Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 110497
Title Prediction of Petroleum Hydrocarbon Bioavailability in Contaminated Soils and Sediments
Author(s) Cuypers, M.P.; Clemens, R.; Grotenhuis, J.T.C.; Rulkens, W.H.
Source Soil and Sediment Contamination 10 (2001)5. - ISSN 1532-0383 - p. 459 - 482.
DOI http://dx.doi.org/10.1080/20015891109374
Department(s) Sub-department of Environmental Technology
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2001
Abstract Recently, several laboratory methods have been developed for the prediction of contaminant bioavailability. So far, none of these methods has been extensively tested for petroleum hydrocarbons. In the present study we investigated solid-phase extraction and persulfate oxidation for the prediction of total petroleum hydrocarbon (TPH) bioavailability. One sediment and two soil samples were subjected to solid-phase extraction, persulfate oxidation, and biodegradation, after which hydrocarbon removal was compared. It was demonstrated that a short solid-phase extraction (168 h) provided a good method for the prediction of the extent of TPH degradation in an optimized slurry reactor (84 d). Solid-phase extraction slightly underestimated the degradation of readily biodegradable hydrocarbons, whereas it slightly overestimated the degradation of poorly biodegradable hydrocarbons. Persulfate oxidation appeared to be unfit for the prediction of TPH bioavailability as persulfate was unable to oxidize hydrocarbons with a high ionization potential. Hydrocarbons that were affected were likely to be transformed rather than completely oxidized. Nevertheless, persulfate oxidation provided a good method for the prediction of polycyclic aromatic hydrocarbon (PAH) bioavailability.
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