Online detection method for pyrolysis gas-phase components of tobacco additive or tobacco material

A technology of gas phase components and additives, which is applied in the field of determination of gas phase components, can solve the problems of long measurement time, low efficiency, poor accuracy, etc., and achieve the effect of saving time and high efficiency

Active Publication Date: 2014-04-02
SHANGHAI TOBACCO GRP CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of method of on-line measurement tobacco additive or smoking material cracking gas phase composition, solve the problem of using off-line cracking-thermal desorption-gas phase / mass spectrometry (Py-ATD-GC / MSD) determination method exists in the long determination time, low efficiency, poor accuracy and other problems, it is used to supplement and improve the current safety evaluation method of tobacco additives or smoking materials in the world, and at the same time overcome the inability of the existing technology to measure the pyrolysis products. The defects of many low-molecular-weight gas-phase harmful components can effectively improve the quality and safety of cigarette products

Method used

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  • Online detection method for pyrolysis gas-phase components of tobacco additive or tobacco material
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  • Online detection method for pyrolysis gas-phase components of tobacco additive or tobacco material

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Experimental program
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Effect test

Embodiment 1

[0058] 1 method

[0059] 1.1 Cracking: first fill the middle part of the pyrolysis quartz tube with quartz wool, then weigh 1±0.05mg of tobacco leaf powder, put it on the quartz wool, then plug the upper end of the sample with quartz wool, and then put it into the CDS 2000 pyrolysis instrument. Under the oxygen-containing gas atmosphere, the platinum wire is heated to carry out the staged temperature programmed cracking; the cracking conditions of the CDS 2000 cracking instrument are: cracking gas: 10% O 2 and 90%N 2 Mixed gas; gas flow rate: 276ml / min; cracking chamber temperature: 250°C; heating rate: the initial temperature is 300°C, hold for 5s, then raise the temperature to 900°C at 30°C / s, and hold for 5s.

[0060] 1.2 Filtration: The components produced by the cracking are filtered online through the Cambridge filter device connected to the cracking instrument, and the diameter of the Cambridge filter is 1cm;

[0061] 1.3 Trapping and sampling: the filtered gas phase ...

Embodiment 2

[0074] 1 method

[0075] 1.1 Cracking: Put a quartz rod in the pyrolysis quartz tube first, and fill the upper end of the quartz rod with about 1mg of quartz wool, compact it, weigh 1±0.05mg of sucrose on the quartz wool, and then fill the upper end of the sample with About 1 mg of quartz wool is then put into a CDS 5250T pyrolysis instrument, and under an oxygen-containing gas atmosphere, the platinum wire is heated to carry out stage-by-stage temperature programmed pyrolysis; the cracking conditions of the CDS 5250T pyrolysis instrument are: pyrolysis gas: 10% O 2 and 90%N 2 Mixed gas; gas flow rate: 70ml / min; cracking chamber temperature: 300°C; heating rate: the initial temperature is 300°C, keep for 5s, then raise the temperature to 900°C at 30°C / s, and keep for 5s.

[0076] 1.2 Filtration: The components produced by the cracking are filtered online through the Cambridge filter device connected to the cracking instrument, and the diameter of the Cambridge filter is 1cm; ...

Embodiment 3

[0088] 1 method

[0089] 1.1 Pyrolysis: first fill the middle part of the pyrolysis quartz tube with quartz wool, then weigh 1±0.05mg of cigarette paper, put it on the quartz wool, then plug the upper end of the cigarette paper with quartz wool, and then put it into the CDS 2000 pyrolysis instrument , in an oxygen-containing gas atmosphere, the platinum wire is heated for stage-by-stage temperature-programmed pyrolysis. The cracking conditions of the CDS 2000 cracking instrument are: cracking gas: 10%O 2 and 90%N 2 Mixed gas; gas flow rate: 276ml / min; cracking chamber temperature: 250°C; heating rate: the initial temperature is 300°C, hold for 5s, then raise the temperature to 900°C at 30°C / s, and hold for 5s.

[0090] 1.2 Filtration: The components produced by the cracking are filtered online through the Cambridge filter device connected to the cracking instrument, and the diameter of the Cambridge filter is 1cm;

[0091] 1.3 Trapping and sampling: The filtered gas phase c...

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Abstract

The invention provides an online detection method for pyrolysis gas-phase components of a tobacco additive or a tobacco material. The method comprises the following steps: filtering the pyrolysis product of the tobacco additive or the tobacco material through a Cambridge filter device, trapping and injecting the sample, adopting a gas chromatography-mass spectrometry method to measure the content of the gas-phase components generated after the tobacco additive or tobacco material is pyrolyzed. Compared to the conventional method, the online detection method adopts a stepped-heating pyrolysis condition, different trapping and injection conditions and gas chromatography-mass spectrometry detection conditions, saves time, and can effectively and comprehensively detect low-molecular-weight gas-phase components in the pyrolysis product of the tobacco additive and the tobacco material. The method is of great significance for improving tobacco safety and reducing harm of the tobacco to human health.

Description

technical field [0001] The invention belongs to the technical field of an online method for measuring gas phase components released by cracking organic substances, and in particular relates to a method for measuring gas phase components released by online cracking of tobacco additives or smoking materials. Background technique [0002] Improving the safety of cigarettes and reducing the harm of cigarettes to human health are the main development directions of the world tobacco industry in the future. Among them, the tobacco additives or tobacco materials required for the preparation of tobacco, as an important part of cigarettes, their own safety and the safety of their cracking products in the process of smoking cigarettes, will play a role in improving the safety of cigarettes. to a vital role. [0003] Richard R. Baker et al. conducted cracking research on additives used in tobacco (The pyrolysis of tobacco ingredients, J. Anal. Appl. Pyrolysis 71(2004) 223-311), but thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 罗昌荣印黔黔王晔孙谢坤陈敏谢焰
Owner SHANGHAI TOBACCO GRP CO LTD
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