A pilot study of the behavior of gas- and particle-phase ETS tracers in residences

TitleA pilot study of the behavior of gas- and particle-phase ETS tracers in residences
Publication TypeConference Proceedings
Year of Publication2002
AuthorsMichael G Apte, Lara A Gundel, Raymond L Dod, Gee-Minn Chang, Richard G Sextro
Conference NameProceedings of the Indoor Air 2002 Conference, Monterey, CA
PublisherIndoor Air 2002, Santa Cruz, CA
Keywordsenvironmental tobacco smoke, exposure assessment, field study, FPM, nicotine, Residence, sorption, UVPM

Our previous study of environmental tobacco smoke (ETS) in a three-room environmental chamber showed that smoking history significantly influenced inter-room ETS transport, particularly of gas-phase nicotine. We conducted a three-home pilot study where smoking was limited to one room. Single-smoker residences were monitored during five one-week periods while the smoker participated in a smoking cessation program. Nicotine traced ETS particles were detected reliably in the smoking rooms (SRs) and unreliably in the non-smoking rooms (NSRs). On average, the ventilation- and volume-normalized smoking rate, 0.1 Cigarette-h-1m-3, added about 17 and 4 µg m-3 of ETS particles into the SR and NSR, while average nicotine concentration increases were 2 and 0.06 µg m-3, respectively. Thus, nicotine tracers may underestimate ETS particle exposure in a NSR (e.g., a child's bedroom) by a factor of 2 to 8. In other words, ETS exposure predicted from nicotine concentrations could be almost an order of magnitude lower than actual exposure.