Dynamic behavior of semivolatile organic compounds in indoor air. 1. nicotine in a stainless steel chamber

Article Abstract:

More than 80% of the nicotine emitted into a sealed stainless steel chamber, to examine its sorption to the chamber's walls, was not detected even if the emission of nicotine was done through flash evaporation and cigarette combustion. Results indicate that more than 85% of gas phase, airborne particle-phase, and wall-sorbed nicotine can be measured using solvent extraction. The method, however, is unreliable because of the presence of triethylamine. Alternative models to determine nicotine interactions with stainless steel surfaces are proposed which include irreversible sorption with first-order, second-order, and Langmuir kinetics and a surface-catalyzed reaction linked to nonlinear sorption.

Iron and Steel Mills, Blast furnaces and steel mills, Medicinal and Botanical Manufacturing, Medicinals and botanicals, Stainless Steel, Nicotinic Acid, Models, Nicotine, Absorption, Bulk vitamins, Steel, Stainless, Niacin

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Volatile N-nitrosamines in environmental tobacco smoke: sampling, analysis, emission factors, and indoor air exposures

Article Abstract:

Emission factors for two major volatile N-nitrosamines (VNA) in environmental tobacco smoke (ETS) were determined in a room-sized chamber for six commercial cigarette brands, using a more convenient sampling and analysis technique which utilizes Thermosorb/N cartridges. Average emission factors for N-nitrosodimethylamine and N-nitrosopyrrolidine for the six brands were 565 plus or minus 115 and 104 plus or minus 20 ng per cigarette. These emission factors were used to estimate VNA exposures from ETS in a typical office building an an average residence. For these scenarios, indoor concentrations of N,N-dimethylnitrosamine from ETS were lower than 10% of the reported median outdoor concentration.

Environmental aspects, Indoor air quality, Cigarette smoke, Nitrosoamines

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