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Mar Pollut Bull

Title:		"Trace metal bioavailability in sediments from a reference site, Ribeira Bay, Brazil"
Author(s):		Chiappetta JM; Machado W; Santos JM; Lessa JA;
Address:		"Departamento de Quimica Geral e Inorganica, Instituto de Quimica, Universidade do Estado do Rio de Janeiro, 20550-900 Rio de Janeiro, RJ, Brazil. Electronic address: jninemariano@ig.com.br. Departamento de Geoquimica, Instituto de Quimica, Universidade Federal Fluminense, Niteroi, RJ 24020-150, Brazil. Electronic address: wmachado@geoq.uff.br. Departamento de Quimica Geral e Inorganica, Instituto de Quimica, Universidade do Estado do Rio de Janeiro, 20550-900 Rio de Janeiro, RJ, Brazil. Electronic address: joanamts.uerj@gmail.com. Departamento de Quimica Geral e Inorganica, Instituto de Quimica, Universidade do Estado do Rio de Janeiro, 20550-900 Rio de Janeiro, RJ, Brazil. Electronic address: josane@uerj.br"
Journal Title:		Mar Pollut Bull
Year:		2016
Volume:		20160315
Issue:		1-Feb
Page Number:		395 - 399
DOI:		10.1016/j.marpolbul.2015.12.037
ISSN/ISBN:		1879-3363 (Electronic) 0025-326X (Linking)
Abstract:		"Surface sediments were collected near potential contamination sources impacting Ribeira Bay (Brazil), a system considered as a 'reference site' for trace metals. Physicochemical properties (pH and Eh), grain size and concentrations of total organic carbon (TOC), total phosphorus (TP), acid-volatile sulfides (AVS) and simultaneously-extracted metals (Fe, Mn, Cd, Cu, Ni, Pb and Zn) were analyzed. Although relatively low metal concentrations were found, correlations of Zn and Ni with high TP levels suggested an association with sewage inputs, while other metals presented associations with specific geochemical carriers (TOC, Fe and Mn compounds). AVS levels exceeding those of the sums of Cd, Cu, Ni, Pb and Zn (SigmaSEM) by at least one order of magnitude and TOC-normalized differences between SigmaSEM and AVS ((SigmaSEM-AVS)/fOC) near to or below than -200mumolgOC(-1) indicated that there were sufficient AVS and TOC levels to control trace metal bioavailability in sediment pore water"
Keywords:		"Acids Bays/*chemistry Biological Availability Brazil Carbon/analysis/chemistry Environmental Monitoring/*methods Geologic Sediments/*chemistry Metals, Heavy/*analysis/chemistry Phosphorus/analysis/chemistry Sulfides/analysis/chemistry Surface Properties T;"
Notes:		"MedlineChiappetta, Janine M M Machado, Wilson Santos, Joana M Lessa, Josane A eng England 2016/03/20 Mar Pollut Bull. 2016 May 15; 106(1-2):395-9. doi: 10.1016/j.marpolbul.2015.12.037. Epub 2016 Mar 15"