Smokers' lung cancer risk related to the cigarette-generated mainstream particles

Particle concentrations equal to 3-6×108 part. cm−3, 60-120 mm2 cm−3, and 5-9 g m−3 for number, surface area and mass metrics, respectively, were measured. Most probable ELCR values ranged from 2×10−1 to 6×10−1 with the higher contribution due to the tobacco-specific nitrosamines and a minor (but still not negligible) contribution of B[a]p, Cd, and As.