Abstract
A thin-layer chromatographic procedure for the identification of waterborne petroleum oil pollutants for use in either the laboratory or the field is developed. Aromatic and polar compounds are removed from the oil sample by a liquid-liquid extraction with acidified methanol. The extract is then chromatographed on a silica-gel thin-layer plate. Separated components are detected by their fluorescence under long and short wave ultraviolet light. Iodine staining is also used to visualize unsaturated, nonfluorescing compounds. This procedure is successfully applied to ''fingerprinting'' gasolines, kerosenes, diesel oils, heavy fuel oils, lubricating oils, and ship bilge oils.
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