title: Tenax extraction mimics benthic and terrestrial bioavailability of organic compounds.
abstract: Biota to sediment accumulation factors (BSAFs) are widely used to describe the potential accumulation of organic contaminants in organisms. From field studies it is known that these BSAFs can vary dramatically between sediments of different origin, which is possibly explained by the variation in bioavailability of organic contaminants in sediments. In the present study it is shown that the variability in BSAF values for different sediment samples obtained at two Dutch freshwater sites could largely be explained by the variation in Tenax-extractable concentrations in these sediments. Variations of a factor of about 50 could be explained. The ratio between concentrations in biota and Tenax-extractable concentrations in sediment varied slightly between sediments and contaminant class, but was close to the theoretically expected value of 2. This is a strong indication that Tenax-extractable concentrations of contaminants in sediments are an excellent indicator of available concentrations.
authors.affiliation: Institute for Inland Water Management and Wastewater Treatment, P.O. Box 17, 8200 AA Lelystad, The Netherlands. d.thulscher@riza.rws.minvenw.nl
authors.forename: Theodora E
authors.initials: TE
authors.lastname: ten Hulscher
authors.forename: Jaap
authors.initials: J
authors.lastname: Postma
authors.forename: Pieter J
authors.initials: PJ
authors.lastname: den Besten
authors.forename: Gerard J
authors.initials: GJ
authors.lastname: Stroomberg
authors.forename: Angelique
authors.initials: A
authors.lastname: Belfroid
authors.forename: Jan Willem
authors.initials: JW
authors.lastname: Wegener
authors.forename: Jack H
authors.initials: JH
authors.lastname: Faber
authors.forename: Joost J
authors.initials: JJ
authors.lastname: van der Pol
authors.forename: A Jan
authors.initials: AJ
authors.lastname: Hendriks
authors.forename: Paul C
authors.initials: PC
authors.lastname: van Noort
mesh_terms: D000818:Animals; D001682:Biological Availability; D004785:Environmental Pollutants / Q000493:pharmacokinetics* / Q000633:toxicity; D005544:Forecasting; D019015:Geologic Sediments / Q000737:chemistry*; D007306:Insecticides / Q000493:pharmacokinetics* / Q000633:toxicity; D008962:Models, Theoretical; D011078:Polychlorinated Biphenyls / Q000493:pharmacokinetics* / Q000633:toxicity; D011084:Polycyclic Aromatic Hydrocarbons / Q000493:pharmacokinetics* / Q000633:toxicity; D011108:Polymers / Q000737:chemistry*; D014018:Tissue Distribution
chemical_list: D004785:Environmental Pollutants; D007306:Insecticides; D011084:Polycyclic Aromatic Hydrocarbons; D011108:Polymers; C010514:tenax; D011078:Polychlorinated Biphenyls