Journal
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
Volume 34, Issue 1, Pages 126-132Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19440049.2016.1253875
Keywords
Migration; styrene; ethylbenzene; recycled polystyrene; GC-MS; principal component analysis
Funding
- National Natural Science Foundation of China [21277085]
- Research Funding Program of General Administration of Quality Supervision, Inspection and Quarantine, China [2015IK259]
- Jinan University's Scientific Research Creativeness Cultivation Project for Outstanding Undergraduates Recommended for Postgraduate Study
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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 degrees 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.
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