Survey of Primary Aromatic Amines and Colorants in Polyurethane, Nylon and Textile Toys.

The residual and migration levels of 28 primary aromatic amines (PAAs) in polyurethane and nylon toys were determined using LC-MS/MS, and the migration and residual amounts of PAAs and 15 colorants in textile toys were determined using LC-MS/MS and LC-TOF-MS according to the European Standard EN71. Among 34 polyurethane toy samples, 2,6-diaminotoluene and 2,4-diaminotoluene were detected in the same 12 samples at residual levels ranging from 2.1 to 19.7 and from 7.6 to 39.6 µg/g, respectively. Furthermore, 4,4'-diaminodiphenylmethane (4,4'-MDA) and aniline were detected in 9 samples (from 0.2 to 8.7 µg/g), and one sample (0.4 µg/g), respectively. PAAs were not detected in the 8 samples of nylon toys. As for the migration test into water, only 4,4'-MDA migrated from 3 polyurethane toys at levels ranging from 0.4 to 2.5 µg/g. PAAs did not migrate from the 43 textile toys, but colorants such as Solvent Yellow 1 and Basic Red 9 were detected at the residual level of 0.02 µg/g. The residual levels of PAAs and colorants detected in this study were significantly lower than the limit values established by the European Union regulation.