Dennison J L, Breder C V, McNeal T, Snyder R C, Roach J A, Sphon J A
J Assoc Off Anal Chem. 1978 Jul;61(4):813-9.
The determination and confirmation of residual vinyl chloride (VC) in polyvinyl chloride (PVC) food packaging materials are described. PVC packaging materials are dissolved in dimethylacetamide (DMAC). VC is sparged from solution with helium gas and collected in sealed vials of ethanol. VC is detected and quantitated by using a headspace sampling technique and standard gas-solid chromatography (GSC) with flame ionization detection. GSC peak heights of about 5% full scale deflection are obtained for samples of PVC containing 1 ppb VC. Polymer samples taken from tubing, blood bags, food packaging films, bottles, and unprocessed resin were analyzed. Residual VC levels ranged from 0.3 to 913 ppb. VC was confirmed by GSC-mass spectrometry, using selected ion recording of m/z 62 and 64 in conjunction with full mass scans to identify components eluting near VC.
本文描述了聚氯乙烯（PVC）食品包装材料中残留氯乙烯（VC）的测定与确认方法。将PVC包装材料溶解于二甲基乙酰胺（DMAC）中。用氦气将VC从溶液中吹出，并收集于密封的乙醇小瓶中。采用顶空进样技术和带有火焰离子化检测的标准气固色谱法（GSC）对VC进行检测和定量。对于含有1 ppb VC的PVC样品，可获得约5%满量程偏转的GSC峰高。对取自管材、血袋、食品包装薄膜、瓶子以及未加工树脂的聚合物样品进行了分析。残留VC水平在0.3至913 ppb之间。通过GSC-质谱联用仪进行确认，使用m/z 62和64的选择离子记录并结合全质量扫描来识别在VC附近洗脱的成分。
