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Relationships between organic matter, black carbon and persistent organic pollutants in European background soils : implications for sources and environmental fate.

Nam, Jae Jak and Gustafsson, Orjan and Kurt-Karakus, Perihan and Breivik, Knut and Steinnes, Eiliv and Jones, Kevin C. (2008) Relationships between organic matter, black carbon and persistent organic pollutants in European background soils : implications for sources and environmental fate. Environmental Pollution, 156 (3). pp. 809-817. ISSN 0269-7491

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Abstract

Black carbon (BC) and total organic carbon (TOC) contents of UK and Norwegian background soils were determined and their relationships with persistent organic pollutants (HCB, PAHs, PCBs, co-planar PCBs, PBDEs and PCDD/Fs) investigated by correlation and regression analyses, to assess their roles in influencing compound partitioning/retention in soils. The 52 soils used were high in TOC (range 54–460 mg/g (mean 256)), while BC only constituted 0.24–1.8% (0.88%) of the TOC. TOC was strongly correlated (p < 0.001) with HCB, PCBs, co-PCBs and PBDEs, but less so with PCDD/Fs (p < 0.05) and PAHs. TOC explained variability in soil content, as follows: HCB, 80%; PCBs, 44%; co-PCBs, 40%; PBDEs, 27%. BC also gave statistically significant correlations with PBDEs (p < 0.001), co-PCBs (p < 0.01) and PCBs, HCB, PCDD/F (p < 0.05); TOC and BC were correlated with each other (p < 0.01). Inferences are made about possible combustion-derived sources, atmospheric transport and air–surface exchange processes for these compounds. Total organic carbon and black carbon fractions can play an important role in the storage and cycling of persistent organic pollutants in background soils.

Item Type: Article
Journal or Publication Title: Environmental Pollution
Uncontrolled Keywords: Persistent organic pollutants ; Soil organic matter ; Black carbon ; Environmental fate
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 28154
Deposited By: Mr Richard Ingham
Deposited On: 12 Nov 2009 14:41
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 16:45
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/28154

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