Fig. 3
From: Concentrations of nicotine, nitrosamines, and humectants in legal and illegal cigarettes in Mexico
Nitrosamines mean levels by brand variety and legality (Mexico 2014). The global mean of NNK levels for legal brands was 293.1 mg/g, and for legal brands, it was 217.74 mg/g. For NAT levels, it was 1087.5 mg/g for legal brands, compared to 738.53 mg/g for illegal brands. For NNN levels, it was 1269.07 mg/g for legal brands and 1352.45 mg/g for illegal brands. And for NAB levels, it was 58.51 mg/g for legal brands and 57.28 mg/g for illegal brands