%0 Journal Article
%T Multi-elemental contamination and historic record in sediments from the Santos-Cubat£¿o Estuarine System, Brazil
%A Luiz-Silva
%A Wanilson
%A Machado
%A Wilson
%A Matos
%A Rosa H. R.
%J Journal of the Brazilian Chemical Society
%D 2008
%I Sociedade Brasileira de Qu¨ªmica, SBQ
%R 10.1590/S0103-50532008000800008
%X this paper records for the first time the contamination history and identifies the sources of 38 elements in sediments from the santos-cubat£¿o estuarine system (se brazil), at one of the most industrialized areas in latin america. the compositions of samples from a 260 cm long sediment core collected in the morr£¿o river estuary were determined by icp-ms. enrichment factors, principal component analysis, correlation matrixes, and the characterization of geochemical signatures permitted a consistent data evaluation. contaminant elements such as cr, mn, ni, zn, ga, ag, cd, sn, sb, pb, and bi were associated with steel plant-derived fe concentrations, while be, ca, sc, co, cu, sr, y, zr, nb, hf, ta, th, and u were associated with fertilizer industry-derived p concentrations. an overlap of sedimentary fe distribution and local steel plant production indicated that fe is a reliable marker of the contamination history, allowing the estimation of sedimentation rates over a period of 45 years of industrial activities.
%K intertidal sediments
%K pollution
%K trace-elements
%K contamination source
%K industrial contamination.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-50532008000800008&lng=en&nrm=iso&tlng=en