Trace elements and arsenic speciation in Paracentrotus lividus from North-West Mediterranean Sea

Author:

LEUFROY Axelle1ORCID,Bouchoucha Marc2,Rivière Gilles3,Guérin Thierry4,Jitaru Petru5

Affiliation:

1. Anses

2. Ifremer Laboratoire environnement Ressources Provence-Azur-Corse

3. Anses Risk Assessment Department

4. Anses Directorate of Strategy and Programmes

5. Anses Laboratory for Food Safety

Abstract

Abstract Levels of 14 trace elements (Al, Ti, V, Cr, Mn, Co, Ni, Zn, As, Se, Cd, Sn, Hg and Pb) and 5 arsenic species (arsenite/As(III), arsenate/As(V), monomethylarsonic acid/MA, dimethylarsinic acid/DMA and arsenobetaine/AsB) were assessed in the gonads of sea urchin samples (Paracentrotus lividus) from North-West Mediterranean Sea (French coast). The samples were collected from 13 sites characterized by different types and levels of chemical contamination. Trace elements levels were measured by inductively coupled plasma-mass spectrometry (ICP-MS) following microwave (acid) digestion in a closed system, whereas As speciation analysis was carried out by ion-exchange liquid chromatography coupled with ICP-MS after microwave assisted extraction. High levels of trace elements were found in sea urchins sampled from Corsica whereas the samples from Théoule were found to be the least contaminated. From all the analyzed urchin samples, none showed Cd, Hg or Pb concentrations above the regulatory levels set by the European Community (EC) No. 1881/2006 for seafood or bivalve mollusks. Regardin arsenic specation, AsB was confirmed to be the predominant species. Inorganic As (As(III) + As(V)) was mainly constituted by As(III), which was quantified in all samples. Methylated As forms (MA and DMA) represent 9 to 23% of the total As.

Publisher

Research Square Platform LLC

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4. Coastal progradation and very early diagenesis of ultramafic sands as a result of rubble discharge from asbestos excavations (northern Corsica, western Mediterranean);Bernier P;Mar Geol,1997

5. Multiple effects of harvesting on populations of the purple sea urchin Paracentrotus lividus in north Portugal;Bertocci I;" Fisheries Research,2014

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