Chemical Studies on Tobacco Smoke XXXIV. Gas Chromatographic Determination of Ammonia In Cigarette and Cigar Smoke

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Abstract
A method is described for the determination of ammonia in cigarette and cigar smoke. After the tobacco products are smoked through acid traps, their contents are concentrated and then analyzed by gas chromatography using a barium oxide precolumn for the removal of water. Methylamine-14C served as internal standard. The mainstream smoke of the standard cigarette (85 mm, without filter tip) was found to contain 131 ±6.7 µg ammonia. The mainstream smoke of plain cigarettes, filter cigarettes, little cigars, cigars, and a marijuana cigarette contained between 80 and 300 µg of ammonia; sidestream smoke of cigarettes and little cigars delivered 40–73 times higher amounts of ammonia than mainstream smoke; a Manila cigar yielded 670 times more ammonia in the sidestream smoke than in the mainstream smoke. A study of five cigar tobaccos indicated that their mainstream smoke yields highest ammonia values when smoked in the form of cigarettes, medium values when smoked in the form of little cigars, and the lowest values when smoked in the form of cigars.

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