Table 1.

Substances detected in size-segregated ENDS aerosol samples generated by Air Bar (Watermelon Ice).

	Mass (ng) Based on 10 Puffs
MOUDI Stage	1	2	3	4	5	6	7	8	9	10	11
Collectible Size Range (µm)	d ≥ 18	18 ≥ d ≥ 10	10 ≥ d ≥ 5.6	5.6 ≥ d ≥ 3.2	3.2 ≥ d ≥ 1.8	1.8 ≥ d ≥ 1.0	1.0 ≥ d ≥ 0.56	0.56 ≥ d ≥ 0.32	0.32 ≥ d ≥ 0.18	0.18 ≥ d ≥ 0.1	0.1 ≥ d ≥ 0.0056
Sample Mass	3.48 × 103	5.13 × 103	1.65 × 104	1.13 × 105	5.79 × 105	1.02 × 106	6.33 × 105	2.81 × 105	6.38 × 104	1.04 × 104	3.66 × 103
Nicotine	4.86 × 102	6.99 × 102	1.36 × 103	7.61 × 103	2.64 × 104	4.88 × 104	2.76 × 104	1.45 × 104	2.98 × 103	4.27 × 102	2.92 × 102
Propylene glycol (PG)	3.16 × 101	6.23 × 101	3.70 × 102	9.19 × 103	4.00 × 104	6.93 × 104	4.65 × 104	2.34 × 104	6.70 × 103	1.69 × 102	9.99 × 101
Glycerol (VG)	2.34 × 102	1.82 × 103	8.29 × 103	9.11 × 104	4.83 × 105	8.43 × 105	5.26 × 105	2.24 × 105	4.68 × 104	3.69 × 102	3.69 × 102
Benzoic acid	BDL	9.62 × 101	7.18 × 102	3.48 × 103	2.37 × 104	5.05 × 104	2.30 × 104	1.23 × 104	1.06 × 103	1.06 × 102	8.82 × 101
Triethyl citrate	BDL	BDL	1.89	BDL	1.19 × 101	3.02 × 101	1.80 × 101	2.30 × 101	1.95 × 101	1.41 × 101	2.64 × 101
Ethyl maltol	BDL	BDL	4.48 × 10−1	8.75	1.54 × 102	1.41 × 102	1.82 × 102	7.05 × 101	2.94 × 101	1.60	2.23 × 10−1
Benzyl alcohol	BDL	BDL	BDL	BDL	1.73 × 101	2.18 × 101	2.12 × 101	2.27	7.58 × 10−1	1.25 × 10−1	BDL
Vanillin	BDL	BDL	1.45 × 10−2	1.39 × 10−1	1.93	4.54	2.25	3.27 × 10−1	4.72 × 10−2	2.12 × 10−2	BDL
Melonal	2.73 × 10−2	4.78 × 10−2	5.98 × 10−2	8.88 × 10−2	6.91 × 10−1	1.48	7.75 × 10−1	1.06 × 10−1	5.12 × 10−2	2.56 × 10−2	1.55 × 10−2
3-Hexen-1-ol	1.36 × 10−1	1.14 × 10−1	1.14 × 10−1	8.96 × 10−2	9.96 × 10−2	6.27 × 10−2	9.28 × 10−2	9.42 × 10−2	7.55 × 10−2	7.62 × 10−2	7.40 × 10−2
Methyl dihydrojasmonate	1.38 × 10−2	1.76 × 10−2	2.91 × 10−2	3.86 × 10−2	2.85 × 10−1	6.49 × 10−1	3.35 × 10−1	4.76 × 10−2	2.38 × 10−2	1.25 × 10−2	7.32 × 10−3
γ-Decalactone	1.56 × 10−1	2.64 × 10−1	3.29 × 10−1	4.63 × 10−1	3.18	7.44	3.62	7.07 × 10−1	3.70 × 10−1	1.97 × 10−1	1.19 × 10−1
Chromium	1.74 × 101	1.71 × 101	1.57 × 101	1.75 × 101	1.40 × 101	1.87 × 101	1.68 × 101	1.55 × 101	2.20 × 101	1.53 × 101	1.59 × 101
Nickel	3.60	4.30	3.20	3.30	2.10	1.30 × 101	1.66 × 101	2.37 × 101	1.90 × 101	1.38 × 101	2.67 × 101
Manganese	1.80	1.60	1.40	7.00 × 10−1	1.48 × 101	3.70	2.80	2.10	2.30	1.10	2.10
Lead	7.70	7.10	2.10	4.40	4.20	1.90	3.80	3.20	5.70	1.68 × 101	1.80
Aluminum	7.68 × 101	6.61 × 101	4.00 × 101	3.40 × 101	5.93 × 101	1.21 × 102	9.54 × 101	1.73 × 102	1.37 × 102	8.25 × 101	7.78 × 101
Zinc	5.67 × 101	6.55 × 101	5.15 × 101	3.15 × 101	3.12 × 101	1.90 × 102	1.88 × 102	6.62 × 101	1.04 × 102	8.60 × 101	6.44 × 101

d: collectible particle diameters (µm); BDL: below detection limit.