Abstract
A micro-vacuum sublimation technique was studied for the separation of poly-cyclic hydrocarbons from samples of atmospheric pollutants. This technique gives quantitative separations of pyrene from particulate samples directly and from the extracts of such samples. The efficiency of separation is of the same order as that of column chromatography, and sublimation is more rapid. Enrichment of extracts or residues from column eluates can be effected.