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. Author manuscript; available in PMC: 2024 Feb 12.
Published in final edited form as: Chem Res Toxicol. 2022 Jun 23;35(7):1267–1276. doi: 10.1021/acs.chemrestox.2c00110

Figure 2.

Figure 2.

1H NMR spectra for the aerosolized (A) PG + GL, (B) PG + GL + 155 mg/mL trans-cinnamaldehyde, and (C) PG + GL + 155 mg/mL trans-cinnamaldehyde+6 mg/mL nicotine illustrate the enhancing effects of trans-cinnamaldehyde and nicotine on the levels of degradation relative to PG + GL. The samples (3 puffs each) were generated at 22 W using a 1.2 Ω coil and the CORESTA puff method. The intensities were normalized to the PG methyl resonance at ~1.05 ppm. 1 = propanal; 2 = acetaldehyde; 3 = glycolaldehyde; 4 = formaldehyde; 5 = acrolein; 6 = trans-cinnamaldehyde-acetal peaks overlapped the formaldehyde hemiacetals; 7 = styrene; 8 = 5.8 ppm MAP.