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The emissions of monoaromatic hydrocarbons from small polymeric toys placed in chocolate food products

Marć, Mariusz, Formela, Krzysztof, Klein, Marek, Namieśnik, Jacek, Zabiegała, Bożena
The Science of the total environment 2015 v.530-531 pp. 290-296
Fourier transform infrared spectroscopy, benzene, children, chocolate, composite polymers, differential scanning calorimetry, emissions, ethylbenzene, foods, manufacturing, polyamides, styrene, thermogravimetry, toluene, toys
The article presents findings on the emissions of selected monoaromatic hydrocarbons from children's toys placed in chocolate food products. The emission test system involved the application of a new type of microscale stationary emission chamber, μ-CTE™ 250. In order to determine the type of the applied polymer in the manufacture of the tested toys, Fourier transform infrared spectroscopy and thermogravimetric analysis coupled with differential scanning calorimetry were used. It was found that the tested toy components or the whole toys (figurines) are made of two main types of polymers: polyamide and acrylonitrile–butadiene–styrene copolymer. Total number of studied small polymeric toys was 52. The average emissions of selected monoaromatic hydrocarbons from studied toys made of polyamide were as follows: benzene: 0.45±0.33ng/g; toluene: 3.3±2.6ng/g; ethylbenzene: 1.4±1.4ng/g; p,m-xylene: 2.5±4.5ng/g; and styrene: 8.2±9.9ng/g. In the case of studied toys made of acrylonitrile–butadiene–styrene copolymer the average emissions of benzene, toluene, ethylbeznene, p,m-xylene and styrene were: 0.31±0.29ng/g; 2.5±1.4ng/g; 4.6±8.9ng/g; 1.4±1.1ng/g; and 36±44ng/g, respectively.