Bioavailability in Dose and Exposure Assessment of Organic Contaminants in (Eco)toxicologyFootnote∗
∗ Experimental work in this area is funded by the following projects from the European Union (Liberation, CT-2001-00105, ECODIS, contract no: 518043-1 and A-CUTE-TOX, CT 2004-512051.

Joop L. M. Hermens Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The NetherlandsCorrespondence[email protected]

Minne B. Heringa Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands

Thomas L. ter Laak Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands

Abstract

The dose is an essential element in toxicology and risk assessment. In most cases, the dose is expressed as a concentration in the external environment. The internal dose is a more direct measure for the exposure in toxicological assays, because it takes differences in bioavailability into account. Because the internal dose is often not measurable, the effective free concentration in a medium or the environment is a useful alternative. This short review discusses the advantages of free concentration measurements of organic compounds for interpretation of effects in sediment and soil tests as well as for in vitro assays.

Notes

∗ Experimental work in this area is funded by the following projects from the European Union (Liberation, CT-2001-00105, ECODIS, contract no: 518043-1 and A-CUTE-TOX, CT 2004-512051.

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Bioavailability in Dose and Exposure Assessment of Organic Contaminants in (Eco)toxicologyFootnote∗
∗ Experimental work in this area is funded by the following projects from the European Union (Liberation, CT-2001-00105, ECODIS, contract no: 518043-1 and A-CUTE-TOX, CT 2004-512051.

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Bioavailability in Dose and Exposure Assessment of Organic Contaminants in (Eco)toxicologyFootnote∗∗ Experimental work in this area is funded by the following projects from the European Union (Liberation, CT-2001-00105, ECODIS, contract no: 518043-1 and A-CUTE-TOX, CT 2004-512051.

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Bioavailability in Dose and Exposure Assessment of Organic Contaminants in (Eco)toxicologyFootnote∗
∗ Experimental work in this area is funded by the following projects from the European Union (Liberation, CT-2001-00105, ECODIS, contract no: 518043-1 and A-CUTE-TOX, CT 2004-512051.