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Atmospheric deposition, retention, and stream export of dioxins and PCBs in a pristine boreal catchment
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry. (Arcum)
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2011 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 159, no 6, 1592-1598 p.Article in journal (Refereed) Published
Abstract [en]

The mass-balance between diffuse atmospheric deposition of organic pollutants, amount of pollutants retained by the terrestrial environment, and levels of pollutants released to surface stream waters was studied in a pristine northern boreal catchment. This was done by comparing the input of atmospheric deposition of polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) and PCBs with the amounts exported to surface waters. Two types of deposition samplers were used, equipped with a glass fibre thimble and an Amberlite sampler respectively. The measured fluxes showed clear seasonality, with most of the input and export occurring during winter and spring flood, respectively. The mass balance calculations indicates that the boreal landscape is an effective sink for PCDD/Fs and PCBs, as 96.0-99.9 % of received bulk deposition was retained, suggesting that organic pollutants will continue to impact stream water in the region for an extended period of time.

Place, publisher, year, edition, pages
2011. Vol. 159, no 6, 1592-1598 p.
Keyword [en]
dioxin, atmospheric deposition, diffuse pollution, retention, catchment
National Category
Chemical Sciences
URN: urn:nbn:se:umu:diva-43531DOI: 10.1016/j.envpol.2011.02.050PubMedID: 21440967OAI: diva2:414479
Available from: 2011-05-03 Created: 2011-05-03 Last updated: 2016-06-09Bibliographically approved

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Bergknut, MagnusJansson, StinaWiberg, Karin
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