After the Smoke Clears: Indoor Chemistry of Thirdhand Smoke

TitleAfter the Smoke Clears: Indoor Chemistry of Thirdhand Smoke
Publication TypeConference Paper
Year of Publication2011
AuthorsMohamad Sleiman, Peyton Jacob, III, Emma Smith, Kevin R Wilson, Musahid Ahmed, Neal L Benowitz, James F Pankow, Brett C Singer, Lara A Gundel, Hugo Destaillats
Conference NameProceedings of the Indoor Air 2011, The International Conference on Indoor Air Quality and Climate
Conference LocationAustin, TX
Keywordsasthma, indoor environment group, indoor exposure, nicotine, secondary organic aerosol (soa), tobacco specific nitrosamines
Abstract

SUMMARY

Thirdhand smoke (THS) is the residue from tobacco smoke that clings to virtually all surfaces long after a cigarette has been extinguished. The burning of tobacco releases many semivolatile organic compounds (SVOCs) such as nicotine that adsorbs strongly onto indoor surfaces (walls, floors, carpeting, drapes, and furniture). Nicotine can persist on those materials for days, weeks, and even months. Our recent studies reveal that nicotine deposited on surfaces can react with other indoor pollutants, including ozone, which seeps in from outdoors, and nitrous acid, which is common in houses with gasburning appliances. These reactions lead to the formation of carcinogenic tobacco-specific nitrosamines (TSNAs) and ultrafine particles (UFP < 100 nm) that could exacerbate or cause asthma. These findings shed light on the longterm exposure to residual tobacco smoke in indoor environments.

LBNL Report Number

LBNL-5093E