This Technical Specification specifies the procedure for the determination of the tobacco specific nitrosamines
(TSNAs): N-nitrosonornicotine (NNN), N-nitrosoanatabine (NAT), N nitrosoanabasine (NAB) and
4-(methylnitrosamino)-l-(3-pyridyl)-l-butanone (NNK) in ground leaf tobacco, manufactured tobacco and
tobacco products The determination is by means of gas chromatography.