Analysis of Volatile Organic Compounds in Innerliner with GC/MS

A method for determining 19 volatile organic compounds(VOCs) in innerliner with headspace gas chromatography/mass spectrometry(GC/MS) by using fluorobenzene as an internal standard(ISTD) was established and 20 innerliner samples were tested.The results indicated that:1) fluorobenzene,was a suitable ISTD for quantitative analysis of these 19 VOCs;2) the recoveries of the VOCs were from 92% to 109% with relative standard deviation(RSD) of less than 4% and the limits of detection between 0.001 and 0.004 mg/m²;3) fewer VOCs were detectable from the samples,the detectable rates of methanol,alcohol,isopropanol,acetone,propylene glycol methyl ether,and ethyl acetate were 90%,100%,100%,100%,55% and 25%,respectively.The residual concentrations of methanol,alcohol and isopropanol were relatively higher,while those of the other 3 VOCs were lower,and total residual concentration was within the limits specified by standard YC 264-2008. Benzene,ethylbenzene,xylene,cyclohexanone,propylene glycol monoethyl ether, 4-methyl-2-pentanone,propyl acetate and isopropyl acetate were not detectable in all samples.Toluene was detected in three samples.