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首页> 外文期刊>Environmental Science & Technology >A Rapid and Sensitive Chemical Screening Method for E-Cigarette Aerosols Based on Runtime Cavity Ringdown Spectroscopy
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A Rapid and Sensitive Chemical Screening Method for E-Cigarette Aerosols Based on Runtime Cavity Ringdown Spectroscopy

机译：基于运行时腔振荡光谱的电子卷烟气溶胶的快速和敏感的化学筛选方法

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摘要

Growing demand of Juul and other electronic cigarettes, despite critical knowledge gaps about their chemical composition, has led to concerns regarding their potential health effects. We introduce a novel analytical approach, runtime cavity ringdown spectroscopy (rtCRDS) for rapid detection of oxidative products in e-cigarette aerosols, to facilitate the study of aerosol from a single puff of e-liquid. We report a systematic investigation of three flavors of commercial Juul pods (Virginia tobacco, mango, and menthol) and known commercial e-liquid ingredients (propylene glycol (PG), vegetable glycerin (VG), nicotine, ethyl maltol, benzoic acid, and nicotine benzoate) vaped using Juul devices. Juul e-liquids and neat chemical additives spiked into a 30∶70 PG/VG solution were vaped and their aerosols were collected in 1-L Tedlar gas bags and analyzed using rtCRDS. Acetaldehyde, formaldehyde, and acetone were identified as primary oxidative products in aerosolized PG/VG. Ethanol was detected as a major constituent of the three commercial Juul flavors. Spectral intensities of carbonyl compounds increased with the addition of spikes, benzoic acid, ethyl maltol, and nicotine to PG/VG, suggesting that oxidative product generation increases with common additives. The method of direct, rapid analysis of e-cig aerosols introduced here can be used to complement traditional methods in vaping exposures.
机译：尽管有关其化学成分的关键知识差距，但尤努尔和其他电子卷烟的需求不断增长，导致其潜在的健康效果导致了担忧。我们介绍了一种新的分析方法，运行时腔卷曲光谱（RTCRDS），用于快速检测电子卷烟气溶胶中的氧化产品，以促进来自液液的单一泡沫的气溶胶。我们报告了对三种商业曲线豆荚（弗吉尼亚烟草，芒果和薄荷醇）和已知的商业E-液体成分（丙二醇（PG），植物甘油（Vg），尼古丁，丙二醇，苯甲酸，苯甲酸和尼古丁苯甲酸酯）使用juul设备吐口。将Juul E-液体和整洁的化学添加剂掺入30:70pg / Vg溶液中，并且将气溶胶收集在1升瘙痒液中并使用RTCRD分析。丙醛，甲醛和丙酮被鉴定为雾化PG / Vg中的原发性氧化产物。被检测为三种商业juul口味的主要组成部分。羰基化合物的光谱强度随着添加尖峰，苯甲酸，丙醇醇和尼古丁和PG / VG的增加而增加，表明氧化产物产生与常见添加剂增加。这里介绍的E-CIG气溶胶的直接迅速分析的方法可用于补充传统的俯冲曝光方法。

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