Minimization of interferences from weathering effects and use of biomarkers in identification of spilled crude oils by gas chromatography/mass spectrometry
A GC/MS (gas chromatography/mass spectrometry) method for characterization of spilled oils is described. The method is subject to little interference from weathering effects, requires minimal sample preparation time, and is capable of distinguishing crudes of similar origins. The m/z 191 ion chromatograms of four Arabian crudes, which in their weathered forms are extremely similar to one another, can readily distinguish the four crudes even after extensive weathering. The relative abundance of methylated phenanthrenes and petroleum triterpanes, which are all displayed as major peaks in a typical m/z 191 ion chromatogram, is characteristic of each crude. In addition, the ratio of two C27 pentacyclic triterpanes are apparently independent of weathering effects and can be especially useful in matching of oils. 29 references, 3 figures, 3 tables.
- Research Organization:
- Arabian American Oil Co., Dhahran, Saudi Arabia
- OSTI ID:
- 6367724
- Journal Information:
- Anal. Chem.; (United States), Vol. 56:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
OIL SPILLS
PATTERN RECOGNITION
PETROLEUM
QUALITATIVE CHEMICAL ANALYSIS
QUANTITATIVE CHEMICAL ANALYSIS
PHENANTHRENE
GAS CHROMATOGRAPHY
MASS SPECTROSCOPY
EXPERIMENTAL DATA
WEATHERING
AROMATICS
CHEMICAL ANALYSIS
CHROMATOGRAPHY
CONDENSED AROMATICS
DATA
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
SEPARATION PROCESSES
SPECTROSCOPY
020900* - Petroleum- Environmental Aspects
400102 - Chemical & Spectral Procedures
400104 - Spectral Procedures- (-1987)
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)