Styrene and styrene oxide concentrations in the air during the lamination process in the reinforced plastics industry.

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Abstract
Workers involved in the processing of unsaturated polyester resins have shown an increased rate of chromosomal aberrations in their peripheral lymphocytes as compared to a control group. Styrene and styrene oxide [a mutagenic and clastogenic compound] concentrations were measured during the lamination process in the reinforced plastics industry. The mean concentration of styrene in the personal samples was 130 ppm, the highest value measured being 350 ppm. The average concentration for styrene oxide alone was 0.1 ppm, whereas the corresponding measurement for styrene oxide and its decomposition products combined was 0.7 ppm. The concentrations of styrene oxide and its derivatives were much lower (.apprx. 0.5% of the total) than styrene.

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