Roussiez, Vincent and Ludwig, Wolfgang and Probst, Jean-Luc and Monaco, André Background levels of heavy metals in surficial sediments of the Gulf of Lions (NW Mediterranean): An approach based on 133Cs normalization and lead isotope measurements. (2005) Environmental Pollution, vol. 1 (n° 1). pp. 167-177. ISSN 0269-7491
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Official URL: http://dx.doi.org/10.1016/j.envpol.2005.02.004
This paper presents an attempt to reach natural background levels of heavy metals in surficial sediments of the Gulf of Lions(NW Mediterranean). To correct for the grain-size effect, normalization procedures based on a clay mineral indicator element are commonly used, after a first grain size separation by sieving. In our study, we tested the applicability of this method with respect to commonly used normalizer elements, and found that stable Cs shows the best ability to reflect the fine sediment fraction. Background levels were successfully reached for Co, Cr, Cu, Ni and Pb, compared to various literature references. Nevertheless, in the case of lead, the normalized data depicted a general enrichment in all samples, and the natural levels could only be reached when concentrations were corrected for the atmospheric contribution by analysing lead isotope ratios. Also for Zn, a general enrichment was found in our samples, although less important.
|Additional Information:||Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Environmental Pollution website : http://www.sciencedirect.com/science/journal/02697491|
|Audience (journal):||International peer-reviewed journal|
|Institution:|| Université de Toulouse > Institut National Polytechnique de Toulouse - INPT|
French research institutions > Institut de Recherche pour le Développement - IRD
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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|Deposited By:||Florence Amor|
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