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Table 1 Exposure predictions based on analysis of aerosols generated by smoking machines: volatile organic compounds

From: Peering through the mist: systematic review of what the chemistry of contaminants in electronic cigarettes tells us about health risks

Compound N# Estimated concentration in personal breathing zone Ratio of most stringent TLV (%) Reference
PPM mg/m3 Calculated directly Safety factor 10
Acetaldehyde 1 0.005   0.02 0.2 [5]
3 0.003   0.01 0.1 [4]
12 0.001   0.004 0.04 [8]
1 0.00004   0.0001 0.001 [3]
1 0.0002   0.001 0.008 [3]
150 0.001   0.004 0.04 [40, 41]
1 0.008   0.03 3 [38]
Acetone 1 0.002   0.0003 0.003 [38]
150 0.0004   0.0001 0.001 [40, 41]
Acrolein 12 0.001   1 13 [8]
150 0.002   2 20 [40, 41]
1 0.006   6 60 [38]
Butanal 150 0.0002   0.001 0.01 [40, 41]
Crotonaldehyde 150   0.0004 0.01 0.1 [40, 41]
Formaldehyde 1 0.002   0.6 6 [5]
3 0.008   3 30 [4]
12 0.006   2 20 [8]
1 <0.0003   <0.1 <1 [3]
1 0.0003   0.1 1 [3]
150 0.01   4 40 [40, 41]
1 0.009   3 30 [38]
Glyoxal 1   0.002 2 20 [38]
150   0.006 6 60 [40, 41]
o-Methylbenzaldehyde 12   0.001 0.05 0.5 [8]
p,m-Xylene 12   0.00003 0.001 0.01 [8]
Propanal 3 0.002   0.01 0.1 [4]
150 0.0006   0.002 0.02 [40, 41]
1 0.005   0.02 0.2 [38]
Toluene 12 0.0001   0.003 0.03 [8]
Valeraldehyde 150   0.0001 0.0001 0.001 [40, 41]
  1. #Average is presented when N > 1.