Concentrations of Nicotine and Tobacco Smoke in Public Places

Abstract
PUBLIC interest has focused on health effects to the large numbers of nonsmokers exposed to tobacco smoke in public places. Recent regulations in a few cities have banned smoking in public places, or have restricted smoking in the manner of United States commercial aircraft.Two studies1 , 2 indicated that in crowded private rooms concentrations of tobacco smoke often exceed 260 μg per cubic meter, the federal air-quality standard for paniculate matter that is not to be exceeded more than one day per year. Hoegg1 estimated that in residences, meeting rooms, or private automobiles, the nonsmoker inhales in one hour the equivalent . . .