The tobacco flavor, which is a special smell diffusing from
tobacco, forms the important aspect of the tobacco intrinsic
quality. Nicotine is the major ingredient of *0 kinds of tobacco
aromatic substances. More sensitive and effective methods are
needed to analyze the tobacco aromatic substances. Nicotine is not
only the main ingredient of the tobacco aromatic substance, but
also the ingredient with the maximal content in the ***-plus
volatile and semi-volatile chemical compositions in the cigarette
smoke.