Rapid, On-Site Identification of 5 Phenolic Compounds in Toys by Ion Mobility Spectrometry with In-Situ Ionization

Ion mobility spectrometry was applied to rapid, on-site identification of 5 phenolic compounds in toys with in-situ ionization. Without any sample pretreatment, the toy sample was ionized with in-situ ionization (extractive nanoliter-electrospray or paper spray). The inspection could be completed within 11 ms. The detection limits (3S/N) of the 5 phenolic compounds were in the range of 0.5-1.5 mg·kg^-1. The suspicious positive sample was subjected to further verification by HPLC-MS/MS, which gave confirmable results.