ANALYSIS OF SELECTED GASEOUS ORGANIC MICRO-POLLUTANTS IN AIR BY MEANSOF SOLID-PHASE MICROEXTRACTION GAS-CHROMATOGRAPHY MASS-SPECTROMETRY, CALIBRATION PROBLEMS

In this work, problems related to calibration of solid phase microextr action (SPME) device were described. The effects of humidity and tempe rature on organic pollutants sampling from gaseous matrices on a 100 m u m FDMS coated SPME fiber were studied. Standard gaseous mixtures use d in these studies were generated by the permeation method and humidif ied to known levels of relative humidity. The SPME-GC-MS based procedu re was used to determine organic vapours (carbon tetrachloride, toluen e, chlorobenzene, p-xylene and n-decane) in a laboratory air.