Identification of refined petroleum products in contaminated soils using an identification index for GC chromatograms

Title
Identification of refined petroleum products in contaminated soils using an identification index for GC chromatograms
Authors
권동욱고명수양중석권만재이승우이승학
Keywords
petroleum; soil contamination; source identification; environmental forensics; gas chromatography
Issue Date
2015-08
Publisher
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Citation
VOL 22, NO 16, 12029-12034
Abstract
Hydrocarbons found in the environment are typicallycharacterized by gas chromatography (GC). The shape of the GC chromatogram has been used to identify the source of petroleum contamination. However, the conventional practice of simply comparing the peak patterns of source products to those of environmental samples is dependent on the subjective decisions of individual analysts. We have developed and verified a quantitative analytical method for interpreting GC chromatograms to distinguish refined petroleum products in contaminated soils. We found that chromatograms for gasoline, kerosene, and diesel could be divided into three ranges with boundaries at C6, C8, C16, and C26. In addition, the relative peak area (RPAGC) of each range, a dimensionless ratio of the peak area within each range to that of the total range (C6– C26), had a unique value for each petroleum product. An identification index for GC chromatograms (IDGC), defined as the ratio of RPAGC of C8–C16 to that of C16–C26, was able to identify diesel and kerosene sources in samples extracted from artificially contaminated soils even after weathering. Thus, the IDGC can be used to effectively distinguish between refined petroleum products in contaminated soils
URI
http://pubs.kist.re.kr/handle/201004/50021
ISSN
09441344
Appears in Collections:
KIST Publication > Article
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