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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Atmos Environ (1994). 2014 Jun 12;95:142–150. doi: 10.1016/j.atmosenv.2014.06.027

Scheme 2.

Scheme 2

(a). Acetaldehyde-based chain reactions of acetyl radical generation in tobacco smoke. (b). The flowchart of acetyl radical cycling and sinks in gas phase.