ABSTRACT
Airborne particles collected from polluted atmospheres on glass fiber filters are extracted ultrasonically in the presence of silica powder (1,2,3). The TpAH in the filtered extract are separated by high performance liquid chromatography on a column of Corasil II with a non-polar solvent, and the absorbance is measured by a UV detector at 254 nm. Compounds responding to the detector are shown in Tables 836:I, II, III, IV. The extract is suitable also for the analysis of the aliphatic hydrocarbons (4).
