Saffari Arian, Daher Nancy, Ruprecht Ario, De Marco Cinzia, Pozzi Paolo, Boffi Roberto, Hamad Samera H, Shafer Martin M, Schauer James J, Westerdahl Dane, Sioutas Constantinos
University of Southern California, Department of Civil and Environmental Engineering, Los Angeles, CA, USA.
Environ Sci Process Impacts. 2014;16(10):2259-67. doi: 10.1039/c4em00415a.
In recent years, electronic cigarettes have gained increasing popularity as alternatives to normal (tobacco-containing) cigarettes. In the present study, particles generated by e-cigarettes and normal cigarettes have been analyzed and the degree of exposure to different chemical agents and their emission rates were quantified. Despite the 10-fold decrease in the total exposure to particulate elements in e-cigarettes compared to normal cigarettes, specific metals (e.g. Ni and Ag) still displayed a higher emission rate from e-cigarettes. Further analysis indicated that the contribution of e-liquid to the emission of these metals is rather minimal, implying that they likely originate from other components of the e-cigarette device or other indoor sources. Organic species had lower emission rates during e-cigarette consumption compared to normal cigarettes. Of particular note was the non-detectable emission of polycyclic aromatic hydrocarbons (PAHs) from e-cigarettes, while substantial emission of these species was observed from normal cigarettes. Overall, with the exception of Ni, Zn, and Ag, the consumption of e-cigarettes resulted in a remarkable decrease in secondhand exposure to all metals and organic compounds. Implementing quality control protocols on the manufacture of e-cigarettes would further minimize the emission of metals from these devices and improve their safety and associated health effects.
近年来，电子烟作为普通（含烟草）香烟的替代品越来越受欢迎。在本研究中，对电子烟和普通香烟产生的颗粒进行了分析，并对不同化学物质的暴露程度及其排放率进行了量化。尽管与普通香烟相比，电子烟中颗粒元素的总暴露量降低了10倍，但特定金属（如镍和银）在电子烟中的排放率仍然较高。进一步分析表明，电子烟液对这些金属排放的贡献相当小，这意味着它们可能来自电子烟装置的其他部件或其他室内来源。与普通香烟相比，电子烟吸食过程中有机物质的排放率较低。特别值得注意的是，电子烟中未检测到多环芳烃（PAHs）的排放，而普通香烟中则观察到这些物质的大量排放。总体而言，除镍、锌和银外，吸食电子烟导致二手烟对所有金属和有机化合物的暴露显著减少。对电子烟生产实施质量控制协议将进一步减少这些装置中金属的排放，并改善其安全性及相关健康影响。
