Dynamic headspace-cold focusing-GC (Gas Chromatography)-MS (Mass Spectrometer) tobacco headspace element analysis method

A -GC-MS, dynamic headspace technology, applied in the field of online analysis, can solve problems such as incomplete analysis, achieve comprehensive qualitative and quantitative analysis, improve enrichment efficiency, and increase reliability.

Active Publication Date: 2011-09-07
ZHENGZHOU TOBACCO RES INST OF CNTC
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for analyzing tobacco headspace components based on dynamic headspace-cold focusing interface and GC-MS in view of the shortcomings that the above-mentioned existing tobacco headspace component analysis methods cannot be comprehensively analyzed

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  • Dynamic headspace-cold focusing-GC (Gas Chromatography)-MS (Mass Spectrometer) tobacco headspace element analysis method
  • Dynamic headspace-cold focusing-GC (Gas Chromatography)-MS (Mass Spectrometer) tobacco headspace element analysis method
  • Dynamic headspace-cold focusing-GC (Gas Chromatography)-MS (Mass Spectrometer) tobacco headspace element analysis method

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with embodiment (accompanying drawing):

[0015] The tobacco headspace composition analysis method of dynamic headspace-cold focusing-GC-MS of the present invention comprises the following steps: take by weighing 0.1 ~ 2 grams of cigarette shredded tobacco samples, put them into a headspace sample bottle with a volume of 20 milliliters, The sample bottle is heated, the heating time is 8-12 minutes, and the heating temperature is 55-65 degrees. After the heating is completed, the carrier gas of the gas chromatography-mass spectrometry instrument GC-MS is used for continuous purging; the purged The headspace components are sent to the PTV inlet through the transmission pipeline, cooled to -100°C by liquid nitrogen to condense and enrich, and after enrichment, the temperature rises rapidly and enters the gas chromatography. After being separated by the gas chromatography GC, it enters the mass spectrometer...

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Abstract

The invention discloses a dynamic headspace-cold focusing-GC (Gas Chromatography)-MS (Mass Spectrometer) tobacco headspace element analysis method comprising the following steps of: arranging a tobacco sample in a dynamic headspace instrument, heating the tobacco sample, blowing and sweeping the tobacco sample continuously, enabling the blown and swept tobacco headspace elements to enter into a gas chromatograph PTV (Programmed Temperature Vent) through a transmission pipeline to be condensed and enriched, separating the enriched tobacco elements through a gas chromatograph GC, and then enabling the separated tobacco elements to enter into the MS for carrying out qualitative and quantitative analysis.

Description

technical field [0001] The invention relates to an online analysis method which connects a dynamic headspace-cold focusing interface with a gas chromatography-mass spectrometry instrument GC-MS. Background technique [0002] Tobacco headspace aroma components are one of the important characterization components of tobacco quality. At present, the methods for determining tobacco headspace components mainly include static headspace and dynamic headspace gas chromatography mass spectrometry. It is a relatively special analytical technique that extracts the aroma components in tobacco from the headspace of the tobacco sample, and combines it with a gas chromatography spectrometer to analyze the sample. This technique eliminates carry-over interference from matrix components. However, the method has poor sensitivity, poor stability and reproducibility. At the same time, since the static headspace is an equilibrium extraction process, the extraction effect on small molecule arom...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/08G01N30/72G01N30/16
Inventor 颜权平王洪波赵乐谢复炜刘惠民
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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