Table 2.

Content comparison of the most common carbonyl compounds from e-cigarettes versus conventional tobacco cigarettes consumption

	Formaldehyde (μg)	Acetaldehyde (μg)	Acrolein (μg)	References
E-cigarette (unit = 15 puffs)	0.2–5.61	0.11–1.36	0.07–9	[4, 68]
Conventional cigarette (unit)	1.6–52.1	52–828	2.4–98.2	[51, 62]