Figure 2.
(a) Extracted ion chromatogram of intact and acetone-tagged FA 17:1 and FA 18:1 during photochemical reaction. (b) NLS (58 Da) of tagged FA 17:1 and FA 18:1. Inset shows the calibration curve for FA 18:1(9Z) based on NLS (IS: FA 17:1). Photochemical reaction MS spectrum of FA 20:4 (5Z, 8Z, 11Z, 14Z) using different reaction solvent conditions: (a) acetone/water (50/50, v/v) and (b) ethanol/acetone/water (40/30/30, v/v/v).