Fig. 3From: A rapid method for quantifying free and bound acetate based on alkylation and GC-MS analysisGC chromatogram for acetate derivative (propyl-acetate). a Total ion chromatogram. b–d Extracted ion chromatograms for 12C-, U-13C-, and 2H3-acetate, respectively. Ions m/z 61, 63, and 64 (structure of ions are indicated) were used for absolute quantificationBack to article page