Volume 18, Issue 3 (July 1973)
The Identification of Lubricating Oils on Clothing by Column Chromatography, Infrared Spectroscopy, and Refractometry
Occasionally it is necessary in criminal investigations to compare oil stains on clothing with oil from a suspect automobile. The difficulties in identifying oil in such stains are complicated by the small size of sample which is normally available, by contaminants in the stain, and most of all by extraneous materials extracted from the cloth. Sometimes an additional complicating factor is the breakdown of the oil due to prolonged exposure, particularly to sunlight.