Abstract
The determination of residual vinylidene chloride monomer (VDCM) in polyvinylidene Chloride (PVDC) food packaging films was studied.
PVDC packaging films were dissolved in 20ml of tetrahydrofuran (THF). VDCM and THF were vaporized by heating in a water bath at 80°C, and collected in a test tube of THF (2.5ml) cooled with ice under a nitrogen gas flow of 40-80ml/min until 10ml had been obtained. The concentration of VDCM in the cooled test tube was determined by mass fragmentography, using selected ion recording at m/e 61.
The recovery of VDCM added to PVDC household wrap film was found to be 77.2-83.9% in the range of 1.0 to 10.0μg, and the coefficiant of variation was found to be 3.2%. No VDCM could be detected in commercial PVDC food packaging films such as household wrap, fish sausage wrapping and processed cheese wrapping.
