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Issue 15, 2014
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An analytical method for quantifying petroleum hydrocarbon fractions in soils, and its associated uncertainties

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Abstract

This paper proposes a method for measuring total petroleum hydrocarbons (TPH) and other hydrocarbon fractions in soils, and discusses its uncertainties. In this method, hydrocarbons are microwave-extracted from the soil and then subjected to solid phase extraction (SPE). The resulting fractions are analyzed by gas chromatography with flame ionization detection. In tests using reference soil samples of a known TPH content, recoveries were on average 90% for all fractions. The limit of detection for TPH in the tested soils was below 0.2 mg kg−1. Inter-repetition variation in the quantification of aliphatic hydrocarbons was <3%, and <4% for aromatic hydrocarbons. The expanded uncertainty associated with the method ranged from 9% to 15% for aliphatic hydrocarbons and from 19% to 30% for aromatic hydrocarbons. The possible contributors towards the overall uncertainty are discussed.

Graphical abstract: An analytical method for quantifying petroleum hydrocarbon fractions in soils, and its associated uncertainties

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Publication details

The article was received on 10 Jan 2014, accepted on 15 May 2014 and first published on 16 May 2014


Article type: Paper
DOI: 10.1039/C4AY00097H
Author version available: Download Author version (PDF)
Citation: Anal. Methods, 2014,6, 5527-5536
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    An analytical method for quantifying petroleum hydrocarbon fractions in soils, and its associated uncertainties

    O. P. Jiménez, R. M. Pérez Pastor and O. E. Segovia, Anal. Methods, 2014, 6, 5527
    DOI: 10.1039/C4AY00097H

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