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Application of silicone rubber passive samplers to investigate the bioaccumulation of PAHs by Nereis virens from marine sediments.

Authors
  • Yates, Kyari1
  • Pollard, Pat
  • Davies, Ian M
  • Webster, Lynda
  • Moffat, Colin F
  • 1 School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen AB25 1HG, UK. [email protected]
Type
Published Article
Journal
Environmental pollution (Barking, Essex : 1987)
Publication Date
Dec 01, 2011
Volume
159
Issue
12
Pages
3351–3356
Identifiers
DOI: 10.1016/j.envpol.2011.08.038
PMID: 21906858
Source
Medline
Language
English
License
Unknown

Abstract

The availability of polycyclic aromatic hydrocarbons (PAHs) from marine sediments to the ragworm (Nereis virens) was studied. Concentrations of PAHs in pore waters were determined using silicone rubber passive samplers. Calculated bioconcentration factors confirmed that partitioning of PAHs between the lipid phase of the polychaetes and pore water is a passive process. Low biota-sediment accumulation factors (BSAF) calculated using total sediment concentration suggested a fraction of the total PAH burden in the sediment may be strongly sorbed to organic carbon and not available to the polychaete. Organic carbon normalised concentrations of the potentially exchangeable fractions of contaminants and freely dissolved concentrations (measured using silicone rubber samplers) provide a better description of the observed bioaccumulation by the ragworms. These data indicate that the concept of availability should be included in environmental risk assessments based upon equilibrium partitioning models, and that silicone rubber samplers can provide the necessary information for these models. Copyright © 2011 Elsevier Ltd. All rights reserved.

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