Abstract:

The chemical compounds of polystyrene food container were ultrasonically extracted with n-hexane and analyzed
by gas chromatography-mass spectrometry (GC-MS) using mass spectral search in NIST library. Qualitative analysis was
performed based on their retention indices (RI), and the identified compounds were quantified by peak area normalization
method. A total of 35, 39, and 38 components were isolated, 25, 27, and 23 main components of which were identified in
three different polystyrene food containers, respectively, most of which were hazardous substances containing benzene
ring. The relative standard derivations (RSDs) of this method were in the range of 2.26%?6.06%. This is a simple, rapid
and accurate method for the analysis of volatile compounds in polystyrene food container, which can provide an efficient
approach for chemical component analysis of plastic food container.

Key words: GC-MS, retention indices, polystyrene food container, identification