DETERMINATION OF LOWER THIOLS IN ATMOSPHERIC AIR

A procedure for determining lower thiols in atmospheric air at a level of maximum permissible concentrations is proposed. The procedure is b ased on the extraction of thiol impurities from air in a trap with a p olymer sorbent at room temperature, the thermal desorption of the conc entrated impurities, and their determination on a chromatograph with a flame-photometric or photoionization detector. The procedure makes it possible to determine 0.2-6 ng of thiols C-1-C-4 with a relative stan dard deviation of 25-34%.