期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1216, 期 34, 页码 6155-6161出版社
ELSEVIER
DOI: 10.1016/j.chroma.2009.06.069
关键词
Sample preparation; Hollow fiber; Liquid-phase microextraction; Oil spill; Weathering; Gas chromatography-isotope ratio mass spectrometry
资金
- Earmarked Fund of the State Key Laboratory of Organic Geochemistry [SKLOG2008A02]
- National Key Technology RD Program [2006BAC11B03]
In this study, hollow fiber based liquid-phase microextraction (HF-LPME), coupled with GC, GC-MS and GC-IRMS detections. was employed to determine petroleum hydrocarbons in spilled oils. According to the results, the HF-LPME method collected more low-molecular weight components, such as C-7-C-11 n-alkanes, naphthalene, and phenanthrene, than those collected in conventional liquid-liquid extraction (LLE). The results also showed that this method had no remarkable effect on the distributions of high-molecular weight compounds such as >C-18 n-alkanes, C-1-C-3 phenanthrene, and hopanes. Also, the carbon isotopic compositions of individual n-alkanes in the two preparation processes were identical. Accordingly, HF-LPME. as a simple, fast, and inexpensive sample preparation technique, Could become a promising method for the identification of oil spill sources. (c) 2009 Elsevier B.V. All rights reserved.
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