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Dioxins, PCBs, and HCB in soil and peat profiles from a pristine boreal catchment
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2010 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 158, no 7, 2518-2525 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this study was to explore how atmospherically derived soil pollution is affected by environmental processes at two typical boreal catchment landscape type settings: wetlands and forested areas. Measurements of hydrophobic organic compounds (HOCs) in forest soil and peat from an oligotrophic mire at various depths were performed at a remote boreal catchment in northern Sweden. HOCs in peat were evenly distributed throughout the body of the mire while levels of HOCs in the forest soil increased with increased amount of organic matter. Evaluation of HOC composition by principal component analysis (PCA) showed distinct differences between surface soils and deeper soil and peat samples. This was attributed to vertical transport, degradation and/or shifting sources over time. The calculated net vertical transport differed between surface layers (0.3%) and deeper soils (8.0%), suggesting that vertical transport conditions and processes differ in the deeper layers compared to the surface layers.

Place, publisher, year, edition, pages
2010. Vol. 158, no 7, 2518-2525 p.
Keyword [en]
Dioxin, PCDD/F, PCB, HOCs, Diffuse pollution, Boreal catchment
URN: urn:nbn:se:umu:diva-35286DOI: 10.1016/j.envpol.2010.03.009ISI: 000279063600024PubMedID: 20434247OAI: diva2:342880
Available from: 2010-08-11 Created: 2010-08-11 Last updated: 2010-09-24Bibliographically approved

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Bergknut, MagnusWiberg, Karin
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