Method for detecting volatility carbonyl compound in cigarette filter tip with solid phase extraction capillary gas chromatography

The invention relates to a method of detecting evaporable carbonyl compounds in cigarette filters by the solid-phase extraction and capillary gas chromatography. The cigarette filter is added with the Hydrochloric acidified 2,4-dinitrophenylhydrazine solution, for vibrating and extracting, then the extracted liquid is moved to C18 solid phase extraction columnella, eluted by cyclohexane, and the elutriant analyzed by GC, DB-5MS capillary chromato bar is adopted. The volume of sample injection is 1MuL. N2 is used as carrier gas in splitless sample injection. The flow rate of carrier gas is 1-2.5mL/min and the temperature of injection port is 200-250 DEG C. FID detector and the temperature of detector is 250 DEG C. The heating process is to keep initial temperature at 100 DEG C for 0-1min and heating rate at 15-20 DEG C /min, to 200 DEG C for 5min, then the heat rate from 4-8 DEG C /min, heating to 250 DEG C, keeps the temperature under 250 DEG C for 10min, quantitative analysis is according to the peak area. The invention lowers the operation request and can eliminate interference of nontaget compound which can separate formaldehyde, butanone, acrolein, crotonaldehyde, n-butylaldehyde, acetone, acetaldehyde from the cigarette filters effectively and quantitative analysis the seven evaporable carbonyl compounds in the cigarette filter accurately.