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A Study of Oxidative Degradation of Plastics by GC and GC-MS

1985; Taylor & Francis; Volume: 18; Issue: 14 Linguagem: Inglês

10.1080/00032718508064478

1532-236X

Věra Pacáková, Piet A. Leclercq, Š. Holotík, I. Beroun,

Forensic Fingerprint Detection Methods

Abstract The behaviour of plastics, namely, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyamide and some copolymers, was studied in a combustion chamber in which the conditions of large-scale fires were simulated. Volatile combustion products were frozen-out or analyzed directly on two columns, one packed with Porapak Q and the other capillary column coated with squalane or CP Sil 5 CB. Carbonyl compounds were determined as the 2,4-dinitro-phenyl hydrazones on an OV-101 stationary phase. Thermal conductivity and flame ionization detectors were used. The decomposition products were identified either on the basis of retention data (retention indices) or by combined capillary GC-MS. The data obtained are used for the cataloguing of plastics from the point of view of their product toxicity during fires.