Carbon Sorbents as a Mean for Enrichment of Atmospheric Oxygenated VOCs with Subsequent HRGC Determination

Abstract The paper concerns the evaluation of sample preconcentration on the novel mesoporous carbons and the analytical determination of oxygenated VOCs (alcohols, aldehydes, ketones, acetates) from the gas phase. The trapped analytes were desorbed off-line by liquids and on-line by thermodesorption in combination with HRCGC, using a capillary column with a chemically bonded stationary phase under temperature programmed conditions, on-column injection and FID. Adsorption-desorption properties of the sorbents with simulated samples were evaluated by the recovery data at various concentration levels. Comparison with graphitized carbon sorbents and/or carbon molecular sieves in single bed or multibed arrangement is shown. The linearity range and limits of determination are given. An example of real sample analysis is reported (emissions measurements).