Fig. 3From: Examination of paraben release from baby teethers through migration tests and GC–MS analysis using a stable isotope dilution assayGC–MS chromatograms (target screening) of saliva simulant migration test solutions of a calibration level 75 µg 100 mL−1 and b baby teether no. 4. Extracted ion traces of paraben quantifier ions m/z 224 for trimethylsilylated methylparaben (MeP) and m/z 193 for trimethylsilylated ethylparaben (EtP) as well as trimethylsilylated n-propylparaben (n-PrP)Back to article page