Organotin accumulation in an estuarine food chain: Comparing field measurements with model estimations

Karin Veltman*, Mark A.J. Huijbregts, Martine J. van den Heuvel-Greve, A.D. Vethaak, A.J. Hendriks

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

31 Citations (Scopus)

Abstract

The bioaccumulation model OMEGA (optimal modelling for ecotoxicological applications) is used to explore accumulation of organotins in the Western Scheldt food chain, consisting of herbi-detritivores, primary and secondary carnivorous fish and a piscivorous bird. Organotins studied are tributyltin (TBT) and triphenyltin (TPT) and the respective di- and mono-organotin metabolites. Empirical elimination rate constants are compared to model predictions for organic substances and metals. It is found that field bioaccumulation ratios are higher than predicted based on elimination kinetics relevant for organic compounds. The results indicate that uptake of organotins mainly occurs via hydrophobic mechanisms, whereas elimination may occur via metal-like kinetics. This results in very low elimination rates, which are comparable to model predictions for metals.

Original languageEnglish
Pages (from-to)511-530
Number of pages20
JournalMarine Environmental Research
Volume61
Issue number5
DOIs
Publication statusPublished - Jun 2006
Externally publishedYes

Keywords

  • Elimination kinetics
  • Estuaries
  • Food chain
  • Model-bioaccumulation
  • Organotins
  • Uptake

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