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Freely dissolved PCDD/F concentrations in the Frierfjord, Norway: comparing equilibrium passive sampling with ""active"" water sampling
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
2010 (English)In: Journal of Soils and Sediments, ISSN 1439-0108, E-ISSN 1614-7480, Vol. 10, no 2, 162-171 p.Article in journal (Refereed) Published
Abstract [en]

Equilibrium passive samplers consisting of 55-A mu m polyoxymethylene (POM) and 170-A mu m polydimethylsiloxane were tested for the analysis of polychlorinated dibenzodioxin/furan (PCDD/F) in the pore water and overlying water of the Frierfjord, a bay in southern Norway. This fjord is heavily polluted with PCDD/Fs due to emissions from a former Mg smelter. Field exposures of both equilibrium passive sampler types yielded similar results for freely dissolved PCDD/F concentrations (C (W,free)) in the overlying water. In addition, the passive sampling data deviated less than an order of magnitude from C (W,free) obtained with conventional ""active"" sampling through pumping/filtration over glass fiber filters and polyurethane foam. A similar comparison was done for the pore water, where POM passive samplers also proved to yield freely dissolved pore water concentrations (C (PW,free)) that deviated less than an order of magnitude from earlier published values measured by direct pore water extraction. The data were also used to derive sediment-water activity ratios, which indicate the diffusive flux direction. High sediment-to-water activity ratios (median value of 160 for 17 congeners) indicated a strong diffusion gradient between the sediment pore water and the overlying water, probably due to deposition of particle-bound PCDD/Fs in combination with low sedimentation rates.

Place, publisher, year, edition, pages
2010. Vol. 10, no 2, 162-171 p.
Keyword [en]
PCDD/F, Frierfjord, Equilibrium passive sampling, Free concentrations
National Category
Environmental Sciences Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-50156DOI: 10.1007/s11368-009-0152-3ISI: 000274853100003OAI: oai:DiVA.org:su-50156DiVA: diva2:382177
Note
authorCount :3Available from: 2010-12-30 Created: 2010-12-21 Last updated: 2017-12-11Bibliographically approved

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Cornelissen, GerardBroman, Dag
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