Method for measuring main phenolic compounds in electronic cigarette liquid

A technology of e-cigarette liquid and phenolic compounds, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of no research reports, etc., and achieve the effects of simplified elution procedures, high sensitivity, and easy operation

Inactive Publication Date: 2014-05-21
CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is of great significance to accurately determine the content of ph...

Method used

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  • Method for measuring main phenolic compounds in electronic cigarette liquid
  • Method for measuring main phenolic compounds in electronic cigarette liquid
  • Method for measuring main phenolic compounds in electronic cigarette liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Instruments, reagents and instrument working conditions

[0035] 1) Instrument

[0036] DIONEX Ultimate 3000 high performance liquid chromatography with fluorescence detector (Thermo SCIENTIFIC); AE163 electronic balance (sensitivity: 0.0001 g, Mettler, Switzerland); Milli-Q Integral ultrapure water system (Millipore); ultrasonic generation Device (KQ-700DB CNC ultrasonic cleaner).

[0037] 2) Reagents

[0038] Phenol, hydroquinone, resorcinol, catechol, m-cresol, p-cresol and o-cresol are all standard products; acetic acid (ultra-pure grade, TEDIA, USA); ultra-pure water.

[0039] 3) Liquid chromatography conditions

[0040] Chromatographic column: Phenomenex Luna 5u C18(2) 100A, 150 mm × 4.60 mm, 5 μm; column temperature: 30°C; mobile phase: acetic acid-acetonitrile-water (1+30+69); flow rate: 1 mL / min; Injection volume: 10 μL; Isocratic elution: 10 min; Fluorescence detector conditions:

[0041] serial number time / min Excitation wavelength / nm ...

Embodiment 2

[0061] According to the high performance liquid chromatography method described in Example 1, an e-cigarette liquid B was selected, and the content of phenol in it was measured to be 0.74 μg / g, and other phenolic compounds were not detected.

Embodiment 3

[0063] According to the high-performance liquid chromatography method described in Example 1, an electronic cigarette liquid C was selected, and the contents of catechol and phenol in it were measured to be 0.81 μg / g and 1.34 μg / g respectively, and other phenolic compounds were not Check out.

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Abstract

The invention discloses a method for measuring main phenolic compounds in electronic cigarette liquid. The method comprises the steps of preparing a sample solution to be measured by an ultrasonic extracting method, preparing a mixed standard working solution with give concentration gradients, analyzing the solution by a high-efficient liquid-phase chromatography and a fluorescent detector, and quantizing by an external standard method. The result shows that the method is simple in preprocessing, simple to operate, short in analysis time, high in sensitivity, good in recovery rate and precision and suitable for measurement on the content of phenolic compounds in the electronic cigarette liquid.

Description

technical field [0001] The invention relates to the technical field of physical and chemical testing of electronic cigarette products, in particular to a method for determining main phenolic compounds in electronic cigarette liquid. Background technique [0002] In recent years, the topic of smoking and health has been widely concerned by people, and smoking is harmful to health has been generally recognized by people. In 2005, China signed the "Framework Convention on Tobacco Control", which provided a legal basis for tobacco control. In 2012, the Chinese government issued the "China Tobacco Control Plan (2012-2015)", proposing to create a smoke-free environment and implement a comprehensive ban on smoking in public places. 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 l...

Claims

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Application Information

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IPC IPC(8): G01N30/02
Inventor 韩书磊陈欢刘彤吴帅宾侯宏卫胡清源
Owner CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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