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Ensuring the safety of baby bottle teats and kitchen tools made from rubber is critical. Therefore, the migration of N -nitrosamines and N -nitrosatable substances from 30 teats and 45 kitchen tools to artificial saliva was analyzed by liquid chromatography-tandem mass spectrometry. The method was validated by assessing the limits of detection (0.46-3.87 μg/kg), limits of quantification (1.38-11.73 μg/kg), and recoveries (86.3-108.6%) of seven compounds. Nitrosodimethylamine (NDMA), N -nitrosopiperidine, and N -nitrosomorpholine (NMOR) migrated from baby bottle teats at concentrations of not detected (ND) to 3.67 μg/kg. NDMA and NMOR concentrations ranged from ND to 1.72 μg/kg after migration from 45 rubber kitchen tools. N -nitrosatable substances ranged from ND to 42.16 μg/kg after migration from baby bottle teats but did not migrate from rubber kitchen tools. All tested products were considered safe for use, as N -nitrosamine and N -nitrosatable substance levels did not exceed the permitted management specifications.

Release of N-nitrosamines and N-nitrosatable substances from baby bottle teats and rubber kitchen tools in Korea