Table 4 Association between constituents in tobacco and smoke emissions.
ISO emissionsCanadian Intense emissions
Tobacco constituentsCorrelationMean transfer %† (SD)CorrelationMean transfer % (SD)
Alkaloids
    Nicotine (μg/g)0.28***3.6 (1.6)0.44***7.9 (2.9)
Metals
    Lead (ng/g)0.63***4.9 (2.1)0.73***11.8 (3.9)
    Cadmium (ng/g)0.36**6.8 (2.7)0.59***19.5 (5.4)
    Mercury (ng/g)0.0211.7 (2.7)0.56***25.8 (4.3)
Nitrosamines
    NNN (ng/g)0.94***7.4 (2.7)0.96***15.6 (4.7)
    NNK (ng/g)0.62***9.8 (3.7)0.54***20.9 (7.9)
    NAT (ng/g)0.52***8.0 (3.8)0.49***16.8 (7.6)
Other
    Ammonia (μg/g)0.30**3.6 (1.6)0.87***7.9 (2.9)
    Benzo[a]pyrene (ng/g)0.84***0.89***
    Nitrate (mg/g) vs nitric oxide (μg)0.87***0.93***
    Nitrate (mg/g) vs NOx (μg)0.88***0.94***
  • NNN, N-nitrosonornicotine; NNK, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone; NAT, N-nitrosoanatabine.

  • *p<0.05, **p<0.01, ***p<0.001.

  • †Transfer % = constituent levels/smoke emission level.

  • NAB excluded owing to insufficient data (n = 5).

  • Brands with levels below detectable limits were excluded from each analysis.