Determination of 4-Methylimidazole in Ammonia Caramel Using Gas Chromatography–Tandem Mass Spectrometry (GC-MS/MS)

Figure 3

Chromatogram in SCAN (a), SIM mode (b), and MRM (c) of spiked caramel ammonia (40 μg mL⁻¹ of 4-MI (A and B) and 20 μg mL⁻¹ of 2-EI (internal standard)).

(a)

(b)

(c)