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Environmental Monitoring and Assessment

, Volume 185, Issue 8, pp 6783–6792 | Cite as

Heavy metal content in oysters (Crassostrea gigas) cultured in the Ebro Delta in Catalonia, Spain

  • Victoria OchoaEmail author
  • Carlos Barata
  • M. Carmen Riva
Article

Abstract

The aim of this study was to determine heavy metal content (As, Cd, Cu, Hg, Cd, Pb, and Zn) in oysters transplanted in Ebro Delta bays (Alfacs and Fangar) where oysters are traditionally cultured for human consumption. Metal body burdens were monitored weekly during the period of maximal agriculture activity from May to June in 2008 and 2009. Results indicate that regardless of the high levels of metals reported in biota living in Ebro River, metal levels in oysters from both bays were similar to those found in unpolluted areas and far below the maximum limits of tolerance recommended by the European Commission. Nevertheless, metal accumulation patterns in oysters differentiate two sources of pollution: one coming from agriculture activities within the Ebro’s delta for As, Cd, Cu, and Zn and other coming from Ebro River probably related to industrial activities upstream (Hg, Pb) or to lead shot pellets form hunting activities (Pb). Reported results, thus, are in concern with previous studies and indicate that metallic pollutants do not affect oysters cultures in Ebro Delta associated bays.

Keywords

Metal Oyster Ebro Human health Agriculture Pollution 

Notes

Acknowledgments

The authors would like to thank the Research Grant of the Projects MEC-MICINN CTM2007-62436 and CTM2010-18167.

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Victoria Ochoa
    • 1
    Email author
  • Carlos Barata
    • 2
  • M. Carmen Riva
    • 1
  1. 1.Center for Research and Innovation in ToxicologyTechnical University of CataloniaTerrassaSpain
  2. 2.Department of Environmental ChemistryIDAEA-CSICBarcelonaSpain

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