Flavoring Compounds Dominate Toxic Aldehyde Production during E Cigarette Vaping.
The growing popularity of electronic cigarettes (e cigarettes) raises concerns about the possibility of adverse health effects to primary users and people exposed to e cigarette vapors. E Cigarettes offer a very wide variety of flavors, which is one of the main factors that attract new, especially young, users. How flavoring compounds in e cigarette liquids affect the chemical composition and toxicity of e cigarette vapors is practically unknown. Although e cigarettes are marketed as safer alternatives to traditional cigarettes, several studies have demonstrated formation of toxic aldehydes in e cigarette vapors during vaping. So far, aldehyde formation has been attributed to thermal decomposition of the main components of e cigarette e liquids (propylene glycol and glycerol) while the role of flavoring compounds has been ignored. In this study, we have measured several toxic aldehydes produced by three popular brands of e cigarettes with flavored and unflavored e liquids. We show that, within the tested.