No

Compounds

e-liquid (n = 72)

Aerosol (n = 72)

P Value

1

Acrolein [2-Propenal]

0

57

<0.0001

2

Acetic acid

0

45

<0.0001

3

Nicotyrine

0

41

<0.0001

4

2-Propen-1-ol

0

39

<0.0001

5

α-Nicotine[Pyridine, 2-(1-methyl-2 pyrrolidinyl)-

0

35

<0.0001

6

1-Propen-2-ol, acetate

0

35

<0.0001

7

1,3-Dioxan-5-ol

0

33

<0.0001

8

Ethanol

0

30

<0.0001

9

1,3-Dioxane, 2-methyl-

0

27

<0.0001

10

Glycidol

0

23

<0.0001

11

Acetic formic anhydride

0

19

<0.0001

12

1,2-Propanediol, 3-chloro

0

16

<0.0001

13

Acetaldehyde, chloro-

0

14

<0.0001

14

Acetone

0

13

0.0002

15

Butanoic acid, 2,3-dihydroxypropyl ester

0

12

0.0003

16

1,2-Propanediol, diformate

0

10

0.001

17

1,3-Propanediol, diacetate

0

10

0.001

18

Acetaldehyde

0

10

0.001

19

1H-Pyrazole, 4-chloro-

0

9

0.003

20

Isopropyl alcohol

0

9

0.003

21

β-D-Glucopyranose, 1,6-anhydro-

0

9

0.003

22

Oxalacetic acid

0

8

0.006

23

Isopropyl acetate

0

7

0.01

24

2,3-Butanedione

0

7

0.01