Table 2.

Substances detected in size-segregated ENDS aerosol samples generated by Puff Bar (Grape).

	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	4.15 × 103	2.22 × 103	7.14 × 103	3.08 × 104	3.19 × 105	8.16 × 105	6.56 × 105	1.50 × 105	3.34 × 104	2.06 × 103	8.82 × 102
Nicotine	1.21 × 102	6.40 × 101	2.06 × 102	8.33 × 102	8.53 × 103	1.86 × 104	1.49 × 104	3.34 × 103	1.04 × 103	1.63 × 102	1.81 × 102
Propylene glycol (PG)	BDL	BDL	5.10 × 101	4.59 × 102	1.89 × 104	4.41 × 104	3.63 × 104	9.08 × 103	2.18 × 103	5.94 × 101	3.41 × 101
Glycerol (VG)	1.38 × 103	BDL	3.30 × 103	1.70 × 104	2.87 × 105	7.44 × 105	5.97 × 105	1.34 × 105	2.83 × 104	1.75 × 102	2.94 × 101
Benzoic acid	1.47 × 101	BDL	2.91 × 102	1.10 × 102	1.47 × 103	4.57 × 103	4.12 × 103	1.58 × 103	3.78 × 102	1.72 × 101	1.31
Triethyl citrate	BDL	BDL	1.10	2.36	4.25 × 101	1.47 × 102	1.36 × 102	1.69 × 101	4.97	2.33 × 10−1	BDL
Ethyl maltol	7.47 × 10−1	5.81 × 10−1	9.10 × 10−1	4.64	1.07 × 102	2.83 × 102	2.03 × 102	3.73 × 101	9.64	7.27 × 10−1	2.86 × 10−1
Methyl anthranilate	1.57 × 10−2	1.64 × 10−2	2.23 × 10−2	3.06 × 10−2	8.73 × 10−2	3.09 × 10−1	2.75 × 10−1	4.56 × 10−2	3.31 × 10−2	1.45 × 10−2	1.34 × 10−2
α-Terpineol	2.98 × 10−2	2.29 × 10−2	3.45 × 10−2	4.18 × 10−2	1.14 × 10−1	1.89 × 10−1	1.38 × 10−1	6.80 × 10−2	4.18 × 10−2	2.58 × 10−2	2.24 × 10−2
3-Hexen-1-ol	7.58 × 10−2	9.03 × 10−2	8.99 × 10−2	8.18 × 10−2	7.84 × 10−2	8.64 × 10−2	8.36 × 10−2	7.91 × 10−2	6.90 × 10−2	8.50 × 10−2	6.76 × 10−2
Perillartine	BDL	3.79 × 10−4	8.51 × 10−4	1.70 × 10−3	9.20 × 10−3	3.42 × 10−2	3.74 × 10−2	3.98 × 10−3	2.57 × 10−3	BDL	BDL
Chromium	9.80	8.60	9.50	8.10	1.24 × 101	7.70	5.10	3.90	4.80	3.80	3.00
Nickel	3.40	1.60	2.00	5.50	2.90	8.30	5.90	2.80	3.50	5.90	1.65 × 101
Manganese	1.20	8.00 × 10−1	1.51 × 101	3.80	4.00 × 10−1	1.70	1.20	6.00 × 10−1	3.00 × 10−1	1.00	3.00 × 10−1
Lead	1.70	1.30	7.00 × 10−1	4.00 × 10−1	6.00 × 10−1	1.60	5.00 × 10−1	3.00 × 10−1	5.00 × 10−1	1.40	4.00 × 10−1
Aluminum	5.39 × 101	5.50 × 101	3.32 × 101	3.89 × 101	3.63 × 101	4.06 × 101	2.66 × 101	2.40 × 101	4.30 × 101	2.56 × 101	2.56 × 101
Zinc	9.17 × 101	3.39 × 101	2.37 × 101	6.43 × 101	6.74 × 101	1.14 × 102	9.58 × 101	2.00 × 101	1.94 × 101	2.70 × 101	1.19 × 101

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