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Mercury speciation and safety of fish from important fishing locations in the Czech Republic

Author

Listed:
  • Renáta KENŠOVÁ

    (Department of Veterinary Public Health and Toxicology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic)

  • Kamila KRUŽÍKOVÁ

    (Department of Veterinary Public Health and Toxicology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic)

  • Zdeňka SVOBODOVÁ

    (Department of Veterinary Public Health and Toxicology, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic)

Abstract

The aim of the study was to describe the distribution of total mercury in the tissues of fish originating from important Czech fishing locations and to determine the level of methylmercury as a percentage of total mercury (Hg speciation). At six important fishing locations a total of 144 fishes of 13 species were caught and analysed. Samples of muscle, liver, gonads and scales were analysed for total mercury and in the case of muscles for methylmercury concentrations. Total mercury was determined by AAS using an AMA 254 analyser, and methylmercury determination was performed by GC/ECD using a GC-2010A chromatograph. Total mercury concentrations in muscle and other tissues of all the fish from all fishing locations were below 0.5 mg/kg, with the exception of 6 asps (Aspius aspius). A significant (P < 0.05) correlation was found between the total mercury concentrations in scales and other tissues. Methylmercury made up about 46-100% of total mercury in muscle. The overall results confirmed the good hygienic quality of fish from important Czech fishing locations.

Suggested Citation

  • Renáta KENŠOVÁ & Kamila KRUŽÍKOVÁ & Zdeňka SVOBODOVÁ, 2012. "Mercury speciation and safety of fish from important fishing locations in the Czech Republic," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 30(3), pages 276-284.
    • Handle: RePEc:caa:jnlcjf:v:30:y:2012:i:3:id:239-2011-cjfs
    DOI: 10.17221/239/2011-CJFS
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    References listed on IDEAS

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    1. Kamila Kružíková & Jana Blahová & Renáta Kenšová & Jana Jurčíková & Dušan Hypr & Zdeňka Svobodová, 2009. "Mercury and methylmercury content in chub from the Svitava and Svratka Rivers at agglomeration Brno," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 27(6), pages 470-476.
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