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Researchers at Johns Hopkins University have discovered that e-cigarette aerosols contain thousands of unknown chemicals and substances that are not disclosed by manufacturers, including industrial chemicals and caffeine
This research is the first to apply an advanced fingerprint technology for identifying chemicals in food and wastewater to vapor liquids and aerosols
"Existing studies have compared e-cigarettes with ordinary cigarettes and found that the cigarette pollutants in e-cigarettes are much lower
Previous research on electronic cigarettes specifically looked for evidence of harmful chemicals in traditional cigarettes
The team used a chemical fingerprinting technique based on liquid chromatography/high-resolution mass spectrometry to test four popular products: Mi-Salt, Vuse, Juul and Blu
They found thousands of unknown chemical substances in the e-cigarette liquid, and the number of compounds in the aerosol increased significantly
The lead author of the study, Mina Tehrani, a postdoctoral fellow at the Bloomberg School of Public Health at Johns Hopkins University, said: “One of the main ways e-cigarettes are marketed is that their working temperature is lower than the combustion temperature.
The research team discovered nearly 2,000 chemical substances, most of which have not yet been confirmed
She said: "This may give smokers an undisclosed extra pleasure
In addition to caffeine, the research team also discovered three industrial chemicals, an insecticide, and two flavorings, which may have toxic effects and irritate the respiratory tract
Plath said that since his cousin started smoking e-cigarettes and insisted that it is healthy, he has become interested in researching e-cigarette products
"People just need to know that when they smoke e-cigarettes, they inhale a very complex chemical mixture
Ana M.
She said: "Millions of middle school and high school students use e-cigarettes, otherwise they would not think of smoking
The authors also include Matthew N.
This work was supported by the National Institute of Environmental Health Sciences R01ES030025 and T32ES007141, the National Translational Science Advancement Center, and the National Institutes of Health Medical Research Roadmap Fund UL1 TR003098
Magazine
Toxicology and Chemistry Research
DOI
10.
1021/acs.
chemrestox.
1c00253
Article title
Characterization of chemical landscapes in e-cigarette liquids and aerosols using liquid chromatography-high resolution mass spectrometry
