Method for determining content of 1,2-propanediol, propanetriol and triethylene glycol in suction aerosol of electronic cigarette

Abstract

The invention provides a method for determining the content of 1,2-propanediol, propanetriol and triethylene glycol in suction aerosol of an electronic cigarette. The method is characterized by comprising the following steps: firstly, sucking the electronic cigarette by using a smoking machine provided with a conversion connection device; capturing 1,2-propanediol, propanetriol and triethylene glycol in the aerosol by using a Cambridge filter; taking an isopropanol solution added with an interior label as an extracting solvent; extracting an object to be detected by using a vibration extraction method; and analyzing by using a gas chromatograph and a hydrogen flame ionization detector; and quantifying with an internal standard method. An experiment result shows that the analysis method has high efficiency and is simple and effective; the linear relation of 1,2-propanediol, propanetriol and triethylene glycol in respective linear ranges is good, the detection limit is 1.01-2.16 micrograms/millimeter, the average recycling rate of three label adding levels is 96.0%-103.6%, and the relative standard deviation is less than 3.60%; and the method has high sensitivity and good repeatability and recovery rate.

Description

technical field [0001] The invention relates to the technical field of physical and chemical inspection of electronic cigarette products, in particular to a method for measuring the content of 1,2-propanediol, glycerol and triethylene glycol in the aerosol inhaled by electronic cigarettes. Background technique [0002] Electronic cigarettes (e-cigarettes), also known as electronic nicotine delivery systems (ENDS), are a new form of nicotine intake that looks similar to cigarettes. Over the years, e-cigarettes have used "health care", "quit smoking" and "cleaning the lungs" as their promotional slogans, with the Internet as the main marketing channel, and their sales in China have increased significantly. However, there are still few studies on the determination of the main components of e-cigarette aerosols. [0003] 1,2-Propanediol and glycerol are the main chemical components in electronic cigarette pods and e-liquid. 1,2-Propanediol and glycerin are the solvents of most...

AI Technical Summary

Problems solved by technology

Studies have shown that the main components of e-cigarette liquids (pods) are 1,2-propanediol and glycerol, and may contain triethylene glycol, but there

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