Subsequently, the package was opened and the children's toys were weighed. After weighing, each of the toys was placed in LY335979 separate polyethylene bag with an airtight seal to isolate the tested subject from the external environment. The average weight of a single toy for analysis was 6.1 ± 1.3 g.
The children's toys placed in chocolate foods were divided into two main groups: the first group consisted of no-assembly toys (figurines), which had a similar structure and size; the second group consisted of toys that need to be assembled, with the structural elements differing only in color, dimensions and shape. For this reason, to determine the main type of polymer from which the toys were made, 9 representative samples of 52 types of toys (toys with numbers 3, 4, 12, 13, 21, 25, 28, 34, 41) were selected. However, all 52 toys were tested for the determination of organic compound emissions of selected monoaromatic hydrocarbons (BTEX and styrene).
2.2. FTIR, DSC and TGA analyses of small toy samples