A cigarette mainstream smoke main component capture detection device and analysis method

Abstract

This invention discloses a device and method for capturing and detecting the main components of mainstream cigarette smoke, aiming to provide a convenient device and method for capturing and detecting the main components of mainstream cigarette smoke. The detection device includes a smoking machine, a bypass filter, a first electromagnetic reversing valve, a smoke storage device, a hollow waveguide fiber optic gas cell, an infrared spectrometer, a second electromagnetic reversing valve, a peristaltic pump, and a diaphragm pump. The smoke storage device includes a silicone gas bag with an inlet and an outlet, a manual inlet switch knob on the inlet, and a manual outlet switch knob on the outlet. The hollow waveguide fiber optic gas cell has an inlet on one side and an outlet on the other. The hollow waveguide fiber optic gas cell contains a hollow waveguide fiber, an infrared light incident deflector, and an infrared light exit deflector. The two ends of the hollow waveguide fiber are connected to the infrared light incident deflector and the infrared light exit deflector, respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette detection equipment, and in particular to a rapid and sensitive on-line cigarette mainstream smoke main component capture detection device and an analysis method thereof. Background Art

[0002] The gas inhaled into the consumer's mouth through the cigarette rod and filter rod during the burning process is the mainstream smoke. Therefore, the sensory experience of consumers is directly determined by the mainstream smoke, which also reflects the quality of cigarettes. How to stably and continuously improve the quality of cigarettes has always been the focus and direction of the tobacco industry. Therefore, fully studying the characteristics of mainstream cigarette smoke and establishing an evaluation method for mainstream smoke quality can more comprehensively reflect the sensory characteristics and technical characteristics of cigarette products, thereby helping to improve the quality of cigarette products.

[0003] Cigarette smoke is a complex aerosol, which is mainly composed of gas, solid and vapor. In the process of studying and analyzing smoke components, smoke is often divided into gas phase and particle phase based on whether it can pass through the Cambridge filter. Traditional offline mainstream smoke detection methods mostly extract or enrich the substances captured in the filter or the filtered smoke, and then analyze them by chromatography or mass spectrometry. This detection method has a complex process and a long detection cycle, while the formation of cigarette smoke is a dynamic process. After capture, pretreatment, chromatography, mass spectrometry separation and other processes, the results obtained are only the analysis of some chemical components of aged smoke and its disintegration. It cannot reflect the dynamic characteristics of the smoke generation process. For example, Shen Qinpeng et al. used liquid-gas chromatography to determine NNK in mainstream smoke (Online liquid-gas two-dimensional chromatography with high sensitivity to determine 4-(N-methylnitrosamino)-1-(2-pyridyl)-1-butanone in mainstream cigarette smoke [J]. Analytical Chemistry, 2016, 44 (06): 929-934.), and the single detection time was 45-50 minutes; Han Bing et al. used thermal desorption-gas chromatography-mass spectrometry to enrich the mainstream smoke produced by burning multiple cigarettes and analyze the organic compounds in the mainstream smoke (Thermal desorption-gas chromatography / mass spectrometry analysis of the main gas phase organic compounds in mainstream cigarette smoke [J]. Guangdong Chemical Industry, 2016, 43 (11): 262-264). Its detection cycle is long, and it is necessary to enrich the mainstream smoke of multiple cigarettes. It is impossible to reflect the quality of cigarettes at the level of a single cigarette, and at the same time meet the requirements of online, high efficiency and high precision.

[0004] Infrared spectroscopy (400-4000cm-1) is an analytical method that determines the molecular structure of substances and identifies compounds based on information such as molecular vibration and rotation. It has the advantages of rapidity, high sensitivity, and high throughput, and can uniformly obtain information on the coordinated distribution of smoke components and components in time and space. At present, this technology has been widely used in quality analysis and evaluation in the fields of petroleum, chemical industry, food, and alcohol, but there are few research reports on tobacco quality analysis and evaluation, especially the lack of relevant reports on the application of mainstream smoke quality evaluation. The main reason is that traditional gas infrared spectrometers have large dead volume, low detection sensitivity, and are difficult to seamlessly couple with smoking machines, which seriously hinders the application of gas infrared spectroscopy technology in the tobacco industry. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an online cigarette mainstream smoke main component capture detection device with a simple structure and high detection sensitivity and an analysis method thereof.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] A device for capturing and detecting the main components of mainstream cigarette smoke, comprising a smoking machine, a bypass filter, a first electromagnetic reversing valve, a smoke storage device, a hollow waveguide optical fiber gas pool, an infrared spectrometer, a second electromagnetic reversing valve, a peristaltic pump and a diaphragm air pump; the smoke storage device comprises a silica gel air bag provided with an inlet and an outlet, a manual inlet switch knob provided on the inlet, and a manual outlet switch knob provided on the outlet; an inlet is provided on one side of the hollow waveguide optical fiber gas pool, and an outlet is provided on the other side; a hollow waveguide optical fiber, an infrared light inlet deflection lens and an infrared light outlet deflection lens are provided in the hollow waveguide optical fiber gas pool; the two ends of the hollow waveguide optical fiber are respectively It is connected with the infrared light incident port deflection lens and the infrared light outlet deflection lens; the infrared spectrometer includes an infrared light incident device and a detection device; the infrared light incident device is used to provide incident light to the infrared light incident port deflection lens, and the detection device is used to receive the infrared signal emitted by the infrared light outlet deflection lens; the three ports of the first electromagnetic reversing valve are respectively connected with the smoking machine, the bypass filter and the sample inlet; the first electromagnetic valve is arranged on the pipeline connecting the first electromagnetic reversing valve and the sample inlet; the sample outlet is connected with the air inlet, and the second electromagnetic valve is arranged on the pipeline connecting the sample outlet and the air inlet; the three ports of the second electromagnetic reversing valve are respectively connected with the air outlet, the peristaltic pump and the diaphragm air pump.

[0008] Preferably, the method further comprises a heating device for controlling the temperature of the hollow core waveguide optical fiber gas pool.

[0009] Preferably, the bypass filter is a combination of an air bypass filter and an oil mist bypass filter, the filter element is made of polypropylene, the inner diameter of the air bypass filter element is 5 microns, and the inner diameter of the oil mist bypass filter element is 0.3 microns.

[0010] An analysis method of a device for capturing and detecting the main components of mainstream cigarette smoke, which uses the device for capturing and detecting the main components of mainstream cigarette smoke as described above, and the analysis method comprises the following steps:

[0011] (1) Preheating and pretreatment of infrared spectrometer: Turn on the Fourier infrared spectrometer and preheat it; open the passage between the first electromagnetic reversing valve and the bypass filter, open the first electromagnetic valve and the second electromagnetic valve, and open the passage between the second electromagnetic reversing valve and the diaphragm air pump; connect ambient air to the bypass air inlet, turn on the diaphragm air pump, suck in ambient air or nitrogen, and exhaust the residual gas in the air pipe, air bag, and hollow waveguide optical fiber gas pool for 5 minutes;

[0012] (2) Background signal acquisition: After pretreatment, turn off the diaphragm air pump and the second solenoid valve; let it stand for 30 seconds, collect the infrared spectrum signal at this time, and use this signal as the background signal;

[0013] (3) Smoke capture and preparation: Switch the first electromagnetic reversing valve to connect the passage of the smoking machine, and empty the gas in the silica gel air bag through the air bag cleaning step of the smoking machine; turn on the smoking machine and let the smoking machine smoke a single cigarette, and collect the whole smoke generated by the single cigarette through the silica gel air bag;

[0014] (4) Collecting spectra: After the smoke collection is completed, close the first solenoid valve, open the second solenoid valve, and switch the second solenoid reversing valve to connect the peristaltic pump; set the speed of the peristaltic pump to 35 ml / min, turn on the peristaltic pump, and allow the smoke in the air bag to enter the hollow waveguide fiber gas pool; at the same time, measure the infrared spectrum every 30 seconds; after the peristaltic pump has been turned on for 7 minutes, turn off the peristaltic pump and close the second solenoid valve; let the smoke stand in the hollow waveguide fiber gas pool for 5 minutes, and measure the infrared spectrum in a stable state every 30 seconds while standing;

[0015] (5) Cleaning device: switch the passage from the first electromagnetic reversing valve to the bypass filter, open the first electromagnetic valve, open the second electromagnetic valve; open the passage between the second electromagnetic reversing valve and the diaphragm air pump; start the diaphragm air pump to clean the pipeline, the silica gel air bag, and the residual smoke in the hollow waveguide optical fiber gas pool;

[0016] (6) Data analysis.

[0017] Preferably, in the steps, the smoking machine needs to take 7-8 puffs to smoke a single cigarette, each puff produces 35 ml of smoke, and the total amount of smoke from a single cigarette is 245 ml-280 ml.

[0018] Preferably, in the steps, the capacity of the hollow waveguide optical fiber gas pool is 100 ml.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) The smoke storage device of the present invention is a dual-channel silica gel air bag structure. The silica gel air bag is soft and can greatly reduce the resistance of mainstream smoke when entering the air bag, so that the smoke is fully absorbed. This makes the storage device have low pressure requirements for the gas source, can capture smoke more efficiently, and has a very small dead volume, which is very conducive to the rapid analysis of mainstream smoke and improves the accuracy and repeatability of the analysis. The detection sensitivity of the present invention can reach 10ppb level. Its detection is simple and fast, and can fully meet the analysis needs of most trace gases.

[0021] (2) The detection device of the present invention has a simple structure and a wide range of applications. It can directly capture direct current flue gas without pretreatment and is flexible and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the structure of the detection device in the present invention.

[0024] Figure 2 It is the gradient infrared spectrum of the flue gas sample of the embodiment.

[0025] Figure 3 It is the infrared spectrum of the flue gas sample in the embodiment under the stable state. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the following description, in order to clearly show the structure and working mode of the present invention, the drawings will be used as a reference and described with the help of many directional terms, but the words "front", "back", "left", "right", "up", "down" and so on should be understood as convenient terms, and should not be understood as restrictive terms.

[0027] A device for capturing and detecting the main components of mainstream cigarette smoke, such as Figure 1 As shown, it includes a smoking machine 1, a bypass filter 1.1, a first electromagnetic reversing valve 2, a smoke storage device 3, a hollow waveguide fiber gas pool 4, an infrared spectrometer, a second electromagnetic reversing valve 5, a peristaltic pump 6 and a diaphragm air pump 7; the smoke storage device 3 includes a silica gel air bag 3.1 on which a sample inlet 3.2 and a sample outlet 3.3 are arranged, a sample inlet manual switch knob 3.4 arranged on the sample inlet 3.2, and a sample outlet manual switch knob 3.5 arranged on the sample outlet 3.3; one side of the hollow waveguide fiber gas pool 4 is provided with an air inlet 4.2, and the other side is provided with an air outlet 4.3; the hollow waveguide fiber gas pool 4 is provided with a hollow waveguide fiber 4.1, an infrared light incident port deflection lens 4.4 and an infrared light outlet deflection lens 4.5; both ends of the hollow waveguide fiber 4.1 are respectively connected to the infrared light incident port deflection lens 4.4 and the infrared light outlet deflection lens 4.5; the infrared spectrometer includes an infrared light incident device 4.6 and a detection device 4.7; the infrared light incident device 4.6 is used to provide incident light to the infrared light outlet deflection lens 4.4, and the detection device 4.7 is used to receive the infrared signal emitted by the infrared light outlet deflection lens 4.5; the three ports of the first electromagnetic reversing valve 1 are respectively connected to the smoking machine 1, the bypass filter 1.1 and the sampling port 3.2; the first electromagnetic valve 3.6 is arranged on the pipeline connecting the first electromagnetic reversing valve 1 and the sampling port 3.2; the sampling port 3.3 is connected to the air inlet 4.2, and the second electromagnetic valve 3.7 is arranged on the pipeline connecting the sampling port 3.3 and the air inlet 4.2; the three ports of the second electromagnetic reversing valve 5 are respectively connected to the air outlet 4.3, the peristaltic pump 6 and the diaphragm air pump 7.

[0028] It also includes a heating device (not shown in the figure) for controlling the temperature of the hollow waveguide fiber gas pool 4, the heating device includes a heat preservation device and a plurality of temperature sensors arranged on the pipe body, and a heating device and an embedded controller that wrap the hollow waveguide fiber gas pool. The heating device facilitates the hollow waveguide fiber gas pool to be within a reasonable temperature range. The heating device has an excellent heat preservation and constant temperature function, can effectively reduce the heat loss of the gas in the pipeline, ensure the temperature stability of the hollow waveguide fiber gas pool, and improve the precision and accuracy of the analysis.

[0029] The bypass filter 1.1 is a combination of an air bypass filter and an oil mist bypass filter, the filter element is made of polypropylene, the inner diameter of the air bypass filter element is 5 microns, and the inner diameter of the oil mist bypass filter element is 0.3 microns.

[0030] An analysis method of a device for capturing and detecting the main components of mainstream cigarette smoke, which uses the device for capturing and detecting the main components of mainstream cigarette smoke as described above, and the analysis method comprises the following steps:

[0031] (1) Preheating and pretreatment of infrared spectrometer: Turn on the Fourier infrared spectrometer and preheat it; open the passage between the first electromagnetic reversing valve 2 and the bypass filter 1.1, open the first electromagnetic valve 3.6 and the second electromagnetic valve 3.7, and open the passage between the second electromagnetic reversing valve 5 and the diaphragm air pump 7; connect ambient air to the bypass air inlet, turn on the diaphragm air pump 7, suck in ambient air or nitrogen, and exhaust the residual gas in the air pipe, air bag, and hollow waveguide optical fiber gas pool for 5 minutes;

[0032] (2) Background signal acquisition: After pre-processing, turn off the diaphragm air pump and the second solenoid valve 3.7; let it stand for 30 seconds, collect the infrared spectrum signal at this time, and use this signal as the background signal;

[0033] (3) Smoke capture and preparation: Switch the first electromagnetic reversing valve 2 to connect the passage of the smoking machine 1, and empty the gas in the silica gel air bag 3.1 through the air bag cleaning step of the smoking machine; turn on the smoking machine and let the smoking machine smoke a single cigarette, and collect the whole smoke generated by the single cigarette through the silica gel air bag; the smoking machine needs to take 7-8 puffs to smoke a single cigarette, and each puff produces 35ml of smoke, and the total amount of whole smoke of a single cigarette is 245ml-280ml; the smoking machine can adopt the RM1 / PULS single-channel smoking machine (Borgwaldt KC Company, Germany);

[0034] (4) Collecting spectrum: After the smoke collection is completed, close the first solenoid valve 3.6, open the second solenoid valve 3.7, and switch the passage of the second solenoid reversing valve 5 to the peristaltic pump 6; set the speed of the peristaltic pump to 35 ml / min, turn on the peristaltic pump, and allow the smoke in the air bag to enter the hollow waveguide fiber gas pool, the capacity of the hollow waveguide fiber gas pool is 100 ml; at the same time, measure the infrared spectrum every 30 seconds; after the peristaltic pump is turned on for 7 minutes, turn off the peristaltic pump 5 and close the second solenoid valve 3.7; let the smoke stand in the hollow waveguide fiber gas pool for 5 minutes, and measure the infrared spectrum in a stable state every 30 seconds while standing;

[0035] (5) Cleaning device: switch the passage from the first electromagnetic reversing valve 2 to the bypass filter 1.1, open the first electromagnetic valve 3.6, open the second electromagnetic valve 3.7; open the passage between the second electromagnetic reversing valve 5 and the diaphragm air pump 7; start the diaphragm air pump 7 to clean the pipeline, the silica gel air bag, and the residual smoke in the hollow waveguide optical fiber gas pool;

[0036] (6) Data analysis.

[0037] During the analysis, the first electromagnetic reversing valve, the second electromagnetic reversing valve, the first electromagnetic valve, the second electromagnetic valve, the peristaltic pump and the diaphragm air pump are all controlled by an embedded controller. Example

[0038] Experimental materials: Hongtashan hard classic cigarettes, Yuxi hard harmonious cigarettes;

[0039] Use the above test materials to perform analysis according to the following steps:

[0040] (1) Preheating and pretreatment of infrared spectrometer: Turn on the Fourier infrared spectrometer and preheat it; open the passage between the first electromagnetic reversing valve 2 and the bypass filter 1.1, open the first electromagnetic valve 3.6 and the second electromagnetic valve 3.7, and open the passage between the second electromagnetic reversing valve 5 and the diaphragm air pump 7; connect ambient air to the bypass air inlet, turn on the diaphragm air pump 7, suck in ambient air or nitrogen, and exhaust the residual gas in the air pipe, air bag, and hollow waveguide optical fiber gas pool for 5 minutes;

[0041] (2) Background signal acquisition: After pre-processing, turn off the diaphragm air pump and the second solenoid valve 3.7; let it stand for 30 seconds, collect the infrared spectrum signal at this time, and use this signal as the background signal;

[0042] (3) Smoke capture and preparation: Switch the first electromagnetic reversing valve 2 to connect the passage of the smoking machine 1, and empty the gas in the silica gel air bag 3.1 through the air bag cleaning step of the smoking machine; turn on the smoking machine and use the smoking machine to smoke a single cigarette (Hongtashan hard classic cigarette, Yuxi hard harmony cigarette), and collect the whole smoke generated by the single cigarette through the silica gel air bag; the smoking machine needs to take 7-8 puffs to smoke a single cigarette, and each puff produces 35ml of smoke, and the total amount of whole smoke of a single cigarette is 245ml-280ml; the smoking machine can adopt the RM1 / PULS single-channel smoking machine (Borgwaldt KC, Germany);

[0043] (4) Collecting spectrum: After the smoke collection is completed, close the first solenoid valve 3.6, open the second solenoid valve 3.7, and switch the passage of the second solenoid reversing valve 5 to the peristaltic pump 6; set the speed of the peristaltic pump to 35ml / min, turn on the peristaltic pump, and let the smoke in the air bag enter the hollow waveguide fiber gas pool. The capacity of the hollow waveguide fiber gas pool is 100ml; at the same time, measure the infrared spectrum every 30 seconds to obtain the following Figure 2 The flue gas gradient infrared spectrum shown in FIG. 7; after the peristaltic pump is turned on for 7 minutes, the peristaltic pump 5 is turned off, and the second electromagnetic valve 3.7 is closed; the flue gas is allowed to stand in the hollow waveguide optical fiber gas pool for 5 minutes, and the infrared spectrum in the steady state is measured every 30 seconds while standing, and the following is obtained: Figure 3 The infrared spectrum of the stable flue gas is shown;

[0044] (5) Cleaning device: switch the passage from the first electromagnetic reversing valve 2 to the bypass filter 1.1, open the first electromagnetic valve 3.6, open the second electromagnetic valve 3.7; open the passage between the second electromagnetic reversing valve 5 and the diaphragm air pump 7; start the diaphragm air pump 7 to clean the pipeline, the silica gel air bag, and the residual smoke in the hollow waveguide optical fiber gas pool;

[0045] (6) Data analysis: Figure 2 is the infrared spectrum collected during the flue gas sampling process. Figure 2 It can be seen that the infrared spectrum of the trace flue gas at the beginning of sampling can be measured, and the infrared spectrum that changes gradiently with the linear increase of the flue gas volume can also be observed, which has the characteristics of high sensitivity and fast response. Figure 3 To complete the infrared spectrum of the flue gas in a stable state after sampling, Figure 3 It can be seen that the detection method of the present invention has good reproducibility for the infrared spectrum information of mainstream smoke, and can accurately capture the information of the main harmful components in mainstream smoke, such as carbon monoxide, hydrocyanic acid, ammonia and the like.

[0046] The present invention adopts the national standard method to collect mainstream smoke, allowing the smoking machine to draw for 2 seconds per puff, each puff produces 35ml of mainstream smoke, and the interval between two puffs is 1 minute. It takes about 7-8 puffs to complete the puffing of a single cigarette. The 7-8 puffs of smoke from a single cigarette are pre-mixed to effectively avoid the sudden change of the composition of the mainstream smoke from a single puff, ensure the accuracy and stability of the subsequent online spectral analysis, and further improve the stability of the mainstream smoke composition. The present invention adopts a quantifiable peristaltic pump, sets the flow rate of the peristaltic pump at 35ml / min, allows the smoke to continuously and stably enter the hollow waveguide fiber gas pool, and avoids the unstable flow of gas affecting the detection results.

[0047] The inner wall of the hollow waveguide fiber in the hollow waveguide fiber gas pool of the present invention is an Ag / AgI thin film layer, so that signals other than wavelengths of 2 to 20 microns can be filtered out, thereby enhancing efficiency. At the same time, the incident light can be reflected multiple times in the hollow waveguide fiber gas pool, increasing the contact frequency with the gas to be measured, increasing the absorption intensity of the gas to be measured in the mid-infrared band, and further improving the sensitivity and accuracy of the system. With the accumulation of a large amount of spectral data, analytical chemistry technology and deep learning methods are applied to accurately extract the characteristics and contents of the main components in the mainstream smoke of cigarettes from the spectral data, and construct a feature library of mainstream smoke of different types of cigarettes. Realizing online real-time detection of mainstream cigarette smoke is a simple, fast and sensitive instrumental analysis method for mainstream smoke.

[0048] The present invention can comprehensively analyze the mainstream smoke components produced after smoking and burning a cigarette. The identification process is accurate, rapid and highly sensitive. It is not only suitable for the detection of the components of combustion smoke in the cigarette industry, but also is expected to meet the evaluation needs of the mainstream smoke quality of cigarette products, and provide technical support for subsequent formula design and process quality control.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An analysis method for a device for capturing and detecting the main components of mainstream cigarette smoke, characterized in that: A device for capturing and detecting the main components of mainstream cigarette smoke is used, the device comprising a smoking machine (1), a bypass filter (1.1), a first electromagnetic reversing valve (2), a smoke storage device (3), a hollow waveguide optical fiber gas pool (4), an infrared spectrometer, a second electromagnetic reversing valve (5), a peristaltic pump (6) and a diaphragm air pump (7); the smoke storage device (3) comprises a silica gel air bag (3.1) on which an inlet (3.2) and an outlet (3.3) are arranged. A manual sample inlet switch knob (3.4) is arranged on the sample inlet (3.2), and a manual sample outlet switch knob (3.5) is arranged on the sample outlet (3.3); one side of the hollow waveguide optical fiber gas pool (4) is provided with an inlet (4.2), and the other side is provided with an outlet (4.3); a hollow waveguide optical fiber (4.1), an infrared light inlet deflection lens (4.4) and an infrared light outlet deflection lens (4.5) are arranged in the hollow waveguide optical fiber gas pool (4); the hollow waveguide optical fiber (4.1) ) are respectively connected to the infrared light incident port deflection lens (4.4) and the infrared light exit port deflection lens (4.5); the infrared spectrometer comprises an infrared light incident device (4.6) and a detection device (4.7); the infrared light incident device (4.6) is used to provide incident light to the infrared light incident port deflection lens (4.4), and the detection device (4.7) is used to receive the infrared signal emitted by the infrared light exit port deflection lens (4.5); the three ports of the first electromagnetic reversing valve (2) are respectively connected to the smoking The machine (1), the bypass filter (1.1) and the sample inlet (3.2) are connected; a first solenoid valve (3.6) is arranged on the pipeline connecting the first solenoid reversing valve (2) and the sample inlet (3.2); the sample outlet (3.3) is connected to the air inlet (4.2), and a second solenoid valve (3.7) is arranged on the pipeline connecting the sample outlet (3.3) and the air inlet (4.2); three ports of the second solenoid reversing valve (5) are respectively connected to the air outlet (4.3), the peristaltic pump (6) and the diaphragm air pump (7); The analytical method comprises the following steps: (1) Preheating and pretreatment of infrared spectrometer: Turn on the Fourier infrared spectrometer and preheat it; open the passage between the first electromagnetic reversing valve (2) and the bypass filter (1.1), open the first electromagnetic valve (3.6) and the second electromagnetic valve (3.7), and open the passage between the second electromagnetic reversing valve (5) and the diaphragm air pump (7); connect ambient air to the bypass air inlet, turn on the diaphragm air pump (7), suck in ambient air or nitrogen, and exhaust the residual gas in the air pipe, air bag, and hollow waveguide optical fiber gas pool for 5 minutes; (2) Background signal acquisition: After pre-processing, turn off the diaphragm air pump and the second solenoid valve (3.7); let it stand for 30 seconds, collect the infrared spectrum signal at this time, and use this signal as the background signal; (3) Smoke capture and preparation: switching the first electromagnetic reversing valve (2) to connect the passage of the smoking machine (1), and emptying the gas in the silica gel air bag (3.1) through the air bag cleaning step of the smoking machine; turning on the smoking machine and making the smoking machine smoke a single cigarette, and collecting the whole smoke generated by the single cigarette through the silica gel air bag; (4) Collecting spectrum: After the smoke collection is completed, close the first solenoid valve (3.6), open the second solenoid valve (3.7), and switch the passage of the second solenoid reversing valve (5) to the peristaltic pump (6); set the speed of the peristaltic pump to 35 ml / min, start the peristaltic pump, and allow the smoke in the air bag to enter the hollow waveguide fiber gas pool; at the same time, measure the infrared spectrum every 30 seconds; after the peristaltic pump has been turned on for 7 minutes, turn off the peristaltic pump (6) and close the second solenoid valve (3.7); allow the smoke to stand in the hollow waveguide fiber gas pool for 5 minutes, and measure the infrared spectrum in a stable state every 30 seconds while standing; (5) Cleaning device: switch the passage from the first electromagnetic reversing valve (2) to the bypass filter (1.1), open the first electromagnetic valve (3.6), open the second electromagnetic valve (3.7); open the passage from the second electromagnetic reversing valve (5) to the diaphragm air pump (7); start the diaphragm air pump (7) to clean the pipeline, the silica gel air bag, and the residual smoke in the hollow waveguide optical fiber gas pool; (6) Data analysis; In step (3), the smoking machine needs to take 7-8 puffs to smoke a single cigarette, each puff produces 35 ml of smoke, and the total amount of smoke from a single cigarette is 245 ml-280 ml.

2. The analysis method of the device for capturing and detecting the main components of mainstream cigarette smoke according to claim 1, characterized in that: It also includes a heating device for controlling the temperature of the hollow waveguide optical fiber gas pool (4).

3. The analysis method of the device for capturing and detecting the main components of mainstream cigarette smoke according to claim 1, characterized in that: The bypass filter (1.1) is a combination of an air bypass filter and an oil mist bypass filter, the filter element is made of polypropylene, the inner diameter of the air bypass filter element is 5 microns, and the inner diameter of the oil mist bypass filter element is 0.3 microns.

4. The analysis method of the device for capturing and detecting the main components of mainstream cigarette smoke according to claim 1, characterized in that: In the step (4), the capacity of the hollow waveguide optical fiber gas pool is 100 ml.

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