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Prediction of mono- and polycyclic aromatic hydrocarbon degradation in spiked soils using cyclodextrin extraction.

Allan, Ian J. and Semple, Kirk T. and Hare, Rina and Reid, Brian J. (2006) Prediction of mono- and polycyclic aromatic hydrocarbon degradation in spiked soils using cyclodextrin extraction. Environmental Pollution, 144 (2). pp. 562-571. ISSN 0269-7491

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Abstract

In this study, an aqueous-based hydroxypropyl-beta-cyclodextrin (HPCD) extraction technique was assessed for its capacity to determine the microbially degradable fraction of mono- and polycyclic aromatic hydrocarbons in four dissimilar soils. A linear relationship (slope = 0.90; R-2 = 0.89), approaching 1:1 between predicted and observed phenanthrene mineralization, was demonstrated for the cyclodextrin extraction; however, the water only extraction underestimated the microbially available fraction by a factor of three (slope = 3.35; R-2 = 0.64). With respect to determining the mineralizable fraction of p-cresol in soils, the cyclodextrin extraction (slope = 0.94; R-2 = 0.84) was more appropriate than the water extraction (slope = 1.50; R-2 = 0.36). Collectively, these results suggested that the cyclodextrin extraction technique was suitable for the prediction of the mineralizable fraction of representative PAHs and phenols present in dissimilar soils following increasing soil-contaminant contact times. The assessment of the microbial availability of contaminants in soils is important for a more representative evaluation of soil contamination. (c) 2006 Elsevier Ltd. All rights reserved.

Item Type: Article
Journal or Publication Title: Environmental Pollution
Uncontrolled Keywords: PAHs ; phenols ; biodegradation ; HPCD extraction ; prediction
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 18536
Deposited By: Prof Kirk T. Semple
Deposited On: 27 Oct 2008 08:55
Refereed?: Yes
Published?: Published
Last Modified: 18 Sep 2013 16:18
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/18536

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