Parameters Control T1 T2 T3 Peak Intensity at m/z = 46 60.47 43.16 62.16 63.78 Peak Intensity at m/z = 47 26.13 18.75 21.51 31.85 Ratio of peak intensityat m/z = 47 to m/z = 46 0.4321 0.4344 0.3460 0.4993

Table 2: GC-MS isotopic abundance analysis result of ethanol.