Related Experiment Video
Updated: Jun 28, 2026

In Situ Visualization of the Phase Behavior of Oil Samples Under Refinery Process Conditions
Published on: February 21, 2017
Infrared spectrometry field-method for identification of natural seep-oils
1Division of Natural Sciences and Mathematics, Stockton State College, Pomona, NJ 08240, U.S.A.
Abstract:
An infrared field-method has been developed which is capable of distinguishing between oils originating from natural seepage in the Santa Barbara (California) Channel region and closely similar oils from onshore drilling platforms. The technique involves a minimum of sample preparation and the use of simple infrared instrumentation which can be operated by non-technical personnel. Natural seep-oil samples were collected from the surface of the water, underwater, and from beaches in the area. The non-seep oils were obtained from production wells which were located in the same geographical areas as the seepage and were from several different well depths corresponding to different geological zones. Natural seep-oils are more aromatic than the production oils, and this difference is evidenced by observed differences in the spectra for both weathered and unweathered oils. These spectral differences between seep and non-seep oils have been found to persist after exposure to weathering for a week.
Related Concept Videos
Infrared (IR) Spectroscopy: Overview
Different compounds display unique properties due to their...
Applications of IR Spectroscopy: Overview
IR Frequency Region: Fingerprint Region
The...
IR Spectrum
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0% (complete...
IR Spectrometers
IR Frequency Region: X–H Stretching

