Method and device for trapping nicotine in flue gas

Abstract

The invention relates to a method and a device for trapping nicotine in flue gas, and belongs to the field of trapping nicotine in flue gas. The trapping method comprises the following steps: smoking a to-be-detected cigarette puff by puff by using a smoking machine suction pipeline, and enabling smoke generated by each puff to sequentially flow through a particulate nicotine trapping module and an absorption solvent module to realize independent trapping of particulate nicotine and gas-phase nicotine; after each smoking is finished, a smoking pipeline of the smoking machine is switched to suction air, and residual smoke in the smoking pipeline of the smoking machine flows through the particulate nicotine trapping module and the solvent absorption module again by utilizing the air until the smoking of the to-be-detected cigarette is finished. According to the method, the empty smoking operation is performed after each smoking of the to-be-detected cigarette is finished, so that nicotine particulate matters and gas-phase matters generated by smoking are instantly captured and absorbed, mutual conversion of the nicotine particulate matters and the gas-phase matters caused by deposition and aging of nicotine is avoided, and the composition conditions of the gas-phase matters and the particulate matters of the nicotine are truly reflected.

Description

Technical Field

[0001] The invention relates to a method and a device for capturing nicotine in smoke, belonging to the field of capturing nicotine in smoke. Background Art

[0002] Smoking tobacco products include cigarettes, heated cigarettes, and electronic cigarettes. There are many alkaloids in tobacco, and nicotine is the component with the highest content, accounting for about 95% of the total alkaloids in tobacco. At present, the conventional control index of tobacco products by domestic and foreign regulatory agencies is nicotine content (μg·g -1 ).

[0003] Nicotine, as a key component of mainstream cigarette smoke, has a significant impact on the sensory quality of cigarettes. When smoking a cigarette, the components in the tobacco undergo complex changes such as combustion, pyrolysis and distillation to produce thousands of chemical components, which diffuse outward to form an aerosol in which gas and particles coexist. Therefore, in order to fully and truly reflect all the toxic effects in the smoke aerosol, it is necessary to be able to comprehensively capture the particulate and gas phases in the smoke aerosol.

[0004] At present, the detection method of relevant components of smoking tobacco products after smoking usually uses a linear smoking machine and Cambridge filter to capture smoke puff by puff, enrich the relevant components to be detected on the Cambridge filter, and then use organic solvents to extract them, and use large-scale instruments such as gas phase and gas quality to perform qualitative and quantitative analysis to obtain the content of relevant components. This method cannot completely extract the smoke in the cavity within the interval between two normal puffs (usually set to 1 minute), resulting in smoke deposition, and the residual smoke will age and mix with fresh smoke, so that the measured nicotine is almost entirely distributed in the particle phase, resulting in poor accuracy of the measured nicotine content, and cannot truly reflect the feelings brought by the nicotine gas phase and particle phase when humans smoke. Summary of the invention

[0005] The object of the present invention is to provide a method for capturing nicotine in smoke, so as to solve the problem of poor accuracy in capturing gas-phase nicotine and particle-phase nicotine in the prior art.

[0006] The second object of the present invention is to provide a device for capturing nicotine in smoke to solve the problem of poor accuracy in capturing gas-phase nicotine and particle-phase nicotine in the prior art.

[0007] In order to achieve the above purpose, the technical solution of the present invention is:

[0008] A method for capturing nicotine in smoke comprises the following steps: using a smoking pipe of a smoking machine to draw puffs of a cigarette to be tested one by one, and the smoke generated by each puff flows through a particle phase nicotine capture module and an absorption solvent module in sequence, so as to achieve independent capture of particle phase nicotine and gas phase nicotine; after each puff, the smoking pipe of the smoking machine is switched to draw air, and the smoke remaining in the smoking pipe of the smoking machine is made to flow through the particle phase nicotine capture module and the absorption solvent module again by using air, until the smoking of the cigarette to be tested is completed.

[0009] The method for capturing nicotine in smoke of the present invention is a pioneering invention. The present invention performs an empty extraction operation after each puff of the tested cigarette, so that the nicotine particle phase and gas phase generated by the puff are instantly captured and absorbed, avoiding the mutual conversion of nicotine particle phase and gas phase caused by the deposition and aging of nicotine, thereby truly reflecting the composition of nicotine gas phase and particle phase, and improving the accuracy of nicotine capture.

[0010] In order to avoid introducing impurities in the air, preferably, the sucked air is the purified air sucked to assist in capturing the particulate phase nicotine and the gas phase nicotine.

[0011] In order to better purify the air, preferably, the purification is performed by filtering with Cambridge filter and activated carbon in sequence.

[0012] Preferably, the particle phase nicotine capture module is an electrostatic collector. Compared with the Cambridge filter, the use of an electrostatic collector to capture particle phase nicotine in smoke can largely avoid the adsorption of gas phase nicotine, further improving the accuracy of nicotine capture.

[0013] Preferably, air is sucked in 4 to 6 seconds after each puff, and the duration of air sucking is 4 to 6 seconds.

[0014] In order to better extract the particulate matter and gas phase matter in nicotine, preferably, methanol is used to wash the electrostatic collector, and the absorption liquid in the absorption bottle is methanol.

[0015] In order to further improve the capture efficiency of gas-phase nicotine, preferably, the absorption bottle is placed in a cold trap composed of dry ice / isopropanol.

[0016] The second technical solution of the present invention is:

[0017] A device for capturing nicotine in smoke comprises a smoke suction pipeline, wherein the smoke suction pipeline comprises a first connecting pipeline connected between a cigarette holder and a smoke capturing device, and a second connecting pipeline connected between the smoke capturing device and a smoking unit of a smoking machine, and further comprises an air extraction auxiliary pipeline, wherein the air extraction auxiliary pipeline comprises an air inlet pipeline connected to the first connecting pipeline and an air outlet pipeline connected to the second connecting pipeline, wherein an outlet of the air outlet pipeline is connected to a sampling pump; the smoking machine sampling device further comprises a control valve for controlling the alternate opening of the smoke suction pipeline and the air extraction auxiliary pipeline; the smoke capturing device comprises a particle phase nicotine capturing module and an absorption solvent module which are sequentially connected along the flow direction of the smoke.

[0018] The present invention connects an air extraction auxiliary pipeline to the smoke suction pipeline, and controls the smoke suction pipeline and the air extraction auxiliary pipeline to be opened alternately by a control valve, so that the air extraction auxiliary pipeline performs air extraction during the suction interval of the smoke suction pipeline, thereby accelerating the capture and absorption of smoke on the smoke suction pipeline by the electrostatic collector and the absorption bottle, avoiding nicotine deposition and aging in the smoke suction pipeline, improving the accuracy of nicotine capture, and truly reflecting the composition of gas phase and particle phase of nicotine.

[0019] The air outflow pipeline can reduce the gas volume, that is, the pressure, downstream of the smoke capture device. Together with the air inlet pipeline, the particulate nicotine in the smoke suction pipeline can be instantly captured by the particulate nicotine capture module and the gaseous nicotine can be quickly absorbed by the absorption solvent module, thereby avoiding nicotine deposition and aging in the pipeline.

[0020] Preferably, a first control valve is provided between the connection point of the air inlet pipeline, the first connecting pipeline and the cigarette holder, a second control valve is provided on the air inlet pipeline, and a third control valve is provided on the air outflow pipeline and the second connecting pipeline.

[0021] When the third control valve is connected to the second connecting pipeline and the first control valve is opened and the second control valve is closed, the smoke suction pipeline is opened and the air extraction auxiliary pipeline is closed; when the third control valve is connected to the air outflow pipeline and the second control valve is opened and the first control valve is closed, the air extraction auxiliary pipeline is opened and the smoke suction pipeline is closed.

[0022] Preferably, the inlet of the air inlet pipeline is connected to an air purification device; the particle phase nicotine capture module is an electrostatic collector, and the absorption solvent module is an absorption bottle. The air purification device purifies the air introduced from the outside to ensure that the air added to the pipeline will not bring in new pollution.

[0023] Preferably, the air purification device comprises a Cambridge filter and an activated carbon filter device which are sequentially connected along the air flow direction.

[0024] Preferably, the air inlet pipeline, the air outflow pipeline, and the second connecting pipeline are integrated in the air extraction auxiliary controller. Integrating the second connecting pipeline, the air inlet pipeline, and the air outflow pipeline in one air extraction auxiliary controller facilitates the control and switching of the smoke extraction connecting pipeline and the air outflow pipeline, and is more convenient for installation and use.

[0025] Preferably, the device for capturing nicotine in smoke also includes an air extraction auxiliary branch connected to the air outflow pipeline, the air extraction auxiliary branch having an air inlet; a sampling pump normally open valve is provided on the air extraction auxiliary branch, which is opened when smoke is extracted and closed when the air extraction auxiliary pipeline is opened. Such a setting can prevent the flow of the sampling pump from failing to meet the extraction requirements in a short time when the smoke extraction pipeline and the air extraction auxiliary pipeline are switched in a short time, and avoid damage to the instrument caused by frequent switching of the sampling pump, thereby improving the stability of the sampling pump.

[0026] Further preferably, the air inlet of the air extraction auxiliary branch is connected to an air purification device, which includes a Cambridge filter and an activated carbon filter device connected in sequence along the air flow direction.

[0027] Further preferably, the air extraction auxiliary branch, the air inlet pipeline, the air outlet pipeline, and the second connecting pipeline are integrated in the air extraction auxiliary controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a device for capturing nicotine in smoke according to Example 1 of the present invention;

[0029] Figure 2 It is a front view of the air pumping auxiliary controller of Example 1 of the present invention;

[0030] Figure 3 A top view of the air pumping auxiliary controller according to Embodiment 1 of the present invention;

[0031] Figure 4 This is a schematic diagram of the working state of the device for capturing nicotine in smoke according to Example 1 of the present invention;

[0032] In the figure, 1-the second Cambridge filter, 2-the second activated carbon filter device, 3-the shell, 4-the touch screen, 5-the air interface, 6-the smoke interface, 7-the first Cambridge filter, 8-the first activated carbon filter device, 9-the smoking machine interface, 10-the sampling pump interface, 11-the cigarette holder, 12-the first control valve, 13-the electrostatic collector, 14-the absorption bottle, 15-the second control valve, 16-the third control valve, 17-the fourth control valve, 18-the smoking machine suction unit, 19-the air suction auxiliary controller, 20-the sampling pump. DETAILED DESCRIPTION

[0033] The present invention sucks air from the suction pipeline of the smoking machine after each puff, so that the nicotine particulate matter and gaseous matter generated by the puff are instantly captured and absorbed, and the deposition and aging of nicotine leading to the mutual transformation of the nicotine particulate matter and gaseous matter are avoided, thereby truly reflecting the composition of the nicotine gaseous matter and particulate matter, and improving the accuracy of nicotine capture.

[0034] The technical solution of the present invention is further described below in conjunction with specific implementation methods.

[0035] 1. The specific embodiment of the device for capturing nicotine in smoke of the present invention is as follows:

[0036] Example 1

[0037] The device for capturing nicotine in the smoke of this embodiment is as follows: Figure 1 As shown, it includes a smoke suction pipeline, an air suction auxiliary pipeline, and an air suction auxiliary branch. The smoke suction pipeline includes a cigarette holder 11, a first connecting pipeline, an electrostatic collector 13, an absorption bottle 14, a second connecting pipeline, and a smoking machine suction unit 18 connected in sequence. The first connecting pipeline is provided with a first control valve 12 to control the suction of the cigarette holder 11. The function of the smoke suction pipeline is to suck the cigarette to be tested on the cigarette holder 11, so that the smoke generated by the suction is sequentially captured by the electrostatic collector 13 and the absorption bottle 14, and finally reaches the smoking machine suction unit 18.

[0038] The air extraction auxiliary pipeline includes the first Cambridge filter 7, the first activated carbon filter device 8, the air inlet pipeline, the electrostatic collector 13, the absorption bottle 14, the air outflow pipeline, and the sampling pump 20 connected in sequence. The function of the air extraction auxiliary pipeline is to inhale the purified air into the first connecting pipeline of the flue gas suction pipeline, pass through the electrostatic collector 13 and the absorption bottle 14 in sequence, so that the flue gas in the flue gas suction pipeline is captured by the electrostatic collector 13 and the absorption bottle 14 in time, and then reach the sampling pump 20 through the air outflow pipeline to discharge the air.

[0039] A second control valve 15 is provided on the air inlet pipeline to control the opening and closing of air suction. A third control valve 16 is provided at the connection between the air outlet pipeline and the second connecting pipeline. The opening and closing characteristics of the third control valve 16 are that the upper connection opens the second connecting pipeline of the smoke suction pipeline, and the lower connection opens the air outlet pipeline.

[0040] The air pumping auxiliary branch includes a second Cambridge filter 1, a second activated carbon filter device 2, a fourth control valve 17, and a sampling pump 20 connected in sequence. The opening and closing characteristics of the fourth control valve 17 are that the air pumping auxiliary branch is opened when connected to the upper route, and the air pumping auxiliary pipeline is opened when connected to the lower route.

[0041] An alternative method in other implementation scenarios is that a control valve is provided on the second connecting pipeline of the smoke extraction pipeline, a control valve is provided on the air extraction auxiliary branch, and a control valve is provided between the intersection of the air extraction outflow pipeline with the air extraction auxiliary branch and the intersection with the second connecting pipeline. The three control valves cooperate to control the alternating opening of the smoke extraction pipeline and the air extraction auxiliary pipeline.

[0042] The specific use process of the device is as follows:

[0043] When smoking a cigarette, insert the cigarette into the cigarette holder 11 of the smoking machine, open the smoking unit 18 of the smoking machine, and at the same time open the first control valve 12, the upper road of the third control valve 16, and the upper road of the fourth control valve 17, and close the second control valve 15, that is, open the smoke suction pipeline and the air extraction auxiliary branch, and close the air extraction auxiliary pipeline. After detecting that the smoke suction pipeline has been sucked, close the first control valve 12, open the second control valve 15, the lower road of the third control valve 16, and the lower road of the fourth control valve 17, that is, open the air extraction auxiliary pipeline, close the smoke suction pipeline and the air extraction auxiliary branch, so that a passage is formed between the air and the sampling pump 20, and the smoke suction pipeline is air-extracted. In this way, the smoke suction pipeline and the air extraction auxiliary pipeline are sucked alternately.

[0044] In this embodiment, the second connecting pipeline of the device for capturing nicotine in smoke, the air inlet pipeline, the second control valve 15, the air outlet pipeline, the third control valve 16, the air extraction auxiliary branch, and the fourth control valve 17 are integrated into an air extraction auxiliary controller 19, so that the air extraction auxiliary controller 19 can be directly used for capturing nicotine in smoke after simple assembly.

[0045] The front view of the air pumping auxiliary controller 19 is as follows Figure 2 As shown, the top view is Figure 3 As shown. Specifically, it includes a housing 3, on which a touch screen 4, a smoke interface 6, an air interface 5, a smoking machine interface 9, a sampling pump interface 10, and a first air inlet and a second air inlet are provided; a smoke suction connection pipeline is connected between the smoke interface 6 and the smoking machine interface 9, an air inlet pipeline is connected between the first air inlet and the air interface 5, and an air outflow pipeline is connected between the smoke interface 6 and the sampling pump interface 10, and an air extraction auxiliary branch is connected between the second air inlet and the sampling pump interface 10; a second control valve 15 is provided on the air inlet pipeline, a third control valve 16 is provided at the connection between the smoke suction connection pipeline and the air outflow pipeline, a fourth control valve 17 is provided on the air extraction auxiliary branch, and the fourth control valve 17 and the third control valve 16 are connected by pipelines. The working schematic diagram of the nicotine capture device in smoke of this embodiment is shown in FIG. Figure 4 shown.

[0046] 2. Embodiments of the method for capturing nicotine in smoke of the present invention

[0047] Example 2

[0048] The method for capturing nicotine in smoke of this embodiment comprises the following steps: using a smoking machine suction pipeline to draw puffs from a cigarette to be tested one by one, and the smoke generated by each puff flows through an electrostatic collector and an absorption bottle in sequence, so as to achieve independent capture of particulate nicotine and gaseous nicotine; after each puff, the smoking machine suction pipeline is switched to suction air, and the smoke remaining in the smoking machine suction pipeline is made to flow through the electrostatic collector and the absorption bottle again by using air, and the smoking machine suction and air suction are performed alternately until the smoking of the cigarette to be tested is completed, wherein the sucked air is filtered through a Cambridge filter and activated carbon in sequence.

[0049] Taking the ISO standard suction mode as an example, the following steps are adopted:

[0050] The patient took a puff every 60 seconds, with a puff volume of 35 mL and a puff duration of 2 seconds. Five reference cigarettes were smoked, and the particulate nicotine and gaseous nicotine in the smoke aerosol were captured by an electrostatic collector 13 and an absorption bottle 14, respectively. When smoking a cigarette, insert the cigarette into the cigarette holder 11 of the smoking machine, open the air pumping auxiliary controller 19, the smoking machine suction unit 18 and the sampling pump 20, and after the air pumping auxiliary controller 19 detects the smoking machine, open the first control valve 12, the upper road of the third control valve 16, and the upper road of the fourth control valve 17, and close the second control valve 15, so that the cigarette and the smoking machine suction unit 18 form a passage, and the sampling pump 20 forms a passage with the second Cambridge filter 1 and the second activated carbon filter device 2; 4 seconds after the end of the suction, the air pumping auxiliary controller 19 issues an instruction to close the first control valve 12, open the second control valve 15, the lower road of the third control valve 16, and the lower road of the fourth control valve 17, and the sampling pump 20 forms a passage with the first Cambridge filter 7 and the first activated carbon filter device 8, and start the air pumping; after the air pumping lasts for 4 seconds, the device returns to the initial state and waits for the next cycle. The end of the suction refers to the end of the suction action, and specifically for the ISO standard suction mode, it refers to the end of the continuous suction of 2 seconds.

[0051] After smoking 5 cigarettes, wash the electrostatic collection tube with 20 mL of methanol to obtain a methanol solution of nicotine in the particle phase, take a certain amount of it into a chromatographic bottle, add quinoline-methanol internal standard solution into it, and seal it for testing. At the same time, take a certain amount of methanol of gaseous nicotine in the absorption bottle into a chromatographic bottle, add quinoline-methanol internal standard solution into it, and seal it for testing.

[0052] Example 3

[0053] The method for capturing nicotine in smoke of this embodiment adopts the following steps:

[0054] The ISO standard smoking mode is adopted: one puff is taken every 60 seconds, the puff volume is 35 mL, and the puff duration is 2 seconds; 5 GS-1 cigarettes are smoked, and the smoke aerosol particle phase nicotine and gas phase nicotine are captured by the electrostatic collector 13 and the absorption bottle 14 respectively. The specific capture method is the same as that in Example 2.

[0055] In other implementations, the absorption bottle can be placed in a cold trap composed of dry ice / isopropyl alcohol to improve the capture efficiency of gas-phase nicotine.

[0056] 3. Comparison

[0057] Comparative Example 1

[0058] The method for capturing nicotine in smoke of this comparative example is substantially the same as that of Example 2, except that no air extraction auxiliary pipeline is used for air extraction.

[0059] Comparative Example 2

[0060] The method for capturing nicotine in smoke of this comparative example is substantially the same as that of Example 3, except that no air extraction auxiliary pipeline is used for air extraction.

[0061] IV. Experimental Examples

[0062] This experimental example is to determine the gas phase nicotine and particle phase nicotine content obtained by the nicotine capture method in the smoke of Examples 2 and 3 and Comparative Examples 1 and 2. The results of Example 2 and Comparative Example 1 are shown in Tables 1 and 2, and the results of Example 3 and Comparative Example 2 are shown in Tables 3 and 4

[0063] Determination method: The gas phase nicotine and particle phase nicotine samples obtained in Examples 2 and 3 and Comparative Examples 1 and 2 were analyzed and detected by GC-MS, respectively, using an FID detector, a chromatographic column of DB-5MS (30mX0.25μmx0.25), a carrier gas of helium, a flow rate of 6mL / min; an injection volume of 10μL; a column temperature of 50°C; a heating program of 70°C for 1min, 10°C / min to 250°C, and 1min. The ion source of the mass spectrometer was an electrospray ion source (ESI), the ionization mode was positive ion, the scanning mode was selective ion scanning (SIM), and the mass spectrometer molecular ion peaks were: nicotine (m / z84, m / z133, m / z 162) and quinoline (m / z102, m / z129); the ion source temperature was 230°C; the MS quadrupole temperature was 180°C; and the carrier gas was high-purity helium.

[0064] Table 1 Nicotine distribution results of Example 2

[0065]

[0066] Table 2 Nicotine distribution results of Comparative Example 1

[0067]

[0068] As shown in Tables 1 and 2, the average gas-phase nicotine release after smoking 5 reference cigarettes in Example 2 is 4.60 μg / cig, and the average particle-phase nicotine release is 1038.24 μg / cig; while the average gas-phase nicotine release after smoking 5 reference cigarettes in Comparative Example 1 without air extraction is 2.60 μg / cig, and the average particle-phase nicotine release is 1040.14 μg / cig. It can be seen that after air extraction, the capture amount of gas-phase nicotine is greatly increased, and the capture amount of particle-phase nicotine is reduced to a certain extent, avoiding the conversion of particle-phase nicotine to gas-phase nicotine in the smoke extraction pipeline, and the total nicotine capture amount after air extraction is higher than that without air extraction, indicating that the deposition of nicotine is avoided. Therefore, air extraction can better assist the capture of nicotine in smoke, truly reflect the distribution of gas-phase and particle-phase nicotine, and improve the accuracy of detection.

[0069] Table 3 Nicotine distribution results of Example 3

[0070]

[0071] Table 4 Nicotine distribution results of Comparative Example 2

[0072]

[0073] As shown in Tables 3 and 4, the average gas-phase nicotine release after smoking 5 GS-1 cigarettes in Example 3 is 4.35 μg / cig, and the average particle-phase nicotine release is 1027.14 μg / cig; while the average gas-phase nicotine release after smoking 5 GS-1 cigarettes in Comparative Example 2 without air extraction is 2.23 μg / cig, and the average particle-phase nicotine release is 1029.38 μg / cig. The nicotine distribution results are basically consistent with Tables 1 and 2, further indicating that the method of the present invention improves the accuracy of nicotine capture and more truly reflects the distribution of nicotine gas phase and particle phase.

Claims

1. A method for capturing nicotine in flue gas, characterized in that: The following steps are involved: The cigarette to be tested is puffed one by one through the smoking machine's suction pipeline, and the smoke generated by each puff flows through the particle phase nicotine capture module and the absorption solvent module in sequence to achieve independent capture of particle phase nicotine and gas phase nicotine; after each puff, the smoking machine's suction pipeline is switched to suction air, and the air is used to make the smoke remaining in the smoking machine's suction pipeline flow through the particle phase nicotine capture module and the absorption solvent module again until the smoking of the cigarette to be tested is completed.

2. The method for capturing nicotine in smoke according to claim 1, characterized in that: The sucked air is the purified air sucked to assist in capturing the particle phase nicotine and the gas phase nicotine.

3. The method for capturing nicotine in smoke according to claim 2, characterized in that: The purification is performed by filtering with Cambridge filter disc and activated carbon in sequence.

4. The method for capturing nicotine in smoke according to any one of claims 1 to 3, characterized in that: The particle phase nicotine capture module is an electrostatic collector.

5. The method for capturing nicotine in smoke according to any one of claims 1 to 3, characterized in that: Air suction begins 4 to 6 seconds after each puff, and the duration of air suction is 4 to 6 seconds.

6. A device for capturing nicotine in smoke, comprising a smoke suction pipeline, the smoke suction pipeline comprising a first connecting pipeline connected between a cigarette holder and the smoke capturing device, and a second connecting pipeline connected between the smoke capturing device and a smoking unit of a smoking machine, characterized in that: It also includes an air extraction auxiliary pipeline, which includes an air inlet pipeline connected to the first connecting pipeline and an air outlet pipeline connected to the second connecting pipeline, and the outlet of the air outlet pipeline is connected to a sampling pump; the smoking machine sampling device also includes a control valve for controlling the alternate opening of the smoke suction pipeline and the air extraction auxiliary pipeline; the smoke capture device includes a particle phase nicotine capture module and an absorption solvent module that are sequentially connected along the smoke flow direction.

7. The device for capturing nicotine in smoke according to claim 6, characterized in that: A first control valve is arranged between the connection point of the air inlet pipeline, the first connecting pipeline and the cigarette holder, a second control valve is arranged on the air inlet pipeline, and a third control valve is arranged on the air outlet pipeline and the second connecting pipeline.

8. The device for capturing nicotine in smoke according to claim 6, characterized in that: The inlet of the air inlet pipeline is connected with an air purification device; the particle phase nicotine capture module is an electrostatic collector, and the solvent absorption module is an absorption bottle.

9. The device for capturing nicotine in smoke according to any one of claims 6 to 8, characterized in that: The air inlet pipeline, the air outlet pipeline and the second connecting pipeline are integrated in the air extraction auxiliary controller.

10. The device for capturing nicotine in smoke according to any one of claims 6 to 8, characterized in that: The device for capturing nicotine in smoke also includes an air extraction auxiliary branch connected to the air outflow pipeline, the air extraction auxiliary branch has an air inlet; a sampling pump normally open valve is arranged on the air extraction auxiliary branch, which is opened when smoke is inhaled and closed when the air extraction auxiliary pipeline is opened.

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