title: Migration of styrene and ethylbenzene from virgin and recycled expanded polystyrene containers and discrimination of these two kinds of polystyrene by principal component analysis.
abstract: The migration of styrene and ethylbenzene from virgin and recycled expanded polystyrene (EPS) containers into isooctane was investigated using gas chromatography-mass spectrometry (GC-MS). EPS containers were in two-sided contact with isooctane at temperatures of 25 and 40°C. It was shown that recycled EPS gave greater migration ratios compared with virgin EPS, which indicated that styrene and ethylbenzene migrated more easily from recycled EPS. In addition, an analytical method to distinguish between virgin and recycled EPS containers was established by GC-MS followed by principal component analysis (PCA). The relative peak area of the identified compounds was used as input data for PCA. Distinct separation between virgin and recycled EPS was achieved on a score plot. Extension of this method to other plastics may be of great interest for recycled plastics identification.
authors: a Key Laboratory of Product Packaging and Logistics, Packaging Engineering Institute , Jinan University , Zhuhai , China.
authors: Qin-Bao
authors: QB
authors: Lin
authors: a Key Laboratory of Product Packaging and Logistics, Packaging Engineering Institute , Jinan University , Zhuhai , China.
authors: Xue-Chao
authors: XC
authors: Song
authors: b The Testing and Technology Center for Industrial Products , Shenzhen Entry Exit Inspection and Quarantine Bureau , Shenzhen , China.
authors: Hong
authors: H
authors: Fang
authors: a Key Laboratory of Product Packaging and Logistics, Packaging Engineering Institute , Jinan University , Zhuhai , China.
authors: Yu-Mei
authors: YM
authors: Wu
authors: a Key Laboratory of Product Packaging and Logistics, Packaging Engineering Institute , Jinan University , Zhuhai , China.
authors: Zhi-Wei
authors: ZW
authors: Wang
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D011137:Polystyrenes / Q000737:chemistry*; D025341:Principal Component Analysis; D020058:Styrene / Q000737:chemistry*
chemical_list: D001555:Benzene Derivatives; D011137:Polystyrenes; D020058:Styrene; C004912:ethylbenzene
keywords: GC-MS; Migration; ethylbenzene; principal component analysis; recycled polystyrene; styrene