Gas-liquid chromatographic headspace technique for determination of vinyl chloride in corn oil and three food-simulating solvents.
A gas-liquid chromatographic headspace technique for the determination of vinyl chloride (VC) in corn oil, 50% ethanol, 3% acetic acid, and n-heptane is described. These food-simulating solvents and the corn oil are placed in septum-sealed bottles and heated to 90 degrees C, and aliquots of headspace vapor are injected into a gas-liquid chromatograph equipped with a flame ionization detector. VC may be quantitated at concentrations of 1 ppb  or less. This technique was used to measure the migration of VC into corn oil and 50% ethanol from 2 unplasticized polyvinyl chloride sheets containing 0.28 and 0.44 ppm residual monomer.
D002849:Chromatography, Gas; D002853:Chromatography, Liquid; D008722:Methods; D009821:Oils / Q000032:analysis*; D012997:Solvents / Q000032:analysis*; D014752:Vinyl Chloride / Q000032:analysis*; D014753:Vinyl Compounds / Q000032:analysis*; D003313:Zea mays / Q000032:analysis
D009821:Oils; D012997:Solvents; D014753:Vinyl Compounds; D014752:Vinyl Chloride