Tobacco. Determination of tobacco specific nitrosamines. Method using alkaline dichloromethane extraction Ingestion-build-228203 The dimensions specified in BS

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BS 5950-9:1994 gives recommendations for the design of shear diaphragms in light gauge profiled steel sheet and the contribution of such diaphragms to the strength and stiffness of structural steelwork in buildings and allied structures

Tobacco. Determination of tobacco specific nitrosamines. Method using alkaline dichloromethane extraction Ingestion-build-228203 The dimensions specified in BS1 Scope 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) 1 (3 pyridyl) 1 butanone (NNK) in ground leaf tobacco, manufactured tobacco and tobacco products. The determination is by means of gas chromatography.