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Evaluation of Presence or Absence of α-Tocopherol and α-Tocopheryl Acetate in Various E-Liquids

Serban C. Moldoveanu
Serban C. Moldoveanu
   | Apr 20, 2021
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Published Online: Apr 20, 2021
Page range: 44 - 49
Received: Oct 21, 2020
Accepted: Feb 11, 2021
DOI: https://doi.org/10.2478/cttr-2021-0005
Keywords
© 2021 Serban C. Moldoveanu, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Figure 1

The HPLC chromatogram with UV detection for the “Quanta” sample.
The HPLC chromatogram with UV detection for the “Quanta” sample.

Figure 2

The ion trace for α-tocopherol in the LC-MS/MS chromatogram for the “Quanta” sample.
The ion trace for α-tocopherol in the LC-MS/MS chromatogram for the “Quanta” sample.

List of e-liquids containing nicotine evaluated for the presence of α-tocopherol and/or α-tocopheryl acetate (nicotine level, and content of glycerin and PG indicated when available).

No. Brand Flavor Nicotine mg/g Glycerin % (w/w) PG % (w/w)
1 Kilo Dewberry Cream 8.57 61.72 29.53
2 Frequency Liquid Boom Box 2.35 73.27 21.75
3 ZVR Lemon Cheesecake 5.25 54.70 32.42
4 OKVMI Haute Mocha 5.64 48.09 23.42
5 CRFT Gravel Pit 3.22 53.10 40.18
6 Noca Elixirs Bezoar 2.28 78.72 13.49
7 Cosmic Fog The Shocker 2.25 73.55 15.50
8 Clancy's Riptide – 9.28 69.97 21.96
9 AlfaLiquid Noble Leaf 2.56 49.80 47.54
10 Virgin Vapor Best Damn Tobacco 11.76 86.90 –
11 Series 8 Strawnilla – 48.40 43.65
12 Five Pawns Mixology Edition 2.45 53.97 36.63
13 Vype Aniseed 10.83 50.78 30.88
14 BRV Colonel's Custard 2.43 49.83 42.07
15 Taffy Man TR4 BLU 0.17 77.93 18.06
16 Bad Drip Bad Blood 2.24 69.47 20.69
17 Henley Brighton Peach 1.86 57.14 36.46
18 Cuttwood Boss Reserve 2.11 65.14 24.27
19 Kings Crest Duchess 8.97 77.00 11.30
20 Haus Berry 22.06 25.33 59.93
21 Haus Ocean Mist 22.55 23.20 59.56
22 VaporFi ? 10.91 52.79 41.88
23 X2O Natural Tobacco 17.77 60.93 35.39
24 Dewwy Bobba – 4.60 72.24 20.72
25 Njoy Para Mour ? 54.25 38.58
26 ALD Group Mango (1) 50 mg/mL a ? ?
27 ALD Group Mint (1) 50 mg/mL a ? ?
28 ALD Group Crème (1) 50 mg/mL a ? ?
29 ALD Group Mango (2) 50 mg/mL a ? ?
30 ALD Group Mint (2) 50 mg/mL a ? ?
31 ALD Group Crème (2) 50 mg/mL a ? ?
32 ALD Group Fruit Medley 50 mg/mL a ? ?
33 Leap GO Mint 50 mg/mL a ? ?
34 JUUL Classic Tobacco 50 mg/mL a ? ?

Coefficients and R2 for the calibration curves Y = a X + b used in quantitation with MS/MS detection.

Compound Detection type a b R2
α-Tocopherol MS/MS 34.2270 −1.00506 0.9997
α-Tocopheryl acetate MS/MS 10.7472 −1.3916 0.9997

Coefficients and R2 for the calibration curves Y = a X + b used in quantitation with UV detection.

Compound Detection type a b R2
α-Tocopherol UV 0.022401 −0.05633 1.00
α-Tocopheryl acetate UV 0.022655 −0.05204 1.00

List of e-liquids containing CBD evaluated for the presence of α-tocopherol and/or α-tocopheryl acetate.

No. Brand Flavor CBD mg/mL Glycerin % (w/w) PG % (w/w)
1 Korent Fresh mint 10.0 ? ?
2 Kore Organic Blueberry mist ? ? ?
3 Quanta Bubble mint 1.75/serv. – –
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