GC-MS Determination of 5 Aldehyde Flavours in Cigarettes

Mixed standard solution of five aldehyde flavours was added to each of the qualified cigarette samples which were then kept under 4 different conditions for 48 h.The cut tobacco and filter tip were taken out from the cigarettes and the 5 flavours were separated by the simultaneous distillation and extraction apparatus using dichloromethan as extraction solvent.The extract was evaporated to 1 mL,which was used for GC-MS analysis after adding phenylethyl acetate as internal standard.The PE-5MS capillary column was used for GC separation and the SIM mode was adopted in MS determination.Linear relationships between values of peak area ratios of the flavour standard to internal standard and mass concentration of each of the flavours obtained were same and in the range from 0.05 to 1.0 mg·L-1.Values of detection limit (3S/N) found were in the range from 0.02 to 0.32 mg·L-1.Recovery was tested by standard addition method,giving values of recovery in the range from 85.5% to 91.9%,with values of RSD′s (n=5) less than 5.5%.