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Further validation of the HPCD-technique for the evaluation of PAH microbial availability in soil.

Doick, Kieron J. and Clasper, Paula J. and Urmann, Karina and Semple, Kirk T. (2006) Further validation of the HPCD-technique for the evaluation of PAH microbial availability in soil. Environmental Pollution, 144 (1). pp. 345-354. ISSN 0269-7491

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There is currently considerable scientific interest in finding a chemical technique capable of predicting bioavailability; non-exhaustive extraction techniques (NEETs) offer such potential. Hydroxypropyl-beta-cyclodextrin (HPCD), a NEET, is further validated through the investigation of concentration ranges, differing soil types, and the presence of co-contaminants. This is the first study to demonstrate the utility of the HPCD-extraction technique to predict the microbial availability to phenanthrene across a wide concentration range and independent of soil-contaminant contact time (123 d). The efficacy of the HPCD-extraction technique for the estimation of PAH microbial availability in soil is demonstrated in the presence of co-contaminants that have been aged for the duration of the experiment together in the soil. Desorption dynamics are compared in co-contaminant and single-PAH contaminated spiked soils to demonstrate the occurrence of competitive displacement. Overall, a single HPCD-extraction technique proved accurate and reproducible for the estimation of PAH bioavailability from soil. (c) 2006 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Journal or Publication Title: Environmental Pollution
Uncontrolled Keywords: polycyclic aromatic hydrocarbons ; co-contaminants ; bioavailability ; sorption-desorption
Subjects: ?? ge ??
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 18537
Deposited By: Prof Kirk T. Semple
Deposited On: 12 Jan 2009 09:07
Refereed?: Yes
Published?: Published
Last Modified: 19 Jun 2018 02:19
Identification Number:

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