GAS CHROMATOGRAPHIC DETERMINATION OF POLYNUCLEAR HYDROCARBONS IN PARTICULATE AIR POLLUTANTS

Abstract

An attempt to simplify procedure for analysis of polynuclear hydrocarbons in par-ticulates in town air was carried out. Vacuum sublimation method was employed to extract organic materials from the particulates instead of the method with a Soxhlet apparatus. The sublimate was dissolved in small amount of benzene and the solution was submitted to direct gas chromatographic analysis by utilizing a flame ionization detector or an electron capture detector. It was proved that further purification of the sublimate by partition was unnecessary in this method. Seven polynuclear hy-drocarbons including benzo(a)pyrene were determined on the collected particulatesfrom the air by this method.