On-line real-time analysis method for tobacco smoke

A real-time analysis, tobacco product technology, applied in the direction of analyzing materials, material separation, measuring devices, etc., can solve the problems of cumbersome process, unstable flue gas dynamic properties, difficult to provide information, etc., to achieve the effect of overcoming discrimination

Active Publication Date: 2015-06-17
CHINA TOBACCO HUNAN INDAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is such a problem in the smoke composition data of tobacco products detected by these methods: the objects detected by traditional smoke analysis methods are far from the smoke smoked by the actual smoking sensory evaluation, for example: smoke aged for 1 minute There are big differences with fresh flue gas: (1) The particle size of the flue gas aerosol increases rapidly, and the initial diameter of the particles is distributed between 0.01 and 1.0 μm. With the extension of time and the decrease of temperature, the particle diameter continues to increase After the flue gas is kept at room temperature for 10 seconds, the particle diameter increases to 0.1-46 μm, with an average diameter of 0.2 μm; (2) The dynamic properties of the flue gas lead to the instability of the flue gas, because the concentration of the flue gas is very High, the particles in it will condense rapidly in a short time, and the number of particles in the nascent smoke will drop to a quarter of its initial value within half a second
[0003] Theoretically speaking, a comprehensive analysis of cigarette mainstream smoke components can be achieved through modern instrumental...

Method used

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  • On-line real-time analysis method for tobacco smoke
  • On-line real-time analysis method for tobacco smoke
  • On-line real-time analysis method for tobacco smoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] Using a single-channel linear smoking machine as the smoking machine, the volume of the quantitative loop in the online pollution cleaning injector is 3mL, the cleaning solvent is chromatographically pure chloroform, and the flushing gas is nitrogen or helium (N 2 or He). Gas chromatography mass spectrometer (GC / MS) was the analytical detector. The temperature of the cigarette holder is set to 120°C, and a 44mm Cambridge filter is clamped in the cigarette holder.

[0149] Register the sample information in the GC / MS workstation control software (ie, the flue gas analysis control unit), set the analysis method conditions, and enter the ready analysis state. Operate the smoking machine to make it ready for smoking.

[0150] Insert the cigarette to be tested into the cigarette holder. Set the suction parameters in the control center (external controller) software, including the number of suction ports (the third port), the number of solvent cleaning times (2 times), N ...

Embodiment 2

[0158] The first embodiment is repeated according to the same steps described above, but the cigarette holder is empty, that is, no filter sheet or filter paper of any material is clamped. Cigarette smoke samples can be subjected to suction, automatic constant temperature quantitative sampling, GC or GC / MS analysis according to the selected program to obtain a suitable chromatogram.

Embodiment 3

[0160] Set up the instrument according to the following conditions for on-line analysis of cigarette mainstream smoke components:

[0161] 1) Temperature balance:

[0162] Set the smoke holder, injector, transfer line to a fixed temperature value and wait for them to equilibrate.

[0163] Typically, the smoke holder is 50°C, the sampler is 100°C, and the transfer line is 150°C, so as to ensure that the high boiling point components in the flue gas do not liquefy and condense.

[0164] 2) Sample suction:

[0165] The cigarette holder is directly connected to the sample inlet of the gas sampler, and the suction device is connected to the exhaust gas outlet of the gas sampler for suction. The suction device may comprise a linear smoking machine, a rotary smoking machine, a single channel smoking machine or other types of smoking machines. A typical single-channel smoking machine LM-1 such as Borgwaldt. Suction capacity, number of suction ports, suction duration, and suction f...

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Abstract

The invention discloses an on-line real-time analysis method for tobacco smoke. The method adopts an on-line real-time analyzer for tobacco smoke, and the analyzer comprises a smoking machine, a feeding and cleaning module, a smoke analysis module, a smoke holding device, a deactivated pipeline system and an external controller. A gas chromatograph or gas-mass spectrometer is used for realizing detection of sample components; the temperature-controllable smoke holding device is used for realizing selective gas filtration or total smoke analysis without filter disc through various special adsorption materials and temperature setting; the external controller is used for realizing synchronous control of the smoking machine, an on-line pollution cleaning sampler and the gas chromatograph; thus, the real-time collection and analysis of tobacco smoke is completed. The method has the characteristics of controllable suction, controllable smoke volume, controllable temperature, real-time cleaning of smoke pollution and no residues, realizes real-time on-line analysis, directly analyzes the gas components generated by tobacco burning, and avoids chemical change or loss of components in the sample processing process.

Description

technical field [0001] The invention belongs to the field of smoke analysis of tobacco products, in particular to an online real-time analysis method for smoke of tobacco products. Background technique [0002] At present, there are many methods for analysis and detection of smoke from tobacco products. When using a smoking machine to simulate human smoking behavior, a variety of traps, including Cambridge filters, electrostatic precipitators, jet impactors, cold solvents (cold traps) , solid adsorbents, and solvent traps have been used to collect mainstream smoke, and direct sampling can also complete the direct sampling analysis of gas phase components. However, there is such a problem in the smoke composition data of tobacco products detected by these methods: the objects detected by traditional smoke analysis methods are far from the smoke smoked by the actual smoking sensory evaluation, for example: smoke aged for 1 minute There are big differences with fresh flue gas:...

Claims

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Application Information

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IPC IPC(8): G01N30/02
Inventor 庹苏行杨华武王华赵瑜刘金云陈波谭新良
Owner CHINA TOBACCO HUNAN INDAL CORP
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