Gas chromatographic determination of tetramethylsuccinonitrile in poly(vinyl chloride) products in contact with food.
A method is described for the determination of tetramethylsuccinonitrile (TMSN) in poly(vinyl chloride) (PVC) products in contact with food. TMSN was extracted from PVC with dichloromethane, steam distilled, extracted from the distillate with dichloromethane, then determined with a gas chromatograph equipped with a nitrogen-phosphorus detector and a 6-ft. glass column packed with Chromosorb W coated with 5% Thermon 1000 plus 0.5% phosphoric acid. Recoveries between 98.3 and 100.6% were obtained in the range of 0.5-12.5 ppm of TMSN by the use of nitrobenzene as an internal standard. The detection limit was 0.05 ppm of TMSN in 1 g of PVC products. The highest residue to TMSN found in PVC products in contact with food was 13.9 ppm.
D002849:Chromatography, Gas / Q000379:methods; D005506:Food Contamination; D007202:Indicators and Reagents; D009570:Nitriles / Q000032:analysis*; D011143:Polyvinyl Chloride; D011145:Polyvinyls
D007202:Indicators and Reagents; D009570:Nitriles; D011145:Polyvinyls; C036591:tetramethylsuccinonitrile; D011143:Polyvinyl Chloride