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A critical examination of the possible application of zinc stable isotope ratios in bivalve mollusks and suspended particulate matter to trace zinc pollution in a tropical estuary

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Title: A critical examination of the possible application of zinc stable isotope ratios in bivalve mollusks and suspended particulate matter to trace zinc pollution in a tropical estuary
Authors: Araujo, D
Machado, W
Weiss, D
Mulholland, DS
Boaventura, GR
Viers, J
Gamier, J
Dantas, EL
Babinski, M
Item Type: Journal Article
Abstract: The application of zinc (Zn) isotopes in bivalve tissues to identify zinc sources in estuaries was critically assessed. We determined the zinc isotope composition of mollusks (Crassostrea brasiliana and Perna perna) and suspended particulate matter (SPM) in a tropical estuary (Sepetiba Bay, Brazil) historically impacted by metallurgical activities. The zinc isotope systematics of the SPM was in line with mixing of zinc derived from fluvial material and from metallurgical activities. In contrast, source mixing alone cannot account for the isotope ratios observed in the bivalves, which are significantly lighter in the contaminated metallurgical zone (δ66ZnJMC = +0.49 ± 0.06‰, 2σ, n = 3) compared to sampling locations outside (δ66ZnJMC = +0.83 ± 0.10‰, 2σ, n = 22). This observation suggests that additional factors such as speciation, bioavailability and bioaccumulation pathways (via solution or particulate matter) influence the zinc isotope composition of bivalves.
Issue Date: 9-Apr-2017
Date of Acceptance: 1-Apr-2017
URI: http://hdl.handle.net/10044/1/50502
DOI: https://dx.doi.org/10.1016/j.envpol.2017.04.011
ISSN: 0269-7491
Publisher: Elsevier
Start Page: 41
End Page: 47
Volume: 226
Copyright Statement: © 2017 Published by Elsevier Ltd. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Commission of the European Communities
Commission of the European Communities
Commission of the European Communities
Funder's Grant Number: PIEF-GA-2011-299473
295091
PIEF-GA-2012-329878
Keywords: Science & Technology
Life Sciences & Biomedicine
Environmental Sciences
Environmental Sciences & Ecology
Metal isotopes
Zinc
Bioaccumulation
Environmental contamination
Coastal zones
ZN ISOTOPES
SEPETIBA BAY
SE BRAZIL
CD
SIGNATURES
FRACTIONATION
CONTAMINATION
ACCUMULATION
RHIZOPHORAE
RELEVANCE
Animals
Bivalvia
Brazil
Environmental Monitoring
Environmental Pollution
Estuaries
Isotopes
Metallurgy
Particulate Matter
Water Pollutants, Chemical
MD Multidisciplinary
Publication Status: Published
Appears in Collections:Faculty of Engineering
Earth Science and Engineering



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