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Determination of naphthenic acids in crude oils using nonaqueous ion exchange solid-phase

Lookup NU author(s): Dr Martin Jones, Jonathan Watson, William Meredith, Dr Barry Bennett


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A method is presented for the routine, rapid, and quantitative analysis of aliphatic and naphthenic acids in crude oils, based on their isolation using nonaqueous ion exchange solid-phase extraction cartridges. The isolated acid fractions are methylated and analyzed by gas chromatography and gas chromatography/mass spectrometry. The method is effective on both light and heavy oils and is capable of providing mechanistic information of geochemical significance on the origin of the acids in the oils. Analysis of oils that were solvent extracted from laboratory and field mesocosm marine sediment oil degradation studies indicate that this new method of analyzing the products of hydrocarbon biodegradation may be a useful tool for monitoring the progress of bioremediation of oil spills in the environment.

Publication metadata

Author(s): Jones DM, Watson JS, Meredith W, Chen M, Bennett B

Publication type: Article

Publication status: Published

Journal: Analytical Chemistry

Year: 2001

Volume: 73

Issue: 3

Pages: 703-707

ISSN (print): 0003-2700

ISSN (electronic): 1520-6882

Publisher: American Chemical Society


DOI: 10.1021/ac000621a

PubMed id: 11217788


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