Puff-by-puff analysis device and method for content of carbon monoxide in cigarette sidestream smoke

Abstract

The invention relates to the technical field of cigarette manufacturing, and discloses a puff-by-puff analysis device for the content of carbon monoxide in side-stream smoke of cigarettes, which comprises a side-stream smoke trapping and storing unit comprising a fishtail cover for collecting the side-stream smoke, a sampling pump for providing suction power for the side-stream smoke, and an air bag for storing the collected side-stream smoke; the gas phase substance analysis unit comprises a carbon monoxide analyzer for carrying out carbon monoxide concentration analysis on the flue gas sample, and a vacuum pump for pumping out gas in the gas bag and conveying the gas to the carbon monoxide analyzer; and the smoking simulation unit comprises a cigarette holder for fixing a cigarette and a smoking power source for simulating smoking of the cigarette in the cigarette holder. The device realizes active and complete trapping and targeted analysis of sidestream smoke, and overcomes the defect of dependence on environmental diffusion or manual operation in the prior art. Therefore, a reliable hardware foundation is laid for follow-up accurate puff-by-puff release rule analysis.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cigarette manufacturing, in particular to a device and method for analyzing carbon monoxide content in cigarette sidestream smoke puff by puff. BACKGROUND

[0002] Carbon monoxide is an important harmful component in cigarette smoke, mainly produced by thermal cracking and combustion reaction of cigarette tobacco components. Because carbon monoxide is easily combined with hemoglobin, it hinders oxygen transport, affects the brain and myocardium, causes tissue hypoxia, and produces poisoning symptoms. Therefore, carbon monoxide has been listed as one of the seven harmful components of cigarette safety. Compared with mainstream smoke, sidestream smoke has a lower combustion temperature and insufficient oxidation reaction, resulting in a relatively higher concentration of harmful components such as carbon monoxide. With the increasing attention to passive smoking in recent years, the release rule of carbon monoxide in cigarette sidestream smoke has become the focus of current tobacco industry research.

[0003] The release of sidestream smoke is a dynamic process, and only by analyzing the carbon monoxide content in sidestream smoke puff by puff can the release rule be clarified. Therefore, how to effectively analyze the carbon monoxide content in sidestream smoke puff by puff has become a difficulty in current tobacco science and technology work. At present, the capture and measurement of carbon monoxide content in sidestream smoke in China are based on the implementation of national standard YC / T 349-2010 "Determination of Carbon Monoxide in Gas Phase of Cigarette Sidestream Smoke". Although this method plays an important guiding role, it cannot exclude the interference of the matrix, to some extent, resulting in a higher uncertainty in analysis and measurement, and the determination of sidestream smoke puff by puff carbon monoxide content is not explained in detail, which has certain limitations for exploring the release rule of sidestream smoke carbon monoxide. Therefore, it is necessary to develop and design an efficient and continuous sidestream smoke puff by puff carbon monoxide analysis device to provide a scientific basis for further clarifying the dynamic change rule of sidestream smoke carbon monoxide and objectively evaluating the impact of passive smoking on human health. SUMMARY

[0004] In view of the above deficiencies or shortcomings in the prior art, the present application aims to provide a device and method for capturing sidestream smoke puff by puff in cigarette sidestream smoke, to solve the technical problem that the prior art cannot analyze the release rule of carbon monoxide in cigarette sidestream smoke puff by puff, thereby resulting in an unclear dynamic release rule.

[0005] To achieve the above-mentioned purpose, the first aspect of the present application provides a device for analyzing carbon monoxide content in cigarette sidestream smoke puff by puff, comprising: a sidestream smoke capture and storage unit, including a fish tail cover for collecting sidestream smoke, a sampling pump for providing suction power for the sidestream smoke, and a gas bag for storing the collected sidestream smoke; A gas phase analysis unit comprising a carbon monoxide analyzer for analyzing the carbon monoxide concentration of the smoke sample, and a vacuum pump for extracting and transporting the gas in the gas bag to the carbon monoxide analyzer; A puff simulation unit comprising a cigarette holder for fixing a cigarette, and a puffing power source for simulating puffing of the cigarette in the cigarette holder.

[0006] The present application provides an integrated device that can be used for analyzing the carbon monoxide content of sidestream smoke by constructing a sidestream smoke capture and storage unit, a gas phase analysis unit, and a puff simulation unit. The device actively and completely captures and targets the analysis of sidestream smoke, overcoming the shortcomings of previous methods that rely on environmental diffusion or manual operation. Through the coordinated division of labor between the sampling pump and the vacuum pump, the former is responsible for actively collecting and storing smoke during the puffing process, and the latter is responsible for transporting the stored smoke to the analyzer during the analysis phase, fundamentally avoiding the technical problems of high measurement uncertainty caused by incomplete capture, sample transfer loss, or cross contamination in traditional methods, and laying a reliable hardware foundation for subsequent precise analysis of the release pattern of each puff.

[0007] In some embodiments, a gas bag inlet control valve is arranged on the gas inlet pipeline of the gas bag, and a gas bag outlet control valve is arranged on the gas outlet pipeline.

[0008] In some embodiments, the sidestream smoke capture and storage unit further comprises an absorption bottle, a filter, and a flow regulating valve; the absorption bottle, the filter, and the flow regulating valve are sequentially connected in series from upstream to downstream at the gas inlet end of the sampling pump.

[0009] In some embodiments, the sidestream smoke capture and storage unit further comprises a sidestream smoke filter collector for capturing particulate matter in sidestream smoke, which is connected in series in the gas path between the fish tail cover and the sampling pump.

[0010] In some embodiments, the puff simulation unit further comprises a three-way valve; the common end of the three-way valve is connected to the puffing power source, the normally closed end is connected to the cigarette holder, and the normally open end is in communication with the ambient atmosphere or an exhaust device.

[0011] In some embodiments, the puff simulation unit further comprises a mainstream smoke filter collector for capturing particulate matter in mainstream smoke, which is connected in series in the gas path between the cigarette holder and the normally closed end of the three-way valve.

[0012] The second aspect of the present application provides a method for analyzing the carbon monoxide content of sidestream smoke of a cigarette, comprising the following steps: Sample preparation step: divide the cigarette samples to be tested into m batches, where m is an integer greater than 1, and each batch contains n cigarettes, where n is an integer greater than or equal to 1; Batch capture and analysis step: sequentially test each batch of cigarettes; for the kth batch, control the device to perform k puffs on each cigarette in the batch and capture all the sidestream smoke generated by the batch; use the gas phase analysis unit to measure the total amount of carbon monoxide in the sidestream smoke of the batch, denoted as M k , where k = 1, 2,..., m; Puff-by-puff release amount calculation step: based on the total amount of carbon monoxide M k of each batch, calculate the puff-by-puff release amount of carbon monoxide in the sidestream smoke of the cigarette sample; where the release amount of the ith puff is calculated based on the difference between the total amount of carbon monoxide of the ith batch and the (i-1)th batch divided by the number of cigarettes n in each batch, i = 2, 3,..., m.

[0013] The method of the present application converts the measurement problem of a dynamic process into a calculation problem of a static total amount by a clever "mathematical difference" strategy. The method implements a "batch-by-batch, puff-by-puff" capture procedure, and subsequently performs a simple subtraction operation on the measurement results of adjacent batches, to accurately invert and calculate the puff-by-puff release amount that cannot be directly captured by traditional technical means. Without relying on complex and expensive multi-channel synchronous capture hardware systems, the present application only uses conventional experimental devices and rigorous mathematical logic to achieve high-precision analysis of the dynamic release law of carbon monoxide in sidestream smoke, greatly reducing the technical implementation threshold and cost, and providing effective protection for scientific research and product quality control.

[0014] In some embodiments, in the batch capture and analysis step, the analysis of the gas in the gas bag is performed according to the following steps: Control the vacuum pump to pump the sidestream smoke in the gas bag into the carbon monoxide analyzer at a first flow rate for analysis; After obtaining the carbon monoxide content result, control the vacuum pump to operate at a second flow rate greater than the first flow rate to pump out the residual gas in the gas bag, so that it is in a negative pressure state, preparing for subsequent tests.

[0015] In some embodiments, in the batch capture and analysis step, for each puff, the three-way valve performs the following operation steps: During the suction stroke of the suction power source, the three-way valve establishes gas path communication between the suction power source and the cigarette holder; During the exhaust stroke of the suction power source, the three-way valve establishes gas path communication between the suction power source and the atmosphere or exhaust device.

[0016] In some embodiments, in the batch-wise trapping and analyzing step, when switching cigarette samples within the same batch, the sampling pump keeps running continuously to ensure uninterrupted trapping of all sidestream smoke generated in the batch.

[0017] Other features and advantages of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of an embodiment of the present application for analyzing the carbon monoxide content in the sidestream smoke of a cigarette puff by puff; Figure 2 is a schematic diagram of an embodiment of the present application for analyzing the carbon monoxide content in the sidestream smoke of a cigarette puff by puff.

[0019] REFERENCE NUMERALS 1 puffing power source; 2 three-way valve; 3 mainstream smoke filter trap; 4 cigarette holder; 5 ashtray; 6 fish tail cover; 7 sidestream smoke filter trap; 8 absorption bottle; 9 filter; 10 flow regulating valve; 11 sampling pump; 12 gas bag inlet control valve; 13 gas bag; 14 gas bag outlet control valve; 15 vacuum pump; 16 carbon monoxide analyzer. DETAILED DESCRIPTION

[0020] The specific embodiments of the present application will be described in detail below. It should be understood that the detailed description and specific examples, while indicating preferred embodiments of the application, are given by way of illustration only, and are not by way of limitation.

[0021] In the present application, unless otherwise specified, the orientation words such as "upper" and "lower" generally refer to the orientation in the assembled and used state. "Inner" and "outer" refer to the inner and outer relative to the outline of each component itself.

[0022] It should be noted that the terms "first", "second", and so on in the description of the present application and claims and the above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] The first aspect of the present application provides a puff-by-puff analysis device for the carbon monoxide content in the sidestream smoke of a cigarette, as shown in Figure 1As shown, the device comprises a sidestream smoke capture storage unit, a gas phase substance analysis unit, and a puff simulation unit.

[0024] The sidestream smoke capture storage unit comprises a fume hood 6 for collecting sidestream smoke, a sampling pump 11 for providing suction power for the sidestream smoke, and a gas bag 13 for storing the collected sidestream smoke.

[0025] A cigarette ash tray 5 can be placed below the air inlet of the fume hood 6 to collect the ash falling from the burning cigarette. The area and shape of the cigarette ash tray 5 should be able to cover the area where the ash is likely to fall.

[0026] In an alternative embodiment, the fume hood 6 is vertically arranged, with a wide-mouthed air inlet at the bottom for collecting sidestream smoke, and a narrow-mouthed air outlet at the top for connecting the subsequent gas path. An opening is provided on the sidewall of the fume hood 6 near the air inlet for the cigarette to extend into the internal cavity of the fume hood 6. The material and size of the fume hood 6 are processed according to the relevant provisions in the standard YC / T 185-2004.

[0027] The sampling pump 11 provides suction power for the sidestream smoke. An adjustable diaphragm air pump can be selected. The sampling pump 11 also includes a pump controller and a real-time flow indicator. The pump controller is used to control the suction flow of the air pump, which in this embodiment can be adjusted in the range of 0-6 L / min. The real-time flow indicator monitors the actual flow of the sidestream smoke in the air pipe.

[0028] The suction flow of the diaphragm air pump is set to a value slightly higher than the predetermined suction flow rate by the pump controller, and then fine-tuned by the real-time flow indicator and the multi-rotation metering needle valve, so that the sidestream smoke sampling flow rate can be adjusted to a relatively accurate value.

[0029] The gas phase substance analysis unit comprises a carbon monoxide analyzer 16 for analyzing the carbon monoxide concentration of the smoke sample, and a vacuum pump 15 for extracting the gas in the gas bag 13 and delivering it to the carbon monoxide analyzer 16.

[0030] The carbon monoxide analyzer 16 is a non-dispersive infrared carbon monoxide analyzer with a range of 0-2% by volume concentration, with a linearity and repeatability of 1%. Those skilled in the art can easily select other ranges of carbon monoxide analyzers in other embodiments according to the actual situation of the gas, or even select multiple analyzers with different ranges for sidestream smoke analysis.

[0031] The vacuum pump 15 pumps the sidestream smoke in the gas bag 13 into a carbon monoxide analyzer 16 for analysis. In this embodiment, a vacuum pump with adjustable suction flow is used. After the carbon monoxide content in the sidestream smoke is obtained by the carbon monoxide analyzer 16, the suction flow is increased to pump out the remaining gas in the gas bag into a vacuum state for the next test.

[0032] The suction simulation unit includes a cigarette holder 4 for fixing a cigarette, and a suction power source 1 for simulating the suction of the cigarette in the cigarette holder 4. A labyrinth ring and a neoprene gasket wrapped around the cigarette holder 4 can be installed to seal and fix the cigarette.

[0033] The suction power source 1 can be a suction needle cylinder. The suction needle cylinder is a piston structure, and a stepping motor drives the piston to move in a circular glass cylinder, thereby simulating the suction of a person on a cigarette. The suction needle cylinder also includes a controller for controlling the movement mode of the stepping motor. Those skilled in the art can easily understand that by changing the parameters of the controller, the suction mode such as the suction duration, suction cycle, suction curve, etc. and the capacity calibration can be changed, which will not be described here.

[0034] The gas bag 13 is provided with a gas bag inlet control valve 12 on the inlet pipe and a gas bag outlet control valve 14 on the outlet pipe. The purpose of the gas bag inlet control valve 12 and the gas bag outlet control valve 14 is to open and close according to the flow of the operation of the gas storage in the gas bag. In the sidestream smoke sampling process, the inlet control valve 12 is opened and the outlet control valve 14 is closed. In the carbon monoxide content analysis process, the inlet control valve 12 is closed and the outlet control valve 14 is opened. In this embodiment, the gas bag inlet control valve 12 and the outlet control valve 14 are electromagnetic two-position two-way valves, but can also be one-way valves, three-way valves, pinch valves, etc.

[0035] The sidestream smoke capture and storage unit also includes an absorption bottle 8, a filter 9 and a flow regulating valve 10; the absorption bottle 8, the filter 9 and the flow regulating valve 10 are connected in series from upstream to downstream on the inlet end of the sampling pump 11.

[0036] Further, the sidestream smoke capture and storage unit also includes a sidestream smoke filter catcher 7 for capturing particulate matter in the sidestream smoke, which is connected in series on the gas path between the fish tail cover 6 and the sampling pump 11.

[0037] The fish tail cover 6, the side stream smoke filter trap 7, the absorption bottle 8, the filter 9, the flow regulating valve 10, the sampling pump 11 and the gas bag 13 constitute the capture part of the side stream smoke of the cigarette. The filter 9 adopts a micro fog filter with a filtering capacity of 0.01 μm, further filters the side stream smoke and protects the elements in the later-stage gas path. The flow regulating valve 10 is used for precisely controlling and regulating the suction flow rate of the side stream smoke, and in the embodiment, a multi-rotation metering needle valve is used to realize the same. The material and size of the fish tail cover 6 and the absorption bottle 8 are processed according to the relevant provisions in the standard YC / T 185-2004, the fish tail cover 6 and the side stream smoke filter trap 7 are used to capture the particulate matters in the side stream smoke, and the absorption bottle 8 can analyze the gaseous matters such as ammonia and nitrogen oxide by pouring different solutions.

[0038] In an alternative embodiment, the suction simulation unit further comprises a three-way valve 2. The common end of the three-way valve 2 is connected to the suction power source 1, the normally closed end is connected to the cigarette holder 4, and the normally open end is connected to the ambient atmosphere or the exhaust device. The three-way valve 2 can adopt an electromagnetic three-way pilot valve, the common end of which is connected to the suction power source 1, the normally closed end is connected to the mainstream smoke filter trap 3, and the normally open end is connected to the exhaust system, and they are connected by gas pipes. The three-way valve 2 is controlled by the controller of the suction power source 1. The three-way valve 2 is configured to, when the suction power source 1 performs a suction action, establish the gas path communication between the suction power source 1 and the cigarette holder 4, and cut off the gas path communication between the suction power source 1 and the atmosphere path or the exhaust system; when performing an exhaust action, cut off the gas path communication between the suction power source 1 and the cigarette holder 4, and establish the gas path communication between the suction power source 1 and the atmosphere path or the exhaust system.

[0039] In an alternative embodiment, the suction simulation unit further comprises a mainstream smoke filter trap 3 for capturing the particulate matters in the mainstream smoke, and the mainstream smoke filter trap 3 is connected in series in the gas path between the cigarette holder 4 and the normally closed end of the three-way valve 2. The mainstream smoke filter trap 3 can be installed with a filter, and in the embodiment, a 44 mm Cambridge filter is used to capture the particulate matters in the mainstream smoke.

[0040] The present application provides an integrated device capable of analyzing carbon monoxide in sidestream smoke by constructing three modules, namely, a sidestream smoke capturing and storing unit, a gas phase analysis unit and a puff simulation unit. The device realizes active and complete capturing and targeted analysis of sidestream smoke, overcoming the shortcomings of relying on environmental diffusion or manual operation in the past. Through the coordinated division of the sampling pump 11 and the vacuum pump 15, the former is responsible for actively collecting and storing smoke during the puffing process, and the latter is responsible for transporting the stored smoke to the analyzer during the analysis stage, which fundamentally avoids the technical problems of high measurement uncertainty caused by incomplete capturing, sample transfer loss or cross contamination in traditional methods, and lays a reliable hardware foundation for subsequent accurate analysis of puff-by-puff release rules.

[0041] The present application also provides a method for analyzing carbon monoxide content in sidestream smoke of cigarettes, as shown in the following formula: Figure 2 The method comprises the following steps: Preparation stage Step S1, calibrate the puffing capacity, puffing duration and puffing interval time of the puffing needle cylinder; Step S2, adjust the sidestream smoke sampling flow and empty the residual gas in the air bag; Step S3, screen and prepare the cigarette samples, divide them into m batches, batch numbers 1~m, and n cigarettes in each batch. The number of cigarettes in each batch can be set according to actual needs.

[0042] Step S4, set the puffing parameters, and the number of puffs for each batch of cigarettes is consistent with the batch number corresponding thereto; Step S5, remove the residual gas in the air bag and install a cigarette to be tested; Step S6, ignite the cigarette, start the puffing needle cylinder and the sampling pump at the same time for testing, and remove the cigarette butt when the number of puffs reaches the set number; for example, for the kth batch, control the device to perform k puffs on each cigarette in the batch, and capture all the sidestream smoke generated in the batch; measure the total amount of carbon monoxide in the sidestream smoke of the batch by using the gas phase analysis unit, and record it as M k , wherein k=1, 2,..., m; Step S7, after the puffing of each batch of cigarettes is completed, analyze the carbon monoxide content in the sidestream smoke in the air bag to obtain the carbon monoxide volume concentration; Step S8, if all the cigarette samples are tested, go to step 9, otherwise go to step 5; Step S9, calculate the carbon monoxide content in the sidestream smoke of each batch of cigarettes, subtract the carbon monoxide contents of adjacent two batches, and multiply the result by the number n of cigarettes in each batch to obtain the carbon monoxide content in the sidestream smoke of the cigarette sample per puff.

[0043] When capturing the sidestream smoke in batches, the analysis of the gas in the air bag 13 is performed according to the following steps: The vacuum pump 15 is controlled to pump the sidestream smoke in the gas bag 13 into the carbon monoxide analyzer 16 for analysis at a first flow rate; After obtaining the carbon monoxide content result, the vacuum pump 15 is controlled to operate at a second flow rate greater than the first flow rate to pump out the residual gas in the gas bag 13 to a negative pressure state, preparing for the subsequent test.

[0044] By limiting the vacuum pump 15 to work in two stages at different flow rates, first at a suitable "first flow rate" to ensure that the smoke is smoothly and accurately sent into the carbon monoxide analyzer 16 to obtain reliable concentration data, and then switched to a higher "second flow rate" to quickly and thoroughly clean the gas bag. This operating mode effectively eliminates the cross contamination of residual gas in the gas bag on the next measurement result, ensuring the independence and accuracy of each sample data, while automatically completing the preparation of the analysis container, improving the efficiency and consistency of continuous testing.

[0045] The following will be described in detail by analyzing the carbon monoxide content of the sidestream smoke of the nth cigarette in the kth batch in this embodiment.

[0046] The number of puffs in this batch is k (puffs), and the puff interval time is t (seconds). The total sampling time R (seconds) is calculated by the formula: R=kxtxn (seconds); The sampling pump flow rate is F (mL / s), and the sampling gas volume V (mL) is calculated by the formula: V=FxR (mL); The volume concentration of carbon monoxide in the gas bag measured by the carbon monoxide analyzer is c (%); The average mass M of carbon monoxide in the sidestream smoke of this batch of cigarettes can be easily obtained by combining the formulas in sections 8.1 and 8.2 of standard YC / T 185-2004 k (mg); Similarly, the average masses of carbon monoxide in the sidestream smoke of the adjacent two batches are denoted as M k-1 (mg) and M k+1 (mg), respectively. The carbon monoxide content in the kth puff of sidestream smoke of this cigarette sample is (M k -M k-1 )(mg), and the carbon monoxide content in the k+1th puff of sidestream smoke is (M k+1 -M k )(mg).

[0047] The main idea of the method is to use a simple and reliable side stream smoke capture device, use the capture procedure of increasing the number of suction ports batch by batch, and subtract the adjacent batches of capture results to realize the easy-to-understand and reliable analysis method of the side stream smoke carbon monoxide content per port. The device and method parameters are flexible, and different schemes can be selected for experiments. It is not only suitable for monitoring the quality of cigarettes, but also suitable for scientific research of cigarette components. By reasonably selecting the number of cigarettes in each batch, the differences between cigarette samples can be eliminated to a certain extent.

[0048] In terms of calculation method, the application converts the measurement problem of dynamic process into the calculation problem of static total amount by means of the ingenious "mathematical difference" strategy. The method can accurately invert and calculate the release amount per port which cannot be directly captured by traditional technical means by implementing the capture procedure of "batch by batch and increasing the number of ports" and subsequently performing simple subtraction operation on the measurement results of adjacent batches. The scheme realizes high-precision analysis of the dynamic release law of side stream smoke carbon monoxide without relying on complex and expensive multi-path synchronous capture hardware system, only using conventional experimental devices and rigorous mathematical logic, greatly reducing the threshold and cost of technical implementation, and providing effective protection for scientific research and product quality monitoring.

[0049] The above describes the preferred embodiments of the application, but the application is not limited to the specific details in the above embodiments. Within the technical concept of the application, various simple modifications can be made to the technical solutions of the application, and these simple modifications all belong to the protection scope of the application.

[0050] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the application will not further describe various possible combinations.

[0051] In addition, various different embodiments of the application can be combined in any manner as long as they do not deviate from the idea of the application, and they should also be considered as disclosed by the application.

Claims

1. A device for analyzing carbon monoxide content in mainstream sidestream smoke of a cigarette by puff, characterized in that, The application relates to a device for testing particulate matter (PM) in mainstream smoke and sidestream smoke of a cigarette, comprising: a sidestream smoke capturing and storing unit, which comprises a fish tail cover (6) for collecting sidestream smoke, a sampling pump (11) for providing suction power for the sidestream smoke, and a gas bag (13) for storing the collected sidestream smoke; a gas phase matter analyzing unit, which comprises a carbon monoxide analyzer (16) for analyzing the carbon monoxide concentration of a smoke sample, and a vacuum pump (15) for pumping out the gas in the gas bag (13) and conveying the gas to the carbon monoxide analyzer (16); a suction simulating unit, which comprises a cigarette holder (4) for fixing a cigarette, and a suction power source (1) for simulating suction of the cigarette in the cigarette holder (4).

2. The puff-by-puff analysis device for carbon monoxide content in mainstream sidestream smoke of a cigarette according to claim 1, characterized by, A gas bag inlet control valve (12) is arranged on the gas inlet pipeline of the gas bag (13), and a gas bag outlet control valve (14) is arranged on the gas outlet pipeline.

3. The puff-by-puff analysis device for carbon monoxide content in mainstream sidestream smoke of a cigarette according to claim 1, characterized by, The sidestream smoke capturing and storing unit further comprises an absorption bottle (8), a filter (9) and a flow regulating valve (10); the absorption bottle (8), the filter (9) and the flow regulating valve (10) are sequentially connected in series at the gas inlet end of the sampling pump (11) from upstream to downstream.

4. The puff-by-puff analysis device for carbon monoxide content in mainstream sidestream smoke of a cigarette according to claim 1, characterized by, The sidestream smoke capturing and storing unit further comprises a sidestream smoke filter catcher (7) for capturing particulate matter in sidestream smoke, which is connected in series in the gas path between the fish tail cover (6) and the sampling pump (11).

5. The puff-by-puff analysis device for carbon monoxide content in mainstream sidestream smoke of a cigarette according to claim 1, wherein The suction simulating unit further comprises a three-way valve (2); the common end of the three-way valve (2) is connected to the suction power source (1), the normally closed end is connected to the cigarette holder (4), and the normally open end is connected to the ambient atmosphere or an exhaust device.

6. The puff-by-puff analysis device for carbon monoxide content in mainstream sidestream smoke of a cigarette according to claim 5, wherein The suction simulating unit further comprises a mainstream smoke filter catcher (3) for capturing particulate matter in mainstream smoke, which is connected in series in the gas path between the cigarette holder (4) and the normally closed end of the three-way valve (2).

7. A method for puff-by-puff analysis of carbon monoxide content in sidestream smoke of a cigarette, using the device according to any one of claims 1 to 6, characterized in that, The application further relates to a method for testing particulate matter (PM) in mainstream smoke and sidestream smoke of a cigarette, comprising the following steps: a sample preparation step: dividing a sample of cigarettes to be tested into m batches, wherein m is an integer greater than 1, and each batch contains n cigarettes, wherein n is an integer greater than or equal to 1; Batch capture and analysis step: test each batch of cigarettes in turn; for the kth batch, control the device to make k puffs on each cigarette in the batch, and capture all the sidestream smoke generated by the batch; measure the total amount of carbon monoxide in the sidestream smoke of the batch using the gas phase analysis unit, denoted as M k where k = 1, 2,..., m; The per-puff release amount calculation step: based on the total amount of carbon monoxide M of each batch k , the per-puff carbon monoxide release amount of the cigarette sample is calculated; wherein the release amount of the i-th puff is calculated based on the difference between the total amount of carbon monoxide of the i-th batch and the (i-1)-th batch divided by the number of cigarettes n in each batch, i = 2, 3,..., m.

8. The method of claim 7, wherein, in the batch capturing and analyzing step, the analysis of the gas in the gas bag (13) is performed according to the following steps: controlling the vacuum pump (15) to pump the sidestream smoke in the gas bag (13) into the carbon monoxide analyzer (16) for analysis at a first flow rate; after obtaining the carbon monoxide content result, controlling the vacuum pump (15) to operate at a second flow rate greater than the first flow rate to pump out the residual gas in the gas bag (13) and make it in a negative pressure state, so as to prepare for the subsequent test.

9. A method for analyzing the carbon monoxide content of sidestream smoke of a cigarette puff by puff, using the device of claim 5, characterized in that, The application further relates to a method for testing particulate matter (PM) in mainstream smoke and sidestream smoke of a cigarette, comprising the following steps: a sample preparation step: dividing a sample of cigarettes to be tested into m batches, wherein m is an integer greater than 1, and each batch contains n cigarettes, wherein n is an integer greater than or equal to 1; Batch capture and analysis step: test each batch of cigarettes in turn; for the kth batch, control the device to make k puffs on each cigarette in the batch, and capture all the sidestream smoke generated by the batch; measure the total amount of carbon monoxide in the sidestream smoke of the batch using the gas phase analysis unit, denoted as M k where k = 1, 2,..., m; Puff-by-puff release amount calculation step: based on the total amount of carbon monoxide M of each batch k , the puff-by-puff carbon monoxide release amount of the cigarette sample is calculated; wherein the release amount of the i-th puff is calculated based on the difference between the total amount of carbon monoxide of the i-th batch and the (i-1)-th batch divided by the number of cigarettes n in each batch, i = 2, 3,..., m; in the batch capturing and analyzing step, for each puff, the three-way valve (2) performs the following operation steps: in the suction stroke of the suction power source (1), the three-way valve (2) establishes the gas path communication between the suction power source (1) and the cigarette holder (4). During the exhaust stroke of the suction power source (1), the three-way valve (2) establishes air path communication between the suction power source (1) and the atmosphere or an exhaust device.

10. The method according to any one of claims 7 to 9, wherein the method is a puff-by-puff analysis of the carbon monoxide content of sidestream smoke of a cigarette. During the batch trapping and analyzing step, when switching the cigarette sample within the same batch, the sampling pump (11) keeps running continuously to ensure uninterrupted trapping of all the sidestream smoke generated in the batch.

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