Identifying source correlation parameters for hydrocarbon wastes using compound-specific isotope analysis

Hough, R.L., Whittaker, M., Fallick, A., Preston, T., Farmer, J.G. and Pollard, S.J.G. (2006) Identifying source correlation parameters for hydrocarbon wastes using compound-specific isotope analysis. Environmental Pollution, 143(3), pp. 489-498. (doi:10.1016/j.envpol.2005.11.043)

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Abstract

A preliminary evaluation of compound-specific isotope analysis (CSIA) as a novel, alternative method for identifying source correlation compounds in soils contaminated with residual heavy or weathered petroleum wastes is presented. Oil-contaminated soil microcosms were established using soil (sandy-loam, non-carbonaceous gley) amended with ballast-, crude- or No.6 fuel oil. Microcosms were periodically sampled over 256 days and δ13C values (which express the ratio of 13C to 12C) determined at each time point for five n-alkanes and the isoprenoid norpristane using gas chromatography–isotope ratio mass spectrometry (GC-IRMS). Although some temporal variation was observed, no significant temporal shifts in the δ13C values for the five n-alkanes were measured in all three oils. Isoprenoid isotope ratios (δ13C) appeared to be least affected by biotransformation, especially in the No.6 fuel oil. The research suggests that the δ13C of isoprenoids such as norpristane, may be of use as source correlation parameters. Compound-specific isotope analysis (CSIA) is a promising method for identifying source correlation compounds in soils contaminated with heavy or weathered petroleum wastes.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Preston, Professor Thomas and Fallick, Professor Anthony
Authors: Hough, R.L., Whittaker, M., Fallick, A., Preston, T., Farmer, J.G., and Pollard, S.J.G.
Subjects:Q Science > QE Geology
G Geography. Anthropology. Recreation > GE Environmental Sciences
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Environmental Pollution
Publisher:Elsevier
ISSN:0269-7491
Published Online:30 January 2006

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