Pretreatment device for rapid comparison of heated cigarette smoke components

Abstract

The present invention relates to a pretreatment device for rapid comparison of smoke components in heated cigarettes. The pretreatment device comprises: a heating device, a connecting tube, a syringe and an absorption liquid; wherein the heating device is used to heat the end of the tobacco segment of the heated cigarette, one end of the connecting tube is connected to the filter end of the heated cigarette, and the other end is connected to the small hole of the syringe barrel. The absorption liquid is pre-filled in the syringe, and the pre-filled amount of the absorption liquid does not exceed 50% of the volume of the syringe barrel. The pretreatment device has a simple structure, readily available components, easy operation, no need for regular maintenance, and low device cost; the device can be used to quickly and easily capture some components in the heated cigarette, provide detection liquid for subsequent detection and analysis, so as to carry out subsequent horizontal comparison of components, and then quickly evaluate the quality stability or quality pass rate of the same batch of cigarettes, and can also provide guidance for the formulation research of heated cigarettes.

Description

Technical Field

[0001] The present invention relates to the technical field of smoke analysis, and in particular to a pretreatment device for rapid comparison of smoke components of heated cigarettes. Background Art

[0002] Cigarette smoke has a significant impact on cigarette quality. Strengthening cigarette smoke analysis is not only important for analyzing cigarette quality, but also for guiding cigarette process formulation, processing, and the development of new products. Currently, the most commonly used cigarette smoke analysis method mainly uses a smoking machine to quantitatively draw cigarettes, uses Cambridge filters to separate particulate matter and water vapor, then collects the gas phase through an absorbent liquid or a trap, and finally conducts qualitative and quantitative analysis of the analytical solution. The structure of this type of detection device is mostly complex. To ensure the normal operation of the smoking machine, a Cambridge filter must be installed to filter out substances such as water vapor in the smoke, resulting in high equipment costs; long testing times; and regular maintenance and repair of the smoking machine are required. For tests that require rapid determination of the stability of a certain indicator of the same batch of cigarettes, the use of existing detection devices is not only costly but also difficult to meet the needs of rapid measurement. Summary of the Invention

[0003] In order to solve or partially solve the problems existing in the related art, the present invention provides a pretreatment device for rapid comparison of smoke components of heated cigarettes and a rapid comparison method for smoke components of heated cigarettes.

[0004] The present invention provides a pretreatment device for rapid comparison of smoke components in heated cigarettes, comprising: a heating device, a connecting tube, a syringe, and an absorption liquid; wherein the heating device is used to heat the end of a tobacco segment of the heated cigarette, one end of the connecting tube is connected to the filter end of the heated cigarette, and the other end is connected to the small hole of the syringe barrel of the syringe, and the absorption liquid is pre-filled in the syringe, and the pre-filled amount of the absorption liquid does not exceed 50% of the inner volume of the syringe barrel.

[0005] Furthermore, the connecting pipe is a connecting hose.

[0006] Furthermore, the connecting tube includes: a connecting tube head section and a connecting hose; one end of the connecting tube head section is a conical tube section with a gradually decreasing opening size, which is used to place the filter end of the heated cigarette; the other end of the connecting tube head section is connected to one end of the connecting hose, and the other end of the connecting hose is connected to the small hole of the syringe barrel.

[0007] Furthermore, it also includes: an auxiliary sealing cylinder, which is sleeved outside the small hole of the syringe and is provided with a one-way valve that only allows gas to flow into the syringe; the other end of the connecting tube is connected to the auxiliary sealing cylinder.

[0008] Furthermore, the one-way valve comprises: an annular protrusion and a circular sealing sheet; wherein,

[0009] The annular protrusion is provided on the inner wall of the auxiliary sealing cylinder;

[0010] The edge of the circular sealing sheet is fixed to one side of the annular protrusion close to the syringe, and a cross-shaped incision is provided in the middle thereof.

[0011] Furthermore, it also includes:

[0012] A first support, used for supporting and fixing the heating device;

[0013] A second support is used to support and fix the syringe;

[0014] The telescopic mechanism has a telescopic end which is detachably connected to the end of the piston handle of the syringe.

[0015] Furthermore, the second support includes: a bracket, a fixing clamp, and an automatic rotation component; wherein,

[0016] The fixed clamping ring is sleeved on the outside of the syringe barrel;

[0017] The automatic rotating assembly is fixed on the bracket and includes: a power input end, an input gear and a vortex spring gear that are meshed with each other; the gear shaft of the vortex spring gear is connected to a fixed snap ring; the power input end is used to drive the input gear to rotate.

[0018] Furthermore, the absorption liquid is used to absorb water-soluble components, alcohol-soluble components or ester-soluble components in the flue gas.

[0019] The present invention also provides a method for quickly comparing components of heated cigarette smoke, comprising the following steps:

[0020] Using any of the above-mentioned pretreatment devices, multiple groups of heated cigarettes to be tested are treated according to the following method:

[0021] a) Using the syringe to absorb a preset amount of absorption liquid, record the initial position of the syringe piston at this time;

[0022] b) Place the heated cigarette to be tested into the heating device and connect its filter end to the connecting tube;

[0023] c) Turn on the heating device to heat the test cigarette for 30 to 60 seconds, pull the syringe piston to inhale, and stop when the syringe reaches its maximum capacity;

[0024] d). Shake the syringe;

[0025] e) Pull the connecting tube out of the syringe barrel and push the syringe piston back to its initial position;

[0026] f) Take another heated cigarette from the same group and repeat steps b to e several times; remove the liquid in the syringe to obtain the test solution;

[0027] The test liquid corresponding to each group of test cigarettes was analyzed by GC-MS, and the smoke components of different test cigarettes were compared based on the analysis results.

[0028] Furthermore, the multiple groups of heated cigarettes to be tested are two or more groups of heated cigarettes of the same specification and the same leaf group; or, the multiple groups of heated cigarettes to be tested are one group of standard heated cigarettes and one or more groups of heated cigarettes for comparison.

[0029] Compared with the prior art, the pretreatment device for rapid comparison of heated cigarette smoke components provided by the present invention has the following advantages:

[0030] The pretreatment device has a simple structure, readily available components, and is easy to operate. Using the device, some components in heated cigarettes can be quickly and easily captured, providing a test solution for subsequent testing and analysis, allowing for subsequent horizontal comparison of components, and thus quickly evaluating the quality stability or quality pass rate of the same batch of cigarettes. It can also provide guidance for research on the formulation of heated cigarettes.

[0031] The syringe integrates a quantitative smoking device, an absorption liquid holding device, and a gas-liquid mixing device. It does not require a Cambridge filter like a smoking machine, nor does it require regular maintenance. It simplifies the structure and reduces the cost of the device.

[0032] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0034] Figure 1 A schematic diagram of the structure of a pre-processing device for rapid comparison of smoke components of heated cigarettes provided by an embodiment of the present invention;

[0035] Figure 2 A schematic structural diagram of a pre-processing device for rapid comparison of smoke components of heated cigarettes provided by another embodiment of the present invention;

[0036] Figure 3 A schematic structural diagram of a pre-processing device for rapid comparison of smoke components of heated cigarettes provided by another embodiment of the present invention;

[0037] Figure 4A schematic diagram of the end structure of an auxiliary sealing cylinder in a pretreatment device for rapid comparison of smoke components of heated cigarettes provided by another embodiment of the present invention;

[0038] Figure 5 A schematic structural diagram of a pre-processing device for rapid comparison of smoke components of heated cigarettes provided by another embodiment of the present invention;

[0039] Figure 6 This is a schematic structural diagram of the second bracket in a pretreatment device for rapid comparison of heated cigarette smoke components provided by another embodiment.

[0040] Description of reference numerals:

[0041] 1- Heated cigarettes

[0042] 2-Heating appliances

[0043] 3-Connecting pipe

[0044] 31-Connecting pipe head section

[0045] 32-Connecting hose

[0046] 4-Syringe

[0047] 5-Absorption liquid

[0048] 6-Auxiliary sealing cylinder

[0049] 7-One-way valve

[0050] 71-annular protrusion

[0051] 72-round sealing piece

[0052] 8-First support

[0053] 91-Stand

[0054] 92-Fixed snap ring

[0055] 93-Automatic rotation component

[0056] 931-Power input terminal

[0057] 932-Input gear

[0058] 933-Vortex Spring Gear

[0059] 10-Telescopic mechanism DETAILED DESCRIPTION

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0061] The terms used in this invention are for the purpose of describing specific embodiments only and are not intended to limit the invention. The singular forms "a," "the," and "the" used in this invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0062] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0063] An embodiment of the present invention provides a pretreatment device for rapid comparison of heated cigarette smoke components. This device can quickly and easily capture some components in heated cigarettes, provide a test liquid for subsequent detection and analysis, and facilitate subsequent horizontal comparison of components, thereby quickly evaluating the quality stability or quality pass rate of the same batch of cigarettes. It can also provide guidance for the formulation research of heated cigarettes.

[0064] See Figure 1 The pretreatment device for rapid comparison of heated cigarette smoke components provided by an embodiment of the present invention includes: a heating device 2, a connecting tube 3, a syringe 4 and an absorption liquid 5; wherein the heating device 2 is used to heat the end of the tobacco segment of the heated cigarette 1, one end of the connecting tube 3 is connected to the filter end of the heated cigarette 1, and the other end is connected to the small hole of the syringe 4. The syringe 4 is pre-filled with the absorption liquid 5, and the pre-filled amount of the absorption liquid 5 does not exceed 50% of the internal volume of the syringe 4.

[0065] In the pretreatment device described above, the heating device 2 is used to heat the heated cigarette 1 to generate smoke, and the connecting tube 3 connects to the filter end of the heated cigarette 1 to direct the smoke into the barrel of the syringe 4. The syringe 4 functions as follows: first, by pulling the piston handle outward, negative pressure is used to absorb the smoke generated by the heated cigarette. The amount of smoke absorbed is quantitatively controlled by the stroke of the piston handle, thus functioning similarly to a smoking machine, but without the need for a Cambridge filter or regular maintenance. Second, the syringe is also used to hold an absorption liquid 5, which is used to absorb specific components in the smoke. Those skilled in the art can determine the appropriate absorption liquid based on the target smoke components to be detected. The absorption liquid is used to absorb water-soluble components, alcohol-soluble components, or ester-soluble components in the smoke. Specifically, the absorption liquid can be water, which absorbs water-soluble components in the smoke; methanol or ethanol, which absorb alcohol-soluble components in the smoke; or isopentyl isovalerate or dipropylene glycol methyl ether, which absorb ester-soluble components in the smoke. Finally, the barrel of the syringe 4 also provides space for gas-liquid mixing, allowing the components to be detected in the flue gas to be fully absorbed by the absorption liquid 5. To ensure the amount of components to be detected in the flue gas in a single treatment and to provide space for the flue gas and absorption liquid to mix evenly, the embodiment of the present invention controls the preset amount of absorption liquid 5 to not exceed 50% of the internal volume of the syringe 4 barrel.

[0066] The specifications of the above syringe can be 10mL, 30mL or 50mL syringes, and the preset amount of absorption liquid in the syringe is 6% to 20% of the inner volume of the syringe barrel.

[0067] The method for quickly capturing flue gas components using the pretreatment device is as follows:

[0068] Multiple groups of heated cigarettes to be tested were processed according to the following method:

[0069] a) Use the syringe 4 to absorb a preset amount of absorption liquid 5 and record the initial position of the syringe piston at this time;

[0070] b) Place the heated cigarette 1 to be tested into the heating device 2 and connect its filter end to the connecting tube 3;

[0071] c) Turn on the heating device 2 to heat the heated cigarette to be tested for 30 to 60 seconds, pull the syringe piston to inhale, and stop when the maximum capacity of the syringe 4 is reached;

[0072] d). Shake the syringe 4;

[0073] e) Pull out the connecting tube 3 from the syringe 4 and push the syringe piston back to its initial position;

[0074] f) Take another heated cigarette from the same group and repeat steps b to e several times; remove the liquid in the syringe 4 to obtain the test liquid;

[0075] Thus, the test liquid corresponding to each group of test cigarettes is obtained, and the multiple groups are at least two groups. Then, the test liquid corresponding to each group of heated cigarettes can be subjected to GC-MS analysis, and the smoke components of different test heated cigarettes can be compared according to the analysis results. This can quickly achieve a horizontal comparison of the components between the heated cigarettes, and then judge the quality stability of the batch of cigarettes, or be used to measure the qualified rate of the batch of cigarettes. For example: when it is necessary to quickly judge the quality stability of a batch of heated cigarettes, the last multiple groups of test cigarettes can be more than two groups of heated cigarettes of the same specifications and the same leaf group, which are pre-treated and analyzed using the method of the embodiment of the present invention, and the quality stability of the batch of cigarettes can be judged by the deviation of the horizontal comparison of certain key components such as nicotine, triacetin, propylene glycol, and glycerol. For another example, when it is necessary to quickly assess the pass rate of a batch of heated cigarettes, the multiple groups of test cigarettes include a group of standard heated cigarettes and one or more groups of comparative heated cigarettes. The test cigarettes are pre-treated and analyzed using the method of an embodiment of the present invention, and the pass rate of the batch of cigarettes is estimated by comparing the deviations of certain key components such as propylene glycol and nicotine in a horizontal manner.

[0076] In the above-mentioned pretreatment device, the connecting tube 3 is used to guide the smoke into the syringe 4. In order to facilitate the adjustment of the arrangement position of the heating device 2 and the syringe 4, the connecting tube 3 is preferably a connecting hose, such as a rubber hose. As another preferred embodiment of the present invention, see Figure 2 The connecting tube 3 comprises a connecting tube head section 31 and a connecting hose 32. One end of the connecting tube head section 31 is a tapered tube section with a gradually decreasing opening size, which is used to accommodate the filter end of the heated cigarette 1. The other end of the connecting tube head section 31 is connected to one end of the connecting hose 32, and the other end of the connecting hose 32 is connected to the syringe 4's syringe barrel orifice. The connecting tube 3 adopts a two-stage assembly structure. The function of the connecting hose 32 is the same as described above. This solution also adds a connecting tube head section 31 with a tapered tube structure. Due to the provision of a tapered tube section with a gradually decreasing size, it is suitable for heated cigarettes of various sizes and specifications, broadening the scope of application of the pretreatment device. The connecting tube head section 31 is preferably made of metal, such as stainless steel. One end of the connecting hose 32 is sleeved onto the end of the connecting tube head section 31 (i.e., the aforementioned other end), and the other end is connected to the syringe 4's syringe barrel orifice.

[0077] After the puff is complete, the syringe 4 needs to be shaken. This step increases the contact area between the smoke and the absorption liquid 5, thereby improving the absorption rate of the component to be measured. To reduce smoke leakage during this process, the syringe 4's small bore is preferably sealed before shaking. Specific implementations include, but are not limited to, for structures where the connecting tube 3 is a connecting hose, the heated cigarette 1 can be removed from the connecting hose and then sealed with a sealing clamp. Alternatively, after removing the connecting tube 3, the syringe bore can be sealed with a sealing cap.

[0078] See Figure 3 In order to improve the detection efficiency, another preferred embodiment of the present invention preferably adopts the following technical solution. The above-mentioned pretreatment device also includes: an auxiliary sealing cylinder 6, which is sleeved outside the small hole of the syringe 4. The auxiliary sealing cylinder 6 is provided with a one-way valve 7 that only allows gas to flow into the syringe; the other end of the connecting tube 3 is connected to the auxiliary sealing cylinder 6. Therefore, when the suction operation is performed, the connecting tube 3 is connected to the syringe 4 through the auxiliary sealing cylinder 6. When the piston of the syringe 4 is pulled outward, the one-way valve 7 is in the open state, allowing smoke to enter the interior of the syringe; when the suction is completed, the connecting tube 3 is removed, and the one-way valve 7 is now in the closed state, preventing the gas in the syringe from leaking out.

[0079] See Figure 3 and Figure 4 , the specific structure of the one-way valve 7 may include: an annular protrusion 71 and a circular sealing piece 72; wherein,

[0080] The annular protrusion 71 is provided on the inner wall of the auxiliary sealing cylinder 6;

[0081] The edge of the circular sealing piece 72 is fixed to the side of the annular protrusion 71 close to the syringe, and a cross-shaped cutout is provided in the middle of the circular sealing piece 72 .

[0082] A circular sealing sheet 72 with a cross-shaped cutout is provided in the middle portion, and its edges are fixed on the annular protrusion 71. When the piston handle of the syringe 4 is pulled outward, the cross-shaped cutout of the circular sealing sheet 72 will open inward due to the effect of negative pressure, allowing smoke to enter; when the piston handle of the syringe 4 stops being pulled outward, the circular sealing sheet 72 loses the negative pressure effect, the cross-shaped cutout returns to its original position, and the smoke is isolated in the syringe barrel 4.

[0083] As a preferred embodiment of the present invention, see Figure 5 , the above-mentioned pretreatment device preferably further comprises:

[0084] A first support 8 is used to support and fix the heating device 2; preferably, the heating device 2 is fixed to the first support 8 in a horizontal direction;

[0085] A second support, used to support and fix the syringe 4; preferably, the syringe 4 is fixed to the second support in a horizontal direction or a vertical direction;

[0086] The telescopic mechanism 10 has a telescopic end detachably connected to the end of the piston handle of the syringe 4. The telescopic mechanism 10 is used to automatically control the travel of the piston rod of the syringe 4, thereby facilitating the consistency of the smoke intake. The telescopic mechanism 10 can be specifically a cylinder.

[0087] Further, see Figure 6 The second support may specifically include: a bracket 91, a fixing ring 92, and an automatic rotation component 93; wherein,

[0088] The fixed clamp ring 92 is sleeved on the outside of the syringe barrel 4;

[0089] The automatic rotation component 93 is fixed on the bracket 91, and includes: a power input end 931, an input gear 932 and a vortex spring gear 933 that are meshed with each other; the gear shaft of the vortex spring gear 933 is connected to the fixed retaining ring 92; the power input end 931 is used to drive the input gear 932 to rotate.

[0090] The provision of the automatic rotating assembly 93 facilitates the shaking of the syringe 4 after aspiration. Simply drive the input gear 932 through the power input terminal 931. Through meshing, the vortex spring gear 933 rotates accordingly, tightening the vortex spring during rotation. When the power source to the power input terminal 931 is removed, the vortex spring resets, driving the vortex spring gear 933 in reverse rotation. The rotating spring gear also rotates the fixed retaining ring 92 and the syringe 4, thereby achieving the shaking of the syringe 4. By controlling the power source of the power input terminal 931, the shaking conditions can be identical when testing different groups of cigarettes, thereby facilitating consistent control of testing conditions.

[0091] As can be seen from the above, the pretreatment device for rapid comparison of heated cigarette smoke components provided by the embodiments of the present invention has the following advantages:

[0092] The pretreatment device has a simple structure, readily available components, and is easy to operate. Using the device, some components in heated cigarettes can be quickly and easily captured, providing a test solution for subsequent testing and analysis, allowing for subsequent horizontal comparison of components, and thus quickly evaluating the quality stability or quality pass rate of the same batch of cigarettes. It can also provide guidance for research on the formulation of heated cigarettes.

[0093] The syringe integrates a quantitative smoking device, an absorption liquid holding device, and a gas-liquid mixing device. It does not require a Cambridge filter like a smoking machine, nor does it require regular maintenance. It simplifies the structure and reduces the cost of the device.

[0094] Another embodiment of the present invention further provides a method for quickly comparing components of heated cigarette smoke, comprising the following steps:

[0095] The pretreatment device provided in the above embodiment is used to treat multiple groups of heated cigarettes to be tested according to the following method, wherein the multiple groups are at least two groups:

[0096] a) Using the syringe 4 to absorb a preset amount of absorption liquid, record the initial position of the syringe piston 4 at this time;

[0097] b) Place the heated cigarette to be tested into the heating device 2 and connect its filter end to the connecting tube 3;

[0098] c) Turn on the heating device 2 to heat the test cigarette for 30 to 60 seconds, pull the piston of the syringe 4 to inhale, and stop when the maximum capacity of the syringe 4 is reached;

[0099] d). Shake the syringe 4;

[0100] e) Pull out the connecting tube 3 from the syringe barrel 4 and push back the syringe piston 4 to its initial position;

[0101] f) Take another heated cigarette from the same group and repeat steps b to e several times; remove the liquid in the syringe 4 to obtain the test liquid;

[0102] The test liquid corresponding to each group of test cigarettes was analyzed by GC-MS, and the smoke components of different test cigarettes were compared based on the analysis results.

[0103] Preferably, the multiple groups of heated cigarettes to be tested are two or more groups of heated cigarettes of the same specifications and leaf group; alternatively, the multiple groups of heated cigarettes to be tested are one group of standard heated cigarettes and one or more groups of comparative heated cigarettes. The former method is used to quickly determine the quality stability of a batch of cigarettes, while the latter method is used to quickly measure the qualified rate of a batch of cigarettes.

[0104] The present invention will be further described below with reference to specific embodiments.

[0105] Example 1:

[0106] The heated cigarettes of the same specifications to be tested were randomly divided into three groups, each group containing 5 cigarettes. The three groups of test cigarettes were labeled A, B, and C respectively. Each group of cigarettes was tested as follows:

[0107] Use Figure 1 The pre-treatment device shown processes each group of heated cigarettes in the following manner:

[0108] Use a 10mL syringe to absorb 2mL of ethanol solution; connect the filter end of the heated cigarette to the syringe using a connecting hose; heat the heated cigarette for 30 seconds, push the syringe piston to inhale, and stop when the syringe reaches its maximum capacity; shake the syringe for 30 seconds to allow the ethanol in the syringe to fully absorb the smoke; pull out the syringe, push the piston back to the 2mL scale, and connect it to another heated cigarette in the same group; repeat the above steps until all five heated cigarettes in this group have been inhaled; pull out the syringe, inject the absorption solution into the chromatographic bottle, and perform GC-MS analysis. The GC-MS analysis conditions were as follows: the chromatographic column was KB-WAXetr (60 m × 250 μm × 0.25 μm); the carrier gas was He; the flow rate was 1 mL / min: the injection volume was 1 μL, the split ratio was 10:1, the temperature program was 50°C for 2 min, then the temperature was increased at 5°C / min to 100°C and held for 5 min, the temperature was increased at 3°C / min to 125°C and held for 10 min, the temperature was increased at 3°C / min to 150°C and held for 10 min, the temperature was increased at 3°C / min to 175°C and held for 10 min, the temperature was increased at 3°C / min to 200°C and held for 10 min, the temperature was increased at 3°C / min to 225°C and held for 10 min, and the temperature was increased at 3°C / min to 260°C and held for 10 min; the transfer line temperature was 260°C; the ion source temperature was 230°C; the solvent delay was 7.2 min; the mass number range was 33–550 amu. The GC-MS analysis results are listed in Table 1.

[0109] Table 1 Normalized results of smoke components and area of ​​each group of heated cigarettes

[0110]

[0111] As can be seen from Table 1, this batch of cigarettes has good stability.

[0112] Example 2

[0113] Prepare standard cigarette group O in advance

[0114] Randomly select 5 cigarettes of the same specification to be tested to obtain the test group cigarettes L;

[0115] Each group of cigarettes was tested as follows:

[0116] Use Figure 1 The pre-treatment device shown processes the heated cigarettes of the test group L in the following manner:

[0117] Use a 50mL syringe to absorb 3mL of dipropylene glycol methyl ether; connect the filter end of the heated cigarette to the syringe using a connecting hose; heat the heated cigarette for 40s, push the syringe piston to inhale, and stop when the syringe reaches its maximum capacity; shake the syringe for 40s to allow the dipropylene glycol methyl ether in the syringe to fully absorb the smoke; pull out the syringe, push the piston back to the 3mL mark, and connect it to another heated cigarette; repeat the above steps until all 5 heated cigarettes in this group have been inhaled; pull out the syringe, inject the solution into the chromatographic bottle, and perform GC-MS analysis. The GC-MS analysis conditions are as follows: the chromatographic column is KB-WAXetr (60m×250μm×0.25μm); the carrier gas is He; the flow rate is 1 mL / min: injection volume 1 μL, split ratio 10:1, temperature program: 50°C for 2 min, then 5°C / min to 100°C, hold for 5 min, 3°C / min to 125°C, hold for 10 min, 3°C / min to 150°C, hold for 10 min, 3°C / min to 175°C, hold for 10 min, 3°C / min to 200°C, hold for 10 min, 3°C / min to 225°C, hold for 10 min, 3°C / min to 260°C, hold for 10 min; transfer line temperature 260°C; ion source temperature 230°C; solvent delay 7.2 min; mass range 33-550 amu. GC-MS analysis results are listed in Table 2:

[0118] Table 2 Normalized results of smoke components and area of ​​each group of heated cigarettes

[0119] serial number Retention time Area normalization (%) Compound name O 5.68 0.02 Isovaleraldehyde L 5.67 0.02 Isovaleraldehyde O 5.81 0.02 Hydroxyacetone L 5.81 0.02 Hydroxyacetone O 5.95,6.10,9.26 3.97 Propylene glycol methyl ether L 5.94,6.09,9.30 3.99 Propylene glycol methyl ether O 6.36 2.01 2-Methoxy-1-propanol L 6.41 1.98 2-Methoxy-1-propanol O 6.90,7.73,7.92,9.09,10.46 84.78 Propylene glycol L 6.91,7.73,7.98,9.11,10.46 84.79 Propylene glycol O 7.37 0.22 1-Ethoxy-2-propanol L 7.34 0.21 1-Ethoxy-2-propanol O 14.25 0.13 Tripropylene glycol methyl ether L 14.26 0.14 Tripropylene glycol methyl ether O 18.40 1.36 n-Tridecane L 18.5 1.4 n-Tridecane O 18.88 1.93 1,2-Glycerol diacetate L 18.8 1.85 1,2-Glycerol diacetate O 19.50 5.56 Nicotine L 19.45 5.6 Nicotine

[0120] As can be seen from Table 2, the cigarettes in the test group meet the standards.

[0121] While various embodiments of the present invention have been described above, the above descriptions are intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A pre-processing device for rapid comparison of smoke components of heated cigarettes, characterized in that: include: A heating device, a connecting tube, an auxiliary sealing cylinder, a syringe and an absorption liquid; wherein the heating device is used to heat the end of the tobacco segment of the heated cigarette; The connecting pipe includes a connecting pipe head section and a connecting hose; one end of the connecting pipe head section is a tapered pipe section with a gradually decreasing opening size, which is used to place the filter end of the heated cigarette; the other end of the connecting pipe head section is connected to one end of the connecting hose, and the other end of the connecting pipe is connected to the auxiliary sealing cylinder; The auxiliary sealing cylinder is sleeved outside the small hole of the syringe, and a one-way valve is provided in the auxiliary sealing cylinder to only allow gas to flow into the syringe; The syringe is pre-filled with the absorption liquid, and the pre-filled amount of the absorption liquid does not exceed 50% of the volume of the syringe barrel; The second support for supporting and fixing the syringe includes: a bracket, a fixing clamp ring, and an automatic rotation component; wherein, The fixed clamping ring is sleeved on the outside of the syringe barrel; The automatic rotating assembly is fixed on the bracket and includes: a power input end, an input gear and a vortex spring gear that are meshed with each other; the gear shaft of the vortex spring gear is connected to a fixed snap ring; the power input end is used to drive the input gear to rotate.

2. The pretreatment device for rapid comparison of heated cigarette smoke components according to claim 1, characterized in that: The one-way valve comprises: an annular protrusion and a circular sealing sheet; wherein, The annular protrusion is provided on the inner wall of the auxiliary sealing cylinder; The edge of the circular sealing sheet is fixed to one side of the annular protrusion close to the syringe, and a cross-shaped incision is provided in the middle thereof.

3. The pre-processing device for rapid comparison of heated cigarette smoke components according to claim 1, characterized in that: Also includes: A first support, used for supporting and fixing the heating device; The telescopic mechanism has a telescopic end which is detachably connected to the end of the piston handle of the syringe.

4. The pretreatment device for rapid comparison of smoke components of heated cigarettes according to claim 1, characterized in that: The absorption liquid is used to absorb water-soluble components, alcohol-soluble components or ester-soluble components in the flue gas.

5. A method for quickly comparing components of heated cigarette smoke, using the pretreatment device for quickly comparing components of heated cigarette smoke according to any one of claims 1 to 4, characterized in that: Multiple groups of heated cigarettes to be tested are processed according to the following steps: a) using the syringe to absorb a preset amount of absorption liquid, record the initial position of the syringe piston at this time; b) Place the heated cigarette to be tested into the heating device and connect its filter end to the connecting tube; c) Turn on the heating device to heat the test cigarette for 30 to 60 seconds, pull the syringe plunger to inhale, and stop when the syringe reaches its maximum capacity; d). Shake the syringe; e) Pull the connecting tube out of the syringe barrel and push the syringe piston back to its initial position; f) Take another heated cigarette from the same group and repeat steps b) to e) several times; remove the liquid from the syringe to obtain the test solution; The test liquid corresponding to each group of test cigarettes was analyzed by GC-MS, and the smoke components of different test cigarettes were compared based on the analysis results.

6. The rapid comparison method according to claim 5, characterized in that: The multiple groups of heated cigarettes to be tested are two or more groups of heated cigarettes of the same specification and the same leaf group; or, the multiple groups of heated cigarettes to be tested are one group of standard heated cigarettes and one or more groups of heated cigarettes for comparison.

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