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Method for detecting content of methanol in tobacco flavor

A technology for tobacco flavor and methanol content, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of difficult detection, difficult separation of complex components in methanol and tobacco flavor, and achieve high sensitivity, reduce errors, and operate easy effect

Active Publication Date: 2016-09-28
HUBEI CHINA TOBACCO IND
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  • Abstract
  • Description
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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, in order to solve the problem of difficult separation and detection of complex components in methanol and tobacco essence, the present invention provides a method for measuring methanol content in tobacco essence that is easy to operate, fast and accurate in detection

Method used

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  • Method for detecting content of methanol in tobacco flavor
  • Method for detecting content of methanol in tobacco flavor
  • Method for detecting content of methanol in tobacco flavor

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Embodiment 1

[0022] (1) Preparation of internal standard solution: Weigh 1.0 g of n-butanol in a 250 mL volumetric flask, and constant volume with absolute ethanol to obtain an ethanol internal standard solution with a concentration of 4 mg / mL of n-butanol;

[0023] (2) Preparation of standard solution: Weigh 0.25g of methanol into a 500mL volumetric flask, dilute to volume with absolute ethanol, and accurately pipette 0.1mL, 0.2mL, 0.4mL, 1.0mL, 2.0mL, 4.0mL of methanol solution in In six 10mL volumetric flasks, add 2mL of the internal standard solution prepared in step (1) respectively, and then dilute with absolute ethanol to obtain grade 6 standard solutions, with methanol concentrations of 5mg / L, 10mg / L, and 20mg respectively. / L, 50mg / L, 100mg / L, 200mg / L;

[0024] (3) Preparation of sample solution: accurately pipette 5mL of tobacco flavor sample into a 10mL volumetric flask, add 2mL of internal standard working solution, after constant volume with absolute ethanol, filter with a 0.4...

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Abstract

The invention provides a method for detecting content of methanol in tobacco flavor. The method comprises the following steps: preparation of an internal standard solution, preparation of a standard solution, preparation of a sample solution, and detection of methanol content by gas chromatography. The gas chromatography is used for direct detection of the content of methanol in tobacco flavor, so that methanol and other interference components can be effectively separated; and the method has the advantages of simple operation, rapid, accuracy, high sensitivity, and good repeatability.

Description

technical field [0001] The invention relates to the technical field of physical and chemical testing of tobacco essence, in particular to a method for measuring methanol content in tobacco essence. Background technique [0002] Methanol is a saturated monohydric alcohol with the simplest structure, and it is a colorless, volatile liquid with an alcoholic smell. Methanol is highly toxic, and the lowest dose of oral poisoning is about 100mg / kg body weight. Inhalation of a few milliliters to 10 milliliters can cause severe poisoning, even blindness, and oral ingestion of 0.3-1g / kg can cause death. The maximum limit for human consumption in wine is 0.1g / kg. [0003] At present, domestic and foreign methods to detect methanol content in alcohol mainly include colorimetry, gas chromatography, high performance liquid chromatography, laser Raman spectroscopy, Fourier transform infrared spectroscopy, refraction and so on. [0004] Tobacco alcohol is generally 95% industrial alcohol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/88
CPCG01N30/02G01N30/06G01N30/88G01N2030/025G01N2030/062G01N2030/884
Inventor 朱颖王冬李丹黄龙
Owner HUBEI CHINA TOBACCO IND
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