Abstract
Polynuclear hydrocarbons contained in the atmospheric dust are analyzed by a combination of thin-layer and gas chromatography. The dust as such, or a cyclohexane extract, is applied on a silica gel plate and developed with cyclohexanebenzene (1:1.5). In this way polynuclear hydrocarbons are separated from other classes of components such as paraffins, heterocyclics, etc. The part containing polynuclear hydrocarbon is extracted again and examined by gas chromatography on a glass capillary column.
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