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Research article - Peer-reviewed, 2012

PCDD/F release during benthic trawler-induced sediment resuspension

Allan, Ian J; Nilsson, Hans; Tjensvoll, Ingrid; Bradshaw, Clare; Naes, Kristoffer


Benthic trawling can cause the resuspension of large amounts of sediments. Such regular practice in the Grenland fjord system in the south of Norway has the potential to affect the fate, movement, and bioavailability of sediment-associated polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs). A novel mode of exposing passive sampling devices consisting of towing semipermeable membrane devices attached to the trawl net was used to gauge in situ changes in the freely dissolved concentration of PCDD/Fs on benthic trawlerinduced sediment resuspension. Significant accumulation of a number of PCDD/F congeners was observed despite the short (5?h) sampler exposure times. On average, a one order of magnitude increase in freely dissolved PCCD/F concentrations was seen within minutes of the sediment being resuspended. This observation was supported by similar changes in filtered PCDD/F concentrations measured by high-volume sampling prior to resuspension and in the sediment plume. Environ. Toxicol. Chem. 2012; 31: 27802787. (c) 2012 SETAC


Polychlorinated dibenzo-p-dioxins and dibenzofurans; Passive sampling; Sediment resuspension; Benthic trawling; Desorption

Published in

Environmental Toxicology and Chemistry
2012, volume: 31, number: 12, pages: 2780-2787

Authors' information

Allan, Ian J
Swedish University of Agricultural Sciences, Department of Aquatic Resources
Tjensvoll, Ingrid
Bradshaw, Clare
Naes, Kristoffer

Sustainable Development Goals

SDG6 Clean water
SDG14 Life below water
SDG3 Good health and wellbeing

UKÄ Subject classification

Organic Chemistry

Publication Identifiers


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