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Less metal fluxes than expected from fibrous marine sediments
Swedish Geotechnical Institute, SE-211 22 Malmö, Sweden.
Department of Marine Sciences, University of Gothenburg, Box 461, SE-405 30 Gothenburg, Sweden.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Natural Resources and Sustainable Development. Geological Survey of Sweden, Department of marine environment & planning, Box 670, SE-751 28 Uppsala, Sweden.ORCID iD: 0000-0001-6444-3968
Department of Marine Sciences, University of Gothenburg, Box 461, SE-405 30 Gothenburg, Sweden.
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2020 (English)In: Marine Pollution Bulletin, ISSN 0025-326X, E-ISSN 1879-3363, Vol. 150, article id 110750Article in journal (Refereed) Published
Abstract [en]

Deposits of fibrous sediment, which include fiberbanks and fiber-rich sediments, are known to exist on the Swedish seafloor adjacent to coastally located former pulp and paper industries. These deposits contain concentrations of hazardous substances that exceed national background levels and contravene national environmental quality objectives (EQOs). In this study of metal fluxes from fibrous sediments using benthic flux chamber measurements (BFC) in situ we obtained detected fluxes of Co, Mo, Ni and Zn, but no fluxes of Pb, Hg and Cr. The absence of fluxes of some of the analyzed metals indicates particle bound transport of Pb, Cr and Hg from fiberbanks even though Hg might become methylated under anoxic conditions and, in that case, may enter the food chain. We found less metal fluxes than expected and thus emphasize the importance of in-situ flux measurements as a compliment to sediment metal concentrations within risk assessments of contaminated sediments.

Place, publisher, year, edition, pages
2020. Vol. 150, article id 110750
National Category
Environmental Sciences
Research subject
Natural Resources and Sustainable Development
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URN: urn:nbn:se:uu:diva-400468DOI: 10.1016/j.marpolbul.2019.110750OAI: oai:DiVA.org:uu-400468DiVA, id: diva2:1381372
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Swedish Research Council Formas, 214-2014-63Available from: 2019-12-20 Created: 2019-12-20 Last updated: 2020-01-13Bibliographically approved

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