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

Nilsson, Tobias LU ; Häkkinen, J; Larsson, Per LU and Björklund, Erland LU (2006) In Environmental Pollution 140(1). p.87-94
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Environmental Pollution
volume
140
issue
1
pages
87 - 94
publisher
Elsevier
external identifiers
  • pmid:16188355
  • wos:000234956600012
  • scopus:30144436720
ISSN
0269-7491
DOI
10.1016/j.envpol.2005.06.021
language
English
LU publication?
yes
id
5a58800e-489f-4dda-9546-782069f9d3ed (old id 155488)
date added to LUP
2007-06-27 11:12:56
date last changed
2018-11-21 20:33:54
@article{5a58800e-489f-4dda-9546-782069f9d3ed,
  abstract     = {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. <br/><br>
<br/><br>
Supercritical fluid extraction could successfully measure bioavailable fractions of PCBs in sediment.},
  author       = {Nilsson, Tobias and Häkkinen, J and Larsson, Per and Björklund, Erland},
  issn         = {0269-7491},
  language     = {eng},
  number       = {1},
  pages        = {87--94},
  publisher    = {Elsevier},
  series       = {Environmental Pollution},
  title        = {Selective supercritical fluid extraction to identify aged sediment-bound PCBs available for uptake by eel},
  url          = {http://dx.doi.org/10.1016/j.envpol.2005.06.021},
  volume       = {140},
  year         = {2006},
}