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  • Title: Determination of styrene migration from food-contact polymers into margarine, using azeotropic distillation and headspace gas chromatography.
    Author: Varner SL, Breder CV, Fazio T.
    Journal: J Assoc Off Anal Chem; 1983 Sep; 66(5):1067-73. PubMed ID: 6630122.
    Abstract:
    Migration studies were conducted to determine the quantity of styrene that migrates from polymers into fatty foods, specifically margarine. Azeotropic distillation was used to isolate styrene from the margarine. Headspace gas chromatography with a Chromosorb 104 column and a flame ionization detector was used for quantitation. The quantitation limit for the method was about 25 ppb (wt/wt) styrene in margarine. On the average, greater than 90% of the styrene was recovered. Several commercial margarines were examined. The method and results of the migration studies are presented. There was no detectable migration of styrene into margarine.
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