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. 2021 Sep 30;9:743060. doi: 10.3389/fchem.2021.743060

TABLE 5.

Means (per collection) and ANOVA results for analytes with at least one quantifiable result.

Analyte CM DC GT AMB P
ACM, mg 377 A 369 A 354 A 0.00 B <0.001
“Tar,” mg 273 A 266 A 258 A 0.18 B <0.001
VG, mg 147 B 190 A 152 B 0.13 C <0.001
PG mg 105 A 73.1 B 66.9 B 0.13 C <0.001
Water, mg 98.5 A 97.6 A 91.7 A 0.30 B <0.001
Nicotine, mg 5.18 A 4.88 A 4.65 A 0.015 B <0.001
Menthol, mg 0.613 A 0.121 B 0.014 C 0.006 C <0.001
Allyl alcohol, µg 1.06 B 4.08 A 0.64 B 0.03 B <0.001
Formaldehyde, µg 59.0 A 17.5 A B 39.8 A B 3.32 B 0.018
Acetaldehyde, µg 18.0 A 7.71 A B 10.3 A B 0.91 B 0.026
Acetone, µg 6.15 A B 6.94 A 4.84 B 2.40 C <0.001
Propionaldehyde, µg 6.01 A 4.94 A B 2.30 B C 0.12 C <0.001
Acrolein, µg 19.2 A 12.3 A 12.4 A 0.230 B 0.002
Glycolaldehyde, µg 9.95 A 2.43 AB 8.16 AB 0.187 B 0.02
Glyoxal, µg 4.78 A 1.71 AB 2.97 AB 0.063 B 0.013
Methylglyoxal, µg 6.46 A 6.26 A 5.24 A 0.039 B 0.005
Nicotine-N-oxide, µg 1.89 B 4.37 A 1.60 B 0.44 C <0.001
Cotinine, µg 0.855 B 1.37 B 5.64 A 0.14 B <0.001
Myosmine, µg 0.815 B 1.95 B 6.23 A 0.22 B <0.001
Nornicotine, µg 2.57 B 7.39 A 2.52 B 0.12 C <0.001
β-Nicotyrine, µg 0.658 B 2.20 A 0.095 C 0.095 C <0.001
Chromium, ng 37.6 A 41.8 A 33.3 A 42.3 A 0.227
Iron, ng 26.5 A 95.6 A 14.3 A 22.6 A 0.222
Zinc, ng 52.9 A 96.5 A 44.1 A 38.1 A 0.119
Naphthalene, ng 16.9 A 15.4 A 19.6 A 15.9 A 0.596
Benzo(a)anthracene, ng 0.92 A 0.79 A 1.23 A 1.00 A 0.333
Chrysene, ng 2.40 A 2.38 A 2.98 A 2.75 A 0.445
Propylene oxide, µg 338 B 808 A 182 B C 78 C <0.001
2-aminonaphthalene, ng 0.106 A 0.187 A 0.201 A 0.153 A 0.625
3-aminobiphenyl, ng 0.035 A 0.059 A 0.070 A 0.043 A 0.471
4-aminobiphenyl, ng 0.028 A 0.031 A 0.067 A 0.030 A 0.300
o-toluidine, ng 0.923 A 0.995 A 1.037 A 0.823 A 0.733
Ammonia, µg 9.30 A 9.25 A 7.70 A 6.02 A 0.241

The use of the letters A, B, C and D in the table indicates whether the differences in the mean values between products or AMB are statistically significant or not. For a particular analyte, results for products that share the same letter are not significantly different, and where the letters differ the means are significantly different.