An emerging category of electronic cigarettes (ECIGs) is sub-Ohm devices (SODs) that operate at ten or more times the power of conventional ECIGs. Because carcinogenic volatile aldehyde (VA) emissions increase sharply with power, SODs may expose users to greater VAs. In this study, we compared VA emissions from several SODs and found that across device, VAs and power were uncorrelated unless power was normalized by coil surface area. VA emissions and liquid consumed were correlated highly. Analyzed in light of EU regulations limiting ECIG liquid nicotine concentration, these findings suggest potential regulatory levers and pitfalls for protecting public health.

中文翻译：

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“果汁怪兽”：亚欧姆蒸汽和有毒的挥发性醛排放

电子烟（ECIG）的新兴类别是亚欧姆设备（SOD），其运行能力是传统ECIG的十倍甚至更多倍。由于致癌性挥发性醛（VA）排放随功率急剧增加，因此SOD可能会使用户接触更大的VA。在这项研究中，我们比较了几种SOD的VA排放，发现在整个设备中，除非通过线圈表面积对功率进行归一化，否则VA和功率是不相关的。VA排放与消耗的液体高度相关。根据欧盟限制ECIG液体尼古丁浓度的法规进行分析，这些发现表明了保护公众健康的潜在监管手段和陷阱。