2021
DOI: 10.1021/acs.chemrestox.1c00253
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Characterizing the Chemical Landscape in Commercial E-Cigarette Liquids and Aerosols by Liquid Chromatography–High-Resolution Mass Spectrometry

Abstract: The surge in electronic cigarette (e-cig) use in recent years has raised questions on chemical exposures that may result from vaping. Previous studies have focused on measuring known toxicants, particularly those present in traditional cigarettes, while fewer have investigated unknown compounds and transformation products formed during the vaping process in these diverse and constantly evolving products. The primary aim of this work was to apply liquid chromatography−high-resolution mass spectrometry (LC−HRMS)… Show more

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Cited by 48 publications
(52 citation statements)
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“…Recently, Tehrani et al ( 2021) performed nontarget and quantitative analyses of e-liquids containing nicotine and generated e-aerosols from four of e-cigarettes: one disposable, two pod and one tank/mod to identify earlier unknown compounds. The liquid chromatography-high-resolution mass spectrometry (LC-HRMS) and chemical fingerprinting techniques used in the study permitted to observe that the number of detected compounds increased significantly in e-aerosol compared to e-liquid in three tested types of e-cigarettes [35].…”
Section: Chemical Components and Toxins Of E-cigarette Aerosolmentioning
confidence: 99%
“…Recently, Tehrani et al ( 2021) performed nontarget and quantitative analyses of e-liquids containing nicotine and generated e-aerosols from four of e-cigarettes: one disposable, two pod and one tank/mod to identify earlier unknown compounds. The liquid chromatography-high-resolution mass spectrometry (LC-HRMS) and chemical fingerprinting techniques used in the study permitted to observe that the number of detected compounds increased significantly in e-aerosol compared to e-liquid in three tested types of e-cigarettes [35].…”
Section: Chemical Components and Toxins Of E-cigarette Aerosolmentioning
confidence: 99%
“…Johns Hopkins University researchers applied liquid chromatography-high-resolution mass spectrometry (LC-HRMS) and chemical fingerprinting techniques to characterise e-liquids and aerosols from a selection of popular EC products (Mi-Salt™, Vuse™, Juul™ and Blu™) (Tehrani, Newmeyer et al 2021). They found nearly 2,000 chemicals in these products, the vast majority of which were unidentified.…”
Section: Dual Users Vs Exclusive Cigarette Smokersmentioning
confidence: 99%
“…Chemical analyses of e-cig vapor have revealed the presence of some of the same toxicants and carcinogens as those found in cigarette smoke, including carbonyl compounds, volatile organic compounds, free radicals, and heavy metals, albeit mostly at substantially lower concentrations [ 23 , 24 ]. E-cig vapor also contains chemicals that are not found in cigarette smoke [ 25 , 26 ]. The latter likely arise from the mixing and heating of humectants [e.g., propylene glycol and glycerol (vegetable glycerin); PG/VG] and flavorings present in e-liquid [ 27 ].…”
Section: Health Consequences: Smoking Vs Vapingmentioning
confidence: 99%