US study: Nearly 2,000 unknown chemicals found in e-cigarette solutions

E-cigarettes come in a variety of flavors and cigarette substitutes. In recent years, they have been favored by young people, and the use rate of e-cigarettes among teenagers has also continued to rise. According to the results of the smoking behavior survey conducted by the National Health Service of the Ministry of Health and Welfare, it was found that Chinese people over the age of 18 The use rate of e-cigarettes has increased from 0.6% in 2018 to 1.7% in 2020, an increase of nearly three times, focusing on young men and women. However, this also brings hidden concerns. The latest research shows that nearly 2,000 unknown chemical substances have been found in the solution and aerosol of e-cigarette cartridges.

E-cigarettes, also known as electronic atomizers, are composed of electronic cigarettes and pods. The atomizer is mainly driven by electric energy, and the electronic solution (liquid) of the pod is heated to form smoke. Because it does not produce tar and carbon monoxide, some medical circles People think it is a potential nicotine substitute.

Pods may be one of the reasons why e-cigarettes are controversial. The components of pods are complex, mostly composed of propylene glycol, glycerin, nicotine, water, flavors and preservatives, and a variety of flavors are introduced to attract the public to buy. 전자담배 액상 사이트 The components of pods from different manufacturers are also different. Not the same, but please note that if nicotine is mixed with it, it will violate the “Pharmaceutical Affairs Law”, and the hidden drugs such as amphetamine and marijuana will naturally be dealt with in accordance with the “Drug Hazard Prevention Regulations”.

Recently, the Johns Hopkins University (Hopkins) in the United States conducted in-depth research on the components of pod solutions and aerosols. For the first time, all potential compounds were analyzed non-specifically by liquid chromatography and high-resolution mass spectrometry.

The test objects are tobacco-flavored pods of four well-known brands, Mi-Salt, Vuse, Juul, and Blu, as well as aerosols produced by four common e-cigarettes such as can-shaped, pod-changing, and disposable. The study pointed out that a large number of unknown, Some known and harmful compounds.

Nearly 2,000 compounds were detected in the study, most of which were “unidentified”. Among the identified chemical substances, six potentially harmful compounds were also detected, including two flavoring agents that may be related to respiratory irritation, three industrial chemicals, one Insecticides, and, unusually, caffeine.

If it is coffee or chocolate flavor pods, it is normal to contain caffeine, but the team tested the tobacco flavor, so the presence of caffeine is a bit intriguing. Mina Tehrani, first author of the paper and a postdoctoral fellow in the School of Public Health, pointed out, “This may bring additional, unexpected stimulation to users, and we want to know whether the manufacturer added it intentionally.”

Another unexpected finding of the study was that the aerosol detected condensed hydrocarbon-like compounds, which are usually only produced during the combustion process, but e-cigarettes are not burned, and are directly atomized solutions.

Carsten Prasse, corresponding author and assistant professor in the Department of Environmental Health and Engineering, said that while existing research indicates that e-cigarettes do have fewer pollutants than cigarettes, the problem is that e-cigarette aerosols contain other completely uncharacterized chemicals, and there may be many that are not yet known. Health risks, as more and more young people use e-cigarettes, there is a need to know what they are being exposed to.

Hopkins is not the first team to study e-cigarette solutions. Previously, Australia used gas chromatography and mass spectrometry to analyze the chemical composition of 65 e-cigarette liquids and found that each sample contained at least one potentially harmful chemical substance, including Formaldehyde, cinnamon aldehyde, and traces of nicotine are also found in pods that claim to be nicotine-free.

The team believes that this study confirms how little is known about the chemicals in e-cigarettes. Although the study did not compare the harm of e-cigarettes and smoking, e-cigarettes should not be regarded as a “healthy” alternative to cigarettes. In addition, according to the Pharmaceutical Affairs Law, e-cigarette products must not claim to have medical efficacy such as “helping quit smoking”, “reduce smoking cravings” or “relieve withdrawal symptoms”.

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