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Potential migration release of volatile compounds from plastic containers destined for food use in microwave ovens

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Several commercially available plastic containers of polycarbonate, polypropylene-copolymer, polypropylene-20% talcum, polypropylene random and styrene-acrylonitrile designed for heating food in microwave ovens were studied. The analytical procedure based on a purge & trap (P&T) GC-MS was optimized. It consisted of heating the materials at 100°C in a P&T system coupled in line with GC-MS equipment. The compounds released from the materials were then identified through their mass spectra. Variables such as the time of purge using helium as the carrier gas in the system, sample temperature, the type of solid trap, the desorption temperature and the time as well as chromatographic separation of all the compounds released from the plastic were optimized. Compounds such as methylbenzene, ethylbenzene, 1-octene, xylene, styrene and 1,4-dichlorobenzene were found in all the containers. Quantitative analysis and potential migrations are reported and discussed.
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Keywords: ANALYSIS; MICROWAVE; MIGRATION; PET-GC-MS; VOLATILE COMPOUNDS

Document Type: Research Article

Affiliations: Universidad de Zaragoza (C. P. S.), Departamento de Química Analítica, c\\ María de Luna 3, Zaragoza, E-50015, Spain

Publication date: June 1, 2002

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