Table 3.

Firsthand and secondhand VOC exposure level.

CASRN	CID	Firsthand emission (µg/puff)					Secondhand emission (µg/puff)
		Low	Med	High	Overall	Detection freq. (%)	Low	Med	High	Overall	Detection freq. (%)
50-00-0	Formaldehyde	14.98 ± 12.96	0.81 ± 0.43	1.22 ± 0.17	5.18 ± 3.97	100	1.52 ± 0.67	2.04 ± 0.11	1.85 ± 0.2	1.83 ± 0.2	100
57-55-6	1,2-Propanediol (propylene glycol)	474.88 ± 67.78	1015.53 ± 293.37	1864.76 ± 343.45	1108.1 ± 229.08	100	41.49 ± 22.46	47.52 ± 38.19	46 ± 41.13	45.26 ± 18.48	90
111-71-7	Heptanal (heptaldehyde)	0.24 ± 0.06	0.22 ± 0.03	0.45 ± 0.17	0.3 ± 0.06	100	0.3 ± 0.16	0.21 ± 0.08	0.34 ± 0.12	0.27 ± 0.06	80
75-07-0	Acetaldehyde	5.26 ± 4.24	1.35 ± 0.55	0.9 ± 0.27	2.39 ± 1.28	90	1.06 ± 0.48	0.71 ± 0.33	1.43 ± 0.5	1.03 ± 0.24	90
112-31-2	Decanal	0.19 ± 0.1	0.53 ± 0.15	0.68 ± 0.34	0.47 ± 0.12	90	0.17 ± 0.12	0.17 ± 0	0.59 ± 0.29	0.29 ± 0.1	90
13444-24-1	3-Piperidinol, 1-ethyl-	4.07 ± 3.91	21.22 ± 13.64	7.7 ± 2.06	12.02 ± 5.71	90	0.01 ± 0.01	0.55 ± 0.19	0.55 ± 0.04	0.39 ± 0.11	80
124-19-6	Nonyl aldehyde (nonanal)	0.48 ± 0.24	0.64 ± 0.25	1.17 ± 0.23	0.75 ± 0.16	80	0.57 ± 0.29	0.22 ± 0.1	1.18 ± 0.49	0.61 ± 0.2	80
54-11-5	Pyridine, 3-(1-methyl-2-pyrrolidinyl)-, (S)-(nicotine)	0.42 ± 0.38	2.75 ± 2.26	10.25 ± 2.36	4.3 ± 1.69	80	0.11 ± 0.11	0.08 ± 0.08	0.17 ± 0.17	0.12 ± 0.06	40
6846-50-0	TXIB (2,2,4-trimethyl-1,3-pentanediol diisobutyrate)	0.04 ± 0.04	0.08 ± 0.01	0.09 ± 0.03	0.07 ± 0.02	80	0.02 ± 0.02	0.01 ± 0.01	0.15 ± 0.06	0.06 ± 0.03	60
66-25-1	Hexanal	0.24 ± 0.06	0.21 ± 0.13	1.12 ± 0.38	0.49 ± 0.18	80	0.52 ± 0.29	0.31 ± 0.11	0.62 ± 0.22	0.47 ± 0.11	80
108-88-3	Toluene (methylbenzene)	0.14 ± 0.1	0.14 ± 0.11	0.91 ± 0.45	0.37 ± 0.17	70	0.32 ± 0.16	0.37 ± 0.17	0.23 ± 0.08	0.31 ± 0.08	80
1330-20-7	Xylenes (total)	0.19 ± 0.07	0.05 ± 0.05	0.18 ± 0.03	0.13 ± 0.03	70	0.15 ± 0.08	0.27 ± 0.13	0.17 ± 0.08	0.2 ± 0.06	70
102-76-1	1,2,3-Propanetriol, triacetate (triacetin)	0.32 ± 0.26	1.27 ± 1.01	0.76 ± 0.41	0.83 ± 0.41	70	0.08 ± 0.08	0.08 ± 0.05	0.16 ± 0.05	0.11 ± 0.03	60
80-56-8	Pinene, alpha (2,6,6-trimethyl-bicyclo[3.1.1]hept-2-ene)	0.06 ± 0.05	0.03 ± 0.03	0.04 ± 0.02	0.04 ± 0.02	50	0.14 ± 0.14	0.27 ± 0.12	0.19 ± 0.04	0.21 ± 0.06	70
71-36-3	1-Butanol (N-butyl alcohol)	0.25 ± 0.13	0.15 ± 0.09	0.6 ± 0.6	0.32 ± 0.18	50	0.63 ± 0.32	0.21 ± 0.11	0.84 ± 0.34	0.53 ± 0.15	80
100-42-5	Styrene	0.11 ± 0.06	0 ± 0	0.18 ± 0.08	0.09 ± 0.04	50	0.2 ± 0.11	0.22 ± 0.07	0.17 ± 0.05	0.2 ± 0.04	80
64-17-5	Ethanol	0 ± 0	18.71 ± 8	4.35 ± 4.35	8.79 ± 4.17	40	10.87 ± 5.91	19.07 ± 9.05	44.17 ± 20.06	24.14 ± 7.78	80
104-76-7	1-Hexanol, 2-ethyl	0.39 ± 0.26	0.33 ± 0.22	0 ± 0	0.25 ± 0.12	50	0.52 ± 0.3	0.44 ± 0.15	0.62 ± 0.07	0.52 ± 0.1	80
629-59-4	Tetradecane	0.11 ± 0.06	0.03 ± 0.02	0 ± 0	0.05 ± 0.02	40	0.1 ± 0.05	0.09 ± 0.05	0.1 ± 0.06	0.1 ± 0.03	80
124-13-0	Octanal	0.87 ± 0.6	0.15 ± 0.15	0 ± 0	0.32 ± 0.2	40	0.54 ± 0.28	0.3 ± 0.11	0.89 ± 0.18	0.55 ± 0.12	80

Low: puff volumes < 90 mL/puff; Medium: 90 mL/puff < puff volumes < 150 mL/puff; High: puff volumes > 150 mL/puff.