Figure 6From: Simultaneous determination of methylcarbamate and ethylcarbamate in fermented foods and beverages by derivatization and GC-MS analysisSIM chromatograms after the derivatization of NMC, EC and BC from spiked food (top=25 μg/kg, middle=5 μg/kg) and real sample (bottom). 1=Xanthyl methylcarbamate, 2=Xanthyl ethylcarbamate, 3=Xanthyl butylcarbamate (ISTD).Back to article page