavior, environmental availability, and reconstruction of historical trends of Cu, Pb, and Zn in sediment cores of the Cananéia-Iguape coastal system, Southeastern Brazil

Mar Pollut Bull. 2018 Feb:127:1-9. doi: 10.1016/j.marpolbul.2017.11.016. Epub 2017 Nov 22.

Authors

Keila Modesto Tramonte¹, Rubens Cesar Lopes Figueira², Alessandra Pereira Majer³, Paulo Alves de Lima Ferreira², Miriam Fernanda Batista², Andreza Portella Ribeiro⁴, Michel Michaelovitch de Mahiques⁵

Affiliations

¹ Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, Butantã, 05508-120 São Paulo, SP, Brazil. Electronic address: ktramonte@usp.br.
² Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, Butantã, 05508-120 São Paulo, SP, Brazil.
³ Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, Butantã, 05508-120 São Paulo, SP, Brazil; Faculdade Estácio Euro-Panamericana de Humanidades e Tecnologias, R. Howard Archibal Acheson Júnior, 393 - Jardim da Glória, 06711-280 Cotia, SP, Brazil; Centro Universitário Estácio de São Paulo, Av. dos Remédios, 810, Vila dos Remédios, 05107-001 São Paulo, SP, Brazil.
⁴ Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, Butantã, 05508-120 São Paulo, SP, Brazil; Universidade Nove de Julho (UNINOVE), Mestrado em Cidades Inteligentes e Sustentáveis, Av. Francisco Matarazzo, 612, prédio C, 2° andar, Água Branca, São Paulo, SP, Brazil.
⁵ Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, Butantã, 05508-120 São Paulo, SP, Brazil; Universidade de São Paulo, Instituto de Energia e Ambiente, Avenida Professor Luciano Gualberto, 1289, Cidade Universitária, 05508-010 São Paulo, SP, Brazil.

PMID: 29475640
DOI: 10.1016/j.marpolbul.2017.11.016

Abstract

The Cananéia-Iguape system is located in a coastal region of southeastern Brazil, recognized by UNESCO as an Atlantic Forest Biosphere Reserve. This system has suffered substantial environmental impacts due to the opening of an artificial channel and by past intensive mining activities. In this paper was performed the sequential chemical extraction of Cu, Pb, and Zn, on previously described sediment cores, and the statistical treatment of the data, allowing to estimate the remobilization geochemical behavior, the available content and the trend of accumulation between 1926 and 2008. The maximum available level (sum of all mobile fraction) were, in mgkg^-1, 18.74 for Cu, 177.55 for Pb and 123.03 for Zn. Considering its environmental availability, Pb remains a concern in the system. It was possible to recognize the anthropic contribution of Pb, being the mining activities considered the only potential source of this metal in the region.

Keywords: Metals; Mining; Sedimentation rate; Sediments; Sequential extraction; Valo Grande channel.

MeSH terms

Brazil
Copper / analysis
Environmental Monitoring / methods*
Geologic Sediments / chemistry*
Lead / analysis
Metals, Heavy / analysis*
Mining
Rivers / chemistry*
Water Pollutants, Chemical / analysis*
Zinc / analysis

Substances

Metals, Heavy
Water Pollutants, Chemical
Lead
Copper
Zinc