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

doi:10.1016/j.marenvres.2006.02.005

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 journal › Article › Academic › peer-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 language	English
Pages (from-to)	511-530
Number of pages	20
Journal	Marine Environmental Research
Volume	61
Issue number	5
DOIs	https://doi.org/10.1016/j.marenvres.2006.02.005
Publication status	Published - Jun 2006
Externally published	Yes

Keywords

Elimination kinetics
Estuaries
Food chain
Model-bioaccumulation
Organotins
Uptake

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title = "Organotin accumulation in an estuarine food chain: Comparing field measurements with model estimations",

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.",

keywords = "Elimination kinetics, Estuaries, Food chain, Model-bioaccumulation, Organotins, Uptake",

author = "Karin Veltman and Huijbregts, {Mark A.J.} and {van den Heuvel-Greve}, {Martine J.} and A.D. Vethaak and A.J. Hendriks",

year = "2006",

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T2 - Comparing field measurements with model estimations

AU - Veltman, Karin

AU - Huijbregts, Mark A.J.

AU - van den Heuvel-Greve, Martine J.

AU - Vethaak, A.D.

AU - Hendriks, A.J.

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AB - 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.

KW - Elimination kinetics

KW - Estuaries

KW - Food chain

KW - Model-bioaccumulation

KW - Organotins

KW - Uptake

U2 - 10.1016/j.marenvres.2006.02.005

DO - 10.1016/j.marenvres.2006.02.005

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