JUUL 'new technology' pods exhibit greater electrical power and nicotine output than previous devices
JUUL 'new technology' pods exhibit greater electrical power and nicotine output than previous devices
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DOI：
10.1136/tobaccocontrol-2020-056427
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发表时间：
2021-05-06
期刊：
影响因子：
5.2
通讯作者：
Shihadeh, Alan
中科院分区：
文献类型：
--
作者：
Karam, Ebrahim;Talih, Soha;Shihadeh, Alan
2019年，JUUL Labs开始在欧盟销售“新技术”吊舱，其中包含一种新的灯芯，声称可以提供“更多的满足感”。在这项研究中，我们比较了新技术JUUL豆荚的设计和结构材料、电气特性、液体成分以及尼古丁和羰基排放量。与制造商的声明一致，我们发现新的胶囊包含不同的芯吸材料。然而，我们还发现，尽管液体成分、器械几何形状和加热线圈电阻保持不变，但新的pod设计导致每次抽吸的尼古丁排放量比其前代产品高50%。我们发现，当连接到新技术吊舱时，JUUL电源单元向加热线圈提供了更一致的电压。这种行为表明，新的线圈芯系统导致液体和温度调节加热线圈之间更好的表面接触。总羰基排放量没有不同的豆荚代。尼古丁产量可以通过简单的芯材料替代而大大改变，这突显了以产品设计而不是产品性能规格为中心的监管方法的脆弱性。
In 2019, JUUL Labs began marketing in the European Union 'new technology' pods that incorporated a new wick that it claimed provided 'more satisfaction'. In this study, we compared design and materials of construction, electrical characteristics, liquid composition and nicotine and carbonyl emissions of new technology JUUL pods to their predecessors. Consistent with manufacturer's claims, we found that the new pods incorporated a different wicking material. However, we also found that the new pod design resulted in 50% greater nicotine emissions per puff than its predecessor, despite exhibiting unchanged liquid composition, device geometry and heating coil resistance. We found that when connected to the new technology pods, the JUUL power unit delivered a more consistent voltage to the heating coil. This behaviour suggests that the new coil-wick system resulted in better surface contact between the liquid and the temperature-regulated heating coil. Total carbonyl emissions did not differ across pod generations. That nicotine yields can be greatly altered with a simple substitution of wick material underscores the fragility of regulatory approaches that centre on product design rather than product performance specifications.