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Method for quantitative analysis of main pyrazine flavor substances in cigarette mainstream smoke

A technology for cigarette mainstream smoke and aroma substances, which is applied in the direction of analyzing materials, measuring devices, and material separation. The method has novel ideas and the effect of reducing errors

Active Publication Date: 2016-08-10
CHINA TOBACCO JIANGSU INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of cigarette smoke matrix and the small content of pyrazines, conventional instruments are difficult to simultaneously quantitatively analyze pyrazines in smoke

Method used

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  • Method for quantitative analysis of main pyrazine flavor substances in cigarette mainstream smoke
  • Method for quantitative analysis of main pyrazine flavor substances in cigarette mainstream smoke
  • Method for quantitative analysis of main pyrazine flavor substances in cigarette mainstream smoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this embodiment, the detection method of trace main pyrazine flavoring substances in cigarette mainstream smoke is as follows (the flow chart of the detection method is as follows: figure 1 shown):

[0039] (1) Preparation of internal standard solution

[0040] ①Internal standard stock solution: Accurately weigh 0.202g of n-heptadecane to the nearest 0.1mg, dissolve it in a 100mL volumetric flask with ethanol and bring the volume up to the mark. ②Internal standard solution: Accurately pipette 0.1mL internal standard stock solution into a 100mL volumetric flask, dilute with ethanol and bring the volume up to the mark. The concentration of n-heptadecane was 2.02 μg / mL.

[0041] (2) Preparation of standard working solution

[0042] ① Primary standard stock solution: Accurately weigh 0.2011g 2-methylpyrazine, 0.1560g 2,5-dimethylpyrazine, 0.1032g 2,6-dimethylpyrazine, 0.0523g 2-methoxy pyrazine, 0.1005g 2,3,5-trimethylpyrazine, 0.1079g 2-ethyl-3-methylpyrazine, 0.055...

Embodiment 2

[0067] The present embodiment is as follows to the detection method of the precision of the present invention and the standard addition recovery rate:

[0068] Taking the cigarette samples used in Example 1 as the analysis object, the intraday precision experiment was carried out respectively. The intraday precision experiment was that the same sample was measured in parallel 6 times under the same conditions (same batch processing), and the results of 6 parallel measurements were calculated respectively. The relative standard deviation (RSD) of the measurement results are shown in the table below. The results in the table show that the intraday repeatability RSD of this experimental method is less than 10%, which indicates that the method has good precision for the quantitative analysis of trace substances.

[0069] Substance name

RSD(%)

2-Methylpyrazine

5.20

2,5-Dimethylpyrazine

5.17

2,6-Dimethylpyrazine

8.78

2-methoxypyrazin...

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Abstract

The invention discloses a method for quantitative analysis of main pyrazine flavor substances in cigarette mainstream smoke and relates to a method for gas chromatography-tandem mass spectrometer-based determination of eight main pyrazine flavor substances such as 2-methylpyrazine, 2, 5-dimethylpyrazine, 2, 6-dimethylpyrazine, 2-methoxypyrazine, 2, 3, 5-trimethylpyrazine, 2-ethyl-3-methylpyrazine, 2, 3, 5, 6-tetramethylpyrazine and 2-acetylpyrazine in cigarette mainstream smoke. The method comprises internal standard solution, standard work solution and sample solution preparation, gas chromatography-tandem mass spectrometry analysis and determination result calculation. The improved detection method can be operated simply, has response sensitivity and quantitative analysis accuracy, effectively reduces complex sample matrix-caused interference and is suitable for quantitative analysis of a trace quantity of a target object in a complex flue gas matrix.

Description

technical field [0001] The invention discloses a method for quantifying and analyzing main pyrazine-like aroma substances in cigarette mainstream smoke, in particular to a method for determining trace main pyrazine-like aroma substances in cigarette smoke based on gas chromatography-tandem mass spectrometry The method belongs to the technical field of cigarette physical and chemical index detection. Background technique [0002] In recent years, affected by multiple factors such as smoking and health, popular taste of cigarettes, etc., the consumption characteristics of cigarettes are gradually changing to the direction of high aroma, low tar and low harm. In order to meet this requirement, the technology of adding spices and flavoring is studied, and various flavoring substances are selected to adapt and meet the needs of different leaf group structures. Among them, pyrazine compounds play an increasingly significant role in tobacco flavoring technology. Pyrazine compound...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
CPCG01N30/88G01N2030/884
Inventor 廖惠云庄亚东李朝建熊晓敏石怀彬王珂清曹毅张媛韩开冬张华
Owner CHINA TOBACCO JIANGSU INDAL
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