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Method for determining aqueous tobacco extract by adopting online infrared-assisted hydration reaction head space-gas chromatography/mass spectrometry

A gas chromatography-mass spectrometry and hydration reaction technology is used in the analysis of tobacco water extracts, and the infrared-assisted hydration reaction online determination of the headspace of tobacco water extracts in the field of gas chromatography-mass spectrometry, so as to enhance the strength, improve the extraction efficiency, and shorten the extraction time. effect of time

Active Publication Date: 2016-11-09
CHINA TOBACCO ZHEJIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the current headspace sampling device, because there is often some water in the sample, with heating and pressurization, the water in the sample also enters the gas chromatograph

Method used

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  • Method for determining aqueous tobacco extract by adopting online infrared-assisted hydration reaction head space-gas chromatography/mass spectrometry
  • Method for determining aqueous tobacco extract by adopting online infrared-assisted hydration reaction head space-gas chromatography/mass spectrometry
  • Method for determining aqueous tobacco extract by adopting online infrared-assisted hydration reaction head space-gas chromatography/mass spectrometry

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Instruments and reagents

[0038] Instruments: AL 204 electronic analytical balance (Mettler-Toledo Instruments Shanghai Co., Ltd.); headspace automatic sampling device (Agilent Technologies 7697A, USA); gas chromatography-mass spectrometry (Agilent Technologies 7890A-5975C, USA); Headspace bottle (20ml, Agilent Technologies); sealing cap (polytetrafluoroethylene, Agilent Technologies, USA); infrared lamp (Haining Qiqi Lighting Electric Co., Ltd., Zhejiang, China); tobacco powder aqueous extract sample (Liqun Flake Factory provided); anhydrous magnesium sulfate (analytical grade, Shanghai Shisi Hewei Chemical Co., Ltd.).

[0039] 2. Infrared-assisted hydration reaction online determination of tobacco water extract by headspace-gas chromatography-mass spectrometry

[0040] Specific steps are as follows:

[0041] Ⅰ: Sample preparation: Accurately weigh 3g of anhydrous magnesium sulfate sample, place it at the bottom of a 20ml headspace sample bottle, accurately pipet...

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Abstract

The invention discloses a method for determining aqueous tobacco extract by adopting an online infrared-assisted hydration reaction head space-gas chromatography / mass spectrometry. The method comprises the following steps: (1) placing a test tube with aqueous tobacco extract into a head-space sample bottle, sealing a bottle opening, and placing a drying agent at the inner bottom of the head-space sample bottle; and (2) heating the head-space sample bottle by using an infrared lamp until vapor in the aqueous tobacco extract is completely absorbed by the drying agent, then carrying out the head space-gas chromatographic / mass spectrometric determination, calculating according to a peak area normalization method, and determining a relative percentage composition of each component. The detection method is simple, accurate and sensitive in operation, has a popularization and application value, can be effectively used for analyzing aromatic sample containing moisture such as essence and perfume, and is particularly suitable for head-space feeding solid samples containing moisture and liquid samples or solid samples containing a component capable of reacting with the drying agent.

Description

technical field [0001] The invention belongs to the field of chemical analysis, and relates to an analysis method of tobacco water extract, in particular to a headspace-gas chromatography mass spectrometry method for online determination of tobacco water extract by infrared-assisted hydration reaction. Background technique [0002] The aroma of tobacco is the result of the joint action of a variety of aroma components with specific aroma characteristics. Different types of tobacco varieties or varieties of the same type have different composition, content and proportion of aroma components under different ecological environments and cultivation conditions. , thus representing different aroma types. Through qualitative and quantitative analysis, we can understand their impact on the style of cigarette products, and provide technical basis and reference information for cigarette formulation designers and flavoring technicians. [0003] The traditional extraction methods of to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
CPCG01N30/06G01N30/88
Inventor 杨艳芹周国俊储国海袁凯龙夏倩蒋健史春云
Owner CHINA TOBACCO ZHEJIANG IND
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