A series of gas chromatographic-mass spectrometric analyses was carried out on polyethylene, polypropylene, polystyrene and polyamide in CAB 4.5 and CAB 650 chambers in the flaming and non-flaming combustion mode. The combustion products formed were identified and used to characterize the combustion process in both chambers; procedures were selected for testing polymeric materials for the dangerous effects of their combustion products.
Abstract-Pyrolysis, thermo-oxidation and combustion of polyethylene and polypropylene were studied and the products of these thermal degradation processes were identified by means of gas chromatography and gas chromatography-mass spectrometry. The individual products of thermal degradation were evaluated for their toxicity and a conclusion on presumed toxic effect of the combustion products of the polymers studied has been drawn.
Thermal degradation products of nitrogen-containing polymeric materials were analysed for hydrogen cyanide. A spectrophotometric method was used for the determination of cyanides using the formation of a characteristic absorption peak of cyanonickel(I1) ion in the ultraviolet spectral region. Pyrolysis and thermooxidation products were studied and conclusions on the reproducibility ot me degradation process were drawn. The effect of temperature on the quantity of hydrogen cyanide formed was studied as well.
Gas Chromatography using a column WW a molecular sieve was applied to the determination of carbon monoxide in thermal degradation products of polymeric materials. Attention was paid to the variance of individual determinations and condusions were d r a m regarding reprodua%ility of the processes studied. The carbon monoxide content in pyrolysis and thennooxidation products of the commonest polymeric materials and the effect of temperature on the amount of carbon monoxide formed were determined.
Abstract-The pyrolysis and combustion products of poly-(vinyl chloride) and those of some of its polymers, e8pecially copolymers of vinyl chloride with vinylidene chloride, were analysed using gas chromatography and gas chromatography mass spectrometry. The toxic effect of the individual products on the human organism was evaluated and presumed total toxicity of the poly-(vinyl chloride) combustion products (0.3 g PVC products per m3) was determined.
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