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Related Experiment Videos

Alkyltins in farmed fish and shellfish.

R Amodio-Cocchieri1, T Cirillo, M Amorena

  • 1Dipartimento di Scienza degli Alimenti, Facoltà di Agraria, Federico II University, Portici, Italy.

International Journal of Food Sciences and Nutrition
|August 17, 2000
PubMed
Summary

Dibutyltin (DBT) and tributyltin (TBT) contamination is widespread in farmed and wild fish and mussels in Naples, Italy, even after regulations. While levels are generally low, TBT was detected in most farmed fish and all mussels analyzed.

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Area of Science:

  • Environmental Chemistry
  • Marine Biology
  • Food Safety

Background:

  • Organotins, specifically dibutyltin (DBT) and tributyltin (TBT), were widely used in antifouling paints.
  • Regulations restricting organotin use were implemented in Italy.
  • Monitoring of organotin residues in seafood is crucial for public health and environmental assessment.

Purpose of the Study:

  • To assess the current levels of DBT and TBT residues in farmed and wild fish and mussels (Mytilus edulis) in the Naples province, Italy.
  • To evaluate the effectiveness of Italian regulations on antifouling organotin use by examining seafood contamination 4 years post-implementation.
  • To compare organotin contamination levels between farmed and free-living aquatic organisms.

Main Methods:

  • Simultaneous extraction of DBT and TBT from fish and mussel tissues.

Related Experiment Videos

  • Detection and quantification using capillary gas chromatography with a flame photometric detector (GC-FPD).
  • Analysis of farmed and free-living specimens sourced from retail markets and fishermen in Naples.

    • Main Results:

    • DBT was found in 10% of farmed fish (mean 10 µg/kg) and 23% of free-living fish (mean 2 µg/kg).
    • TBT was detected in 85% of farmed fish (mean 28 µg/kg) and 46% of free-living fish (mean 39 µg/kg).
    • All mussel samples (farmed and free-living) contained both DBT and TBT, with low average concentrations.

    Conclusions:

    • DBT and TBT contamination remains prevalent in both farmed and free-living fish and mussels available in Naples markets.
    • Despite regulations, organotin residues are detectable, indicating persistent environmental contamination or ongoing, albeit reduced, usage.
    • The generally low mean concentrations suggest a potential reduction in overall contamination, but widespread presence warrants continued monitoring.