Process for analyzing gas-phase total components in cigarette mainstream smoke through airbag-thermal desorption-gas chromatography/mass spectrometry method

A technology for mainstream smoke and thermal desorption of cigarettes, applied in the directions of analysis materials, material separation, measurement devices, etc., can solve the problems of unsatisfactory reproducibility and sensitivity of gas-phase analysis methods, and achieve improved sensitivity and repeatability. Work efficiency, reduce the effect of background signal

Active Publication Date: 2013-07-31
SHANGHAI TOBACCO GRP CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

According to research reports at home and abroad, the selective harm reduction technology for particle phase components is very difficult, and when the gas phase components pass through the filter, due to their fast diffusion speed, th...

Method used

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  • Process for analyzing gas-phase total components in cigarette mainstream smoke through airbag-thermal desorption-gas chromatography/mass spectrometry method
  • Process for analyzing gas-phase total components in cigarette mainstream smoke through airbag-thermal desorption-gas chromatography/mass spectrometry method
  • Process for analyzing gas-phase total components in cigarette mainstream smoke through airbag-thermal desorption-gas chromatography/mass spectrometry method

Examples

Experimental program
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Effect test

Embodiment 1

[0041] An airbag-thermal desorption-gas / mass spectrometry method for analyzing the gas-phase complete components in the mainstream smoke of cigarettes is used for qualitative analysis of a certain brand of cigarettes. The method steps are as follows: (the device is as follows figure 1 shown)

[0042] (1) Generate smoke

[0043] Preheat the Borgwaldt200A 20-hole rotary table smoking machine at 22°C±2°C for 20 minutes, adjust the wind speed and suction capacity of the smoking machine, and smoke cigarettes according to ISO standards. The wind speed of the smoking machine is 20cm / s; the suction volume is 35mL, the suction time is 2s / puff, and the interval between each puff is 58s, and the smoke of 20 cigarettes is collected with a Tedler air bag.

[0044] (2) transfer flue gas

[0045]After collecting the smoke of 20 cigarettes with the Tedler air bag, after 2 minutes, use the LSP02-1B syringe pump (the maximum stroke of the syringe pump is 140mm, stroke resolution: 0.156μm, lin...

Embodiment 2

[0058] A method of gas bag-thermal desorption-gas / mass spectrometry to analyze the gas phase components in mainstream cigarette smoke is used to analyze some gas phase components of 2R4F standard cigarettes 1,3-butadiene, isoprene, propylene Qualitative and quantitative analysis of nitrile, benzene, toluene, styrene, acetone, crotonaldehyde, etc., and compared with literature reports:

[0059] 1. Preparation of standard working curve

[0060] When the internal standard method is used to quantitatively determine some of the measured components in the gas phase of mainstream smoke, the internal standard substance is deuterated benzene, and the methanol solution with the measured components and internal standard substances is used as the concentration of the working mother solution (level 5 standard solution, see Table 2); the rest of the standard solutions were obtained by serially diluting with methanol. The relative ratio of the concentration of the substance to be measured i...

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Abstract

The invention relates to a process for analyzing gas-phase total components in a cigarette mainstream smoke through an airbag-thermal desorption-gas chromatography/mass spectrometry method. The process allows an airbag, an adsorption sampling tube, a syringe pump and a thermal desorber-gas chromatograph/mass spectrometer, utilizes the airbag to collect a cigarette mainstream smoke, allows the smoke in the airbag to be adsorbed to the adsorption sampling tube through the syringe pump, and utilizes the thermal desorber-gas chromatograph/mass spectrometer to desorb, age, detect and qualitatively and quantitatively analyze, so the advantages of each of above instruments are used, the repeatability is improved, the relative standard deviations of most measured substances in the gas-phase full components are below 5%, and the repeatability is substantially better than the previously-reported repeatability.

Description

technical field [0001] The invention relates to an air bag-thermal desorption-gas / mass spectrometry method for analyzing gas-phase complete components in cigarette mainstream smoke, and belongs to the technical field of cigarette smoke gas-phase component detection and analysis. Background technique [0002] Cigarette smoke is the most complex system known. At present, more than 5000 chemical components have been identified from cigarette smoke, which exist in two phases of gas and particles. According to research reports at home and abroad, the selective harm reduction technology for particle phase components is very difficult, and when the gas phase components pass through the filter, due to their fast diffusion speed, they may be selectively adsorbed by the filter’s harm reduction materials, so the selective The focus of harm reduction should be on gas phase components, but the reproducibility and sensitivity of most gas phase analysis methods are not ideal. In order to ...

Claims

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Application Information

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IPC IPC(8): G01N30/02
Inventor 郑赛晶陈敏刘百战王磊君张怡春
Owner SHANGHAI TOBACCO GRP CO LTD
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