Selective supercritical fluid extraction to identify aged sediment-bound PCBs available for uptake by eel

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Selective supercritical fluid extraction to identify aged sediment-bound PCBs available for uptake by eel. / Nilsson, Tobias; Häkkinen, J; Larsson, Per; Björklund, Erland.

I: Environmental Pollution, Vol. 140, Nr. 1, 2006, s. 87-94.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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Nilsson, Tobias ; Häkkinen, J ; Larsson, Per ; Björklund, Erland. / Selective supercritical fluid extraction to identify aged sediment-bound PCBs available for uptake by eel. I: Environmental Pollution. 2006 ; Vol. 140, Nr. 1. s. 87-94.

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TY - JOUR

T1 - Selective supercritical fluid extraction to identify aged sediment-bound PCBs available for uptake by eel

AU - Nilsson, Tobias

AU - Häkkinen, J

AU - Larsson, Per

AU - Björklund, Erland

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Ecology/Ecotoxicology (Closed 2011) (011006020), Analytical Chemistry (S/LTH) (011001004)

PY - 2006

Y1 - 2006

N2 - A naturally contaminated sediment was partially extracted with selective supercritical fluid extraction (SFE) to remove a fraction of supposedly bioavailable PCBs from the matrix. Eels (Anguilla anguilla) were cultured in systems with untreated and pre-extracted sediment, respectively, and it was shown that the SFE treatment selectively removed bioavailable PCBs from the sediment, since relative biota-to-sediment accumulation factors (BSAFs) for the eight studied PCB congeners were much lower in the pre-extracted than in the untreated system at the end of the study. Relative BSAF values decreased with about the same relative amount for all eight congeners, independent of the degree of chlorination and the initial concentration in the sediment. The results demonstrate the ability of SFE to selectively remove sediment-bound PCBs that are available for uptake by the eels, thus demonstrating the feasibility of using selective SFE to estimate bioavailability of PCBs in sediments. Supercritical fluid extraction could successfully measure bioavailable fractions of PCBs in sediment.

AB - A naturally contaminated sediment was partially extracted with selective supercritical fluid extraction (SFE) to remove a fraction of supposedly bioavailable PCBs from the matrix. Eels (Anguilla anguilla) were cultured in systems with untreated and pre-extracted sediment, respectively, and it was shown that the SFE treatment selectively removed bioavailable PCBs from the sediment, since relative biota-to-sediment accumulation factors (BSAFs) for the eight studied PCB congeners were much lower in the pre-extracted than in the untreated system at the end of the study. Relative BSAF values decreased with about the same relative amount for all eight congeners, independent of the degree of chlorination and the initial concentration in the sediment. The results demonstrate the ability of SFE to selectively remove sediment-bound PCBs that are available for uptake by the eels, thus demonstrating the feasibility of using selective SFE to estimate bioavailability of PCBs in sediments. Supercritical fluid extraction could successfully measure bioavailable fractions of PCBs in sediment.

U2 - 10.1016/j.envpol.2005.06.021

DO - 10.1016/j.envpol.2005.06.021

M3 - Article

VL - 140

SP - 87

EP - 94

JO - Environmental Pollution

T2 - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

IS - 1

ER -