Table 1.
Average proportion of organic chemicals detected in vape fluid and on white cotton towels exposed to ENDS aerosols compared to white cotton towels with no ENDS aerosols
| Cumulative frequency | Chemical | Control towel samples (not exposed to mice) | Control towel samples (exposed to mice) | ENDS-contaminated towel samples (not exposed to mice) | ENDS-contaminated towel samples (exposed to mice) | Vape fluid |
|---|---|---|---|---|---|---|
| A. Chemicals found in vape fluid only | ||||||
| 1 | nicotine | 0% | 0% | 0% | 0% | 84% |
| B. Chemicals found in vape fluid and exposed towels only | ||||||
| 2 | 4-methyl-1,2-dioxolane | 0% | 0% | 1% | 3% | 12% |
| 3 | 4-methyl-cyclohexanol | 0% | 0% | 0% | 1% | 1% |
| C. Chemicals found only in exposed towels compared to control towels | ||||||
| 4 | 2,4-dimethylfuran | 0% | 0% | 0% | 1% | 0% |
| 5 | 2,5-dimethylfuran | 0% | 0% | 0% | 1% | 0% |
| 6 | hexanal | 0% | 0% | 0% | 1% | 0% |
| D. Chemicals found in higher proportion in exposed towels compared to control towels | ||||||
| 7 | 1-methyl-1H-pyrrole | 2% | 2% | 2% | 4% | 0% |
| 8 | 2-methyl propanal | 7% | 7% | 2% | 11% | 0% |
| 9 | 3-methyl-butanal | 2% | 2% | 1% | 4% | 0% |
| E. Other detected chemicals | ||||||
| 10 | 1-chlorooctane | 1% | 0% | 0% | 1% | 0% |
| 11 | 1-octene | 0% | 0% | 0% | 0% | 0% |
| 12 | 2,3-dihydrofuran | 6% | 3% | 2% | 6% | 0% |
| 13 | 2,3-pentadione | 3% | 2% | 1% | 2% | 0% |
| 14 | 2,5,6-trimethyldecane | 5% | 3% | 2% | 3% | 0% |
| 15 | 2,4-Dihydroxy-2,5-dimethyl-3(2H)-furan-3-one | 3% | 1% | 1% | 2% | 0% |
| 16 | 2-ethyl-4-methyl-1,3-dioxolane | 0% | 0% | 0% | 0% | 0% |
| 17 | 2-methyl-2-pentene | 1% | 1% | 0% | 1% | 0% |
| 18 | 3,4-pentadienal | 3% | 2% | 1% | 2% | 0% |
| 19 | 5-ethyl decane | 5% | 3% | 2% | 3% | 0% |
| 20 | dimethyldisulfide | 0% | 1% | 0% | 1% | 0% |
| 21 | benzyl chloride | 0% | 0% | 0% | 0% | 0% |
| 22 | Diazene | 3% | 5% | 0% | 5% | 0% |
| 23 | furfural | 44% | 33% | 8% | 23% | 0% |
| 24 | methacrolein | 0% | 0% | 0% | 0% | 0% |
| 25 | methylene chloride | 0% | 0% | 0% | 0% | 0% |
| 26 | 2-aminocyanoacetamide | 12% | 31% | 74% | 21% | 3% |
Nicotine was the only chemical detected in the fluid that was also not detected on either towel sample type (1A); 1B shows chemicals that were detected in vape fluid and exposed towels; 1C consists of chemicals found only on exposed towels and 1D contains chemicals that were, on average, detected more on exposed towels compared to controls; 1E lists chemicals that were detected at equal or lower proportions compared to control towels, except for 2-aminocyanoacetamide, which was in all samples at different proportions. ENDS: electronic nicotine delivery systems.