Nicotine deposited on the surfaces has been shown to react with airborne chemicals leading to formation of carcinogens and contributing to thirdhand exposure. While prior studies revealed nicotine residues in tobacco smokers’ homes, none have examined the nicotine residue in electronic cigarette (e-cigarette) users’ homes. The authors measured nicotine on the surfaces in households of 8 e-cigarette users, 6 cigarette smokers, and 8 non-users of nicotine-containing products in Western New York, USA. Three surface wipe samples were taken from the floor, wall and window. Nicotine was extracted from the wipes and analysed using gas chromatography. Half of the e-cigarette users’ homes had detectable levels of nicotine on surfaces whereas nicotine was found in all of the tobacco cigarette smokers’ homes. Trace amounts of nicotine were also detected in half of the homes of non-users of nicotine-containing products. Nicotine levels in e-cigarette users homes was significantly lower than that found in cigarette smokers homes (average concentration 7.7±17.2 vs. 1303±2676?g/m(2); p<0.05). There was no significant difference in the amount of nicotine in homes of e-cigarette users and non-users (p>0.05). The authors concluded that nicotine is a common contaminant found on indoor surfaces. Using e-cigarettes indoors leads to significantly less thirdhand exposure to nicotine compared to smoking tobacco cigarettes.
Authors: Bush D, Goniewicz ML. ;Full Source: International Journal of Drug Policy. 2015 Jun;26(6):609-11. doi: 10.1016/j.drugpo.2015.03.003. Epub 2015 Mar 19. ;