CN110186996B - Online measurement device for photoelectric efficiency curve of gas phase component of smoldering side stream smoke of cigarette - Google Patents
Online measurement device for photoelectric efficiency curve of gas phase component of smoldering side stream smoke of cigarette Download PDFInfo
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 131
- 239000000779 smoke Substances 0.000 title claims abstract description 78
- 238000005259 measurement Methods 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 32
- 241000251468 Actinopterygii Species 0.000 claims abstract description 24
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003546 flue gas Substances 0.000 claims abstract description 23
- 239000010453 quartz Substances 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 14
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- 239000011521 glass Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 15
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 abstract description 3
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- 238000001819 mass spectrum Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- 238000001269 time-of-flight mass spectrometry Methods 0.000 description 6
- 241000208125 Nicotiana Species 0.000 description 5
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
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- 238000003780 insertion Methods 0.000 description 3
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- 150000002500 ions Chemical class 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000004566 IR spectroscopy Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000004451 qualitative analysis Methods 0.000 description 2
- 238000010223 real-time analysis Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- ORILYTVJVMAKLC-UHFFFAOYSA-N Adamantane Natural products C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 1
- 244000198134 Agave sisalana Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000002319 photoionisation mass spectrometry Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
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Abstract
The invention discloses an on-line measuring device for photoelectric efficiency curve of gas phase component of smoldering side stream smoke of cigarettes, which is characterized in that: the non-combustion end of the cigarette is inserted into a cigarette socket of a stepping cigarette injector capable of controlling the movement direction and speed of the cigarette, the combustion end extends into the inner center of the thick end part of the fish tail cover, the outlet of the thin end part of the fish tail cover is sequentially connected with the flowmeter and the diaphragm vacuum pump through the flue gas flow tube through the Cambridge filter holder, the flue gas flow tube between the Cambridge filter holder and the flowmeter is communicated with one port of a flue gas transmission quartz capillary tube penetrating through the tube wall, and the other port of the flue gas transmission quartz capillary tube penetrates through the cavity wall of the photoionization flight time mass spectrometer to enter the vacuum ultraviolet ionization region. The invention has simple structure and is suitable for on-line measurement of the photoionization efficiency curve of the gas phase component of the smoldering side stream smoke of the cigarettes, thereby realizing the on-line identification function of isomers in the cigarettes.
Description
Technical Field
The invention belongs to the technical field of cigarette smoke chemical component analysis, and particularly relates to an online measurement device for a photoelectric efficiency curve of gas phase components of smoldering side stream smoke of a cigarette, so that the function of online identification of isomers in the gas phase components of the smoldering side stream smoke of the cigarette is realized.
Background
The combustion of cigarettes generally comprises two modes of smoking, namely the combustion of the cigarettes when the cigarettes are smoked and smoldering, namely the natural combustion of the cigarettes when the cigarettes are in a smoking gap. Two forms of cigarette smoke, namely mainstream smoke and sidestream smoke, are produced as a result of the different combustion modes of cigarette smoking and smoldering. The smoke sucked from the filter tip end of the cigarette during smoking is called main stream smoke; smoke released from the combustion end by the smoking gap and diffused through the wrapper directly into the environment is referred to as sidestream smoke, the former of which is the predominant source of cigarette sidestream smoke. Research shows that both the main stream smoke and the side stream smoke of the fresh cigarettes are high-concentration and high-activity aerosols, and particularly the gas phase substances accounting for more than 90% of the weight of the aerosols are active in nature, and the composition of substances in the aerosols changes rapidly. Therefore, in order to obtain the primary smoke information, the release characteristics of smoke in the combustion process of the cigarettes are studied in depth, the quality, style characteristics and harmfulness of the smoke of the cigarettes are evaluated scientifically, and a plurality of research works are developed in the aspects of online and real-time analysis of the gas phase components of the smoke of the fresh cigarettes by adopting an infrared spectrum method and a soft ionization mass spectrum method.
Infrared spectroscopy is a rapid, non-destructive analysis method. At present, the method has been widely applied to the on-line analysis of the gas phase components of the main stream and side stream smoke of cigarettes. However, infrared spectroscopy is a qualitative and quantitative analysis of components according to the specific absorption wavelength of a compound, so that for a complex flue gas system, due to overlapping and interference between spectral peaks, the method can only analyze a few target substances in the flue gas.
The vacuum ultraviolet ionization time-of-flight mass spectrometry is a very excellent, universal and rapid detection means, which generally uses a vacuum ultraviolet lamp, laser or synchrotron radiation light as an ionization light source, can ionize organic compounds in a soft ionization manner, almost generates only parent ions of an object to be detected without generating fragments, and is very suitable for on-line and real-time research on complex mixtures. In recent years, streibel et al (Streibel T, mitschke S, adam T, et al time-resolved analysis of the emission of sidestream smoke (SSS) from cigarettes during smoking by photo ionisation/time-of-flight mass spectrometry (PI-TOFMS): towards a better description of environmental tobacco smoke. Animal Bioanal Chem,2013,405 (22): 7071-7082.) have first analyzed cigarette sidestream smoke chemistry on-line using vacuum ultraviolet ionization time-of-flight mass spectrometry techniques using a laser as the light source. The technology has the advantages of high response speed, high sensitivity, suitability for multi-component detection and the like, but because photon energy generated by laser and a vacuum ultraviolet lamp is usually fixed, the time-of-flight mass spectrometry technology of the laser vacuum ultraviolet ionization source and the vacuum ultraviolet lamp ionization source can only give a photoionization mass spectrum under the fixed photon energy, and isomers can not be distinguished only according to the mass spectrum. The isomers, although of the same molecular weight, differ in their physical and chemical properties and even in their organoleptic characteristics and jeopardy. Therefore, the method has important significance in identifying and analyzing the isomer in the cigarette smoke in the online and real-time analysis process.
The synchrotron radiation vacuum ultraviolet light ionization time-of-flight mass spectrum technology not only can measure the photoionization mass spectrogram of a substance to be measured under the condition of fixed photon energy, but also can utilize the characteristic that the wavelength of the synchrotron radiation vacuum ultraviolet light is continuously tunable, and obtain photoionization efficiency curves of chemical components with different mass numbers by sampling and measuring a sample with stable sample injection flow, so that qualitative identification and quantitative comparison of isomers in the substance to be measured are realized. For example, wang Chenghui et al (Wang Chenghui, hu Yonghua, wang Jian, et al; ionization energy calculation of chemical components of cigarette smoke and application thereof in qualitative analysis. Tobacco science, 2011,293 (12): 26-33.) have utilized self-made manual cigarette smoke sampling injectors in combination with synchrotron radiation photoionization time-of-flight mass spectrometry to measure on-line a photoionization efficiency curve of chemical components of the mainstream smoke gas phase of a cigarette, and obtain ionization energy of molecules of a substance according to an "inflection point" on the curve, thus preliminarily realizing identification of isomerism in the gas phase of the cigarette smoke. Pan et al (Pan Y, hu Y H, wang J, et al, online characterization of isomeric/isobaric components in the gas phase of mainstream cigarette smoke by tunable synchrotron radiation vacuum ultraviolet photoionization time-of-flight mass spectrometry and photoionization efficiency curve analytical Chemistry,2013,85 (24): 11993-12001.) utilize the same experimental apparatus described above, and simultaneously combine with the simulation of a photoionization efficiency curve to more fully identify isomers in the gas phase of a mainstream smoke of a cigarette. The applicant discloses in the patent application with application number 201720575482.2 a measuring device for the photoelectric efficiency curve of the gas phase composition of the main stream smoke of a cigarette, which can realize the on-line measurement of the photoelectric efficiency curve of the gas phase composition of the main stream smoke of the cigarette under different smoking mouth numbers under standard cigarette smoking conditions. However, because the main stream smoke and the side stream smoke of the cigarettes are produced in different modes, the device cannot be suitable for online measurement of the photoelectric efficiency curve of the gas phase components of the side stream smoke of the cigarettes. In addition, the off-line analysis device of the cigarette sidestream smoke widely used in the tobacco industry and the on-line analysis device reported by the Streibel et al generally insert the filter tip end of the cigarette into a stationary cigarette holder in a smoking machine and extend the combustion end into a fish tail cover, and simultaneously adopt a vacuum pump to suck the sidestream smoke. When the smoking machine periodically smokes cigarettes, sidestream smoke is periodically generated, and stable smoke sample injection flow cannot be provided. Even if the smoking machine does not smoke and the cigarettes are naturally smoldering, as the length of the cigarettes is gradually shortened along with the combustion of the cigarettes, the cigarette combustion cone is gradually close to the fish tail cover, and more smoke is adsorbed on the side wall of the fish tail cover; on the other hand, because the air flow rates of different parts in the fish tail cover are different, the combustion state of the cigarette combustion cone is different, so that the stability of the sidestream smoke sample injection flow is also affected. Therefore, the analysis device is not suitable for online measurement of the photoionization efficiency curve of the cigarette side-stream smoke, and no report exists on a measurement method and a measurement device of the photoionization efficiency curve of the cigarette side-stream smoke component at present.
Disclosure of Invention
The invention provides the online measuring device which has simple result, convenient operation and stable smoke sample injection flow and can realize the photoelectric efficiency curve of the gas phase component of the smoldering side stream smoke of the cigarette, thereby providing a good technical means for the tobacco science and technology personnel to analyze the isomer in the gas phase component of the side stream smoke of the cigarette online.
The invention solves the technical problems by adopting the following technical scheme:
the invention relates to a measuring device for a gas phase component photoionization efficiency curve of smoldering side-stream smoke of cigarettes, which is characterized in that: setting a stepping cigarette sample injector, a fish tail cover, a photoionization flight time mass spectrometer and a flue gas transmission quartz capillary;
the step cigarette injector comprises: the cigarette holder comprises a controller, a servo motor, a conveyor belt, a cigarette sliding rail, a pi-shaped push rod and an infrared probe; the controller is respectively connected with the servo motor and the infrared probe through wires; one end of the conveying belt is loaded on a rotating shaft of the servo motor, the other end of the conveying belt is loaded on a driven shaft, one end of the pi-shaped push rod is connected with the conveying belt through a sliding block fixed on the conveying belt, and the other end of the pi-shaped push rod is connected with a cigarette socket which is arranged in the cigarette sliding rail and can be inserted into cigarettes;
the fish tail cover is a 'convex' glass cylinder and consists of a thick end part and a thin end part; 2 round holes with center vertical lines perpendicular to each other and in the same plane are formed in the pipe wall of the thick end part of the fish tail cover, wherein one round hole is a cigarette inserting round hole, and the other round hole is an infrared detection round hole on the same side as the infrared probe; an outlet of the thin end part of the fish tail cover passes through the Cambridge filter disc holder and is sequentially connected with the flowmeter and the diaphragm vacuum pump through the flue gas flow pipe;
the photoelectric ionization time-of-flight mass spectrometer is internally provided with a synchrotron radiation vacuum ultraviolet light introduction port and a vacuum ultraviolet light ionization region, and is externally provided with an upper vacuum extraction port and a lower vacuum extraction port;
one port of the flue gas transmission quartz capillary tube is communicated with a flue gas flow tube between the Cambridge filter disc holder and the flowmeter, and the other port passes through the cavity wall of the photoionization time-of-flight mass spectrometer and enters a vacuum ultraviolet ionization region.
The invention relates to an on-line measuring device for photoelectric efficiency curve of gas phase component of smoldering side stream smoke of cigarettes, which is also characterized in that: the running direction and the running speed of the rotating shaft of the servo motor can be set and controlled by the controller, and the running speed of the rotating shaft can be automatically controlled by the combination of the infrared probe and the controller when the cigarette burns.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the method, a stepping cigarette injector is adopted to convey cigarette to be tested according to the generation mode of the smoldering sidestream smoke of the cigarette, and the cigarette to be tested is arranged in a cigarette sliding rail, so that the cigarette cannot deviate left and right when moving, and meanwhile, the front and rear positions of a cigarette combustion cone are monitored by an infrared probe, so that the combustion cone is ensured to burn at the center of a fish tail cover during smoldering of the cigarette, the supply of stable smoke injection flow during mass spectrum injection is realized to the maximum extent, and the online and real-time measurement of the photoionization efficiency curve of the gas phase component of the smoldering sidestream smoke of the cigarette can be better realized.
2. The invention has simple structure and convenient operation, is not only suitable for on-line measurement of the photoionization efficiency curve of the gas phase component of the smoldering side stream smoke of the specially-made research type cigarette, but also can conveniently measure the photoionization efficiency curve of the gas phase component of the smoldering side stream smoke of the common cigarette.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic side view of a servo motor and a rotating shaft of the present invention;
reference numerals in the drawings: 1 a step cigarette injector, 2 a controller, 3 a servo motor, 4 cigarette slide rails, 5 cigarette sockets, 6 cigarette cigarettes, 7 cigarette insertion round holes, 8 infrared detection round holes, 9 infrared probes, 10 driven shafts, 11 conveyor belts, 12 fish tail covers, 13 sliding blocks, 14 'pi' type push rods, 15 rotating shafts, 16 Cambridge filter disc holders, 17 smoke flow pipes, 18 flowmeter, 19 diaphragm vacuum pumps, 20 smoke transmission quartz capillary tubes, 21 photoelectric separation flight time mass spectrometers, 22 vacuum ultraviolet ionization areas, 23 synchronous radiation vacuum ultraviolet light introduction ports, 24 upper vacuum extraction ports and 25 lower vacuum extraction ports.
Fig. 3 is a photoionization efficiency curve for several representative smoke constituents of example 1 in the smoke gas phase of the smoldering sidestream smoke having mass numbers 54, 78, 92 and 106, respectively.
Fig. 4 is a photoionization efficiency curve for several representative smoke constituents of example 2 cigarette smoldering sidestream smoke gas phase having mass numbers 54, 78, 92, and 106, respectively.
Detailed Description
The invention is further described below by means of specific embodiments in connection with the accompanying drawings.
As shown in fig. 1 and 2, the respective components of the device include: a step cigarette injector 1, a fish tail cover 12, a photoionization time-of-flight mass spectrometer 21 and a flue gas transmission quartz capillary 20.
The stepping cigarette injector 1 consists of a controller 2, a servo motor 3, a conveyor belt 11, a cigarette slide rail 4, a pi-shaped push rod 14, an infrared probe 9 and the like. Wherein: the controller 1 is respectively connected with the servo motor 3 and the infrared probe 9 through leads; one end of the conveyor belt 11 is mounted on a rotating shaft 15 of the servo motor 3, and the other end is mounted on a driven shaft 10; one end of a pi-shaped push rod 14 is connected with the conveyor belt 11 through a sliding block 13 fixed on the conveyor belt 11, and the other end is connected with a cigarette socket 5 which is arranged in the cigarette sliding rail 4 and can be inserted into a cigarette 6.
The fish tail cover 12 is a 'convex' glass cylinder and consists of a thick end part and a thin end part; 2 round holes with center vertical lines perpendicular to each other and in the same plane are formed in the pipe wall of the thick end part of the fish tail cover 12, wherein one round hole is a cigarette insertion round hole 7, and the other round hole is an infrared detection round hole 8 on the same side as the infrared probe 9; the outlet of the fine end portion of the tail cap 12 is connected in turn to a flow meter 18 and a diaphragm vacuum pump 19 through a sisal filter holder 16 and through a flue gas flow tube 17.
The photoionization time-of-flight mass spectrometer 21 is internally provided with a synchrotron radiation vacuum ultraviolet light introduction port 23 and a vacuum ultraviolet light ionization region 22, and externally provided with an upper vacuum extraction port 24 and a lower vacuum extraction port 25.
One port of the fume transfer quartz capillary 20 communicates with the fume flow tube 17 between the Cambridge filter holder 16 and the flow meter 18, and the other port passes through the chamber wall of the photoionization time-of-flight mass spectrometer 21 into the vacuum ultraviolet ionization region 22.
In particular, the settings of the controller 2 include four modes, namely: a forward mode of uniform speed operation, a reverse mode of uniform speed operation, an infrared detection mode and a stop operation mode. When the constant speed forward mode or the constant speed reverse mode is started, the rotating shaft 15 of the servo motor 3 rotates forward or reversely, so that the cigarette socket 5 and the cigarette 6 move forward or reversely at a certain set speed through the conveyor belt 11 and the n-shaped push rod 14; when the infrared detection mode is started, the cigarette socket 5 and the cigarette 6 only move towards the direction of the fish tail cover 12, and the movement speed is automatically controlled by the combination of the infrared probe 9 and the controller 2; when the stop operation mode is started, the cigarette socket 5 and the cigarette 6 stop moving.
The infrared probe 9 is loaded on a base which can be adjusted up and down and horizontally rotated; the part of the flue gas transmission quartz capillary tube 20 between the flue gas flow tube 17 and the cavity wall of the vacuum ultraviolet ionization region 22 of the photoionization time-of-flight mass spectrometer 21 is provided with an electric heating sleeve, the heating temperature is set and controlled by a special temperature controller, and the flue gas transmission quartz capillary tube 20 is connected or fixed with the flue gas flow tube 17 and the cavity wall of the photoionization region 22 of the photoionization time-of-flight mass spectrometer 21 in any airtight mode; the thin end portion of tail cap 12 may also be attached or secured to Cambridge filter holder 16 in any manner that is air tight.
The photoionization flight time mass spectrometer 21 used in the invention is an instrument which is developed by the combination of the smoke industry Limited liability company in Anhui and the synchronous radiation laboratory in China science and technology university, the mass resolution is superior to 2000, and the light source can use a vacuum ultraviolet lamp or can make the synchronous radiation of vacuum ultraviolet. When synchrotron radiation vacuum ultraviolet light is used as an ionization light source, two modes can be adopted in the measurement mode, wherein one mode is a detection mode of fixed photon energy, and the other mode is a detection mode of continuous scanning photon energy. In the invention, synchrotron radiation vacuum ultraviolet light is used as an ionization light source, and a detection mode of continuously scanning photon energy is adopted.
Before an experiment, the working power supply of the photoionization flight time mass spectrometer 21 is turned on, and the energy scanning step length, the measuring time of each mass spectrogram and the photon energy scanning range are set; loading a Cambridge filter into Cambridge filter holder 16; turning on the diaphragm vacuum pump 19; setting the operating flow rate of the flowmeter 18; setting the heating temperature of the flue gas transmission quartz capillary tube 20; then, the direction of the fish tail cover 12 is adjusted in a rotating mode, the cigarettes are inserted into the round holes 7 to face the cigarette sliding rail 4, the infrared detection round holes 8 face the infrared probe 9, and meanwhile the position of the infrared probe 9 is adjusted, so that the infrared light emitting holes are in the same straight line with the centers of the infrared detection round holes 8 and the thick end portion of the fish tail cover 12. When the vacuum degree of the photoionization time-of-flight mass spectrometer 21 meets the requirement, the sample test can be performed after the heating temperature of the flue gas transmission quartz capillary 20 reaches the set temperature and is stable.
In the experimental process, firstly, a working power supply of the controller 2 is turned on, the movement rate of the cigarette sockets 5 is set, a uniform speed operation reverse mode is started, at the moment, the cigarette sockets 5 move towards the opposite direction of the fish tail cover 12, and after moving to a proper position, a stop operation mode is started, and cigarettes 6 to be tested are inserted into the cigarette sockets 5; then starting a constant-speed operation forward mode, wherein the cigarette socket 5 drives the cigarette 6 to move towards the tail cover 12, and starting a stop operation mode again when the front end of the cigarette 6 passes through the cigarette insertion round hole 7 and exceeds the center of the thick end part of the tail cover 12 by 4-5mm, and stopping movement of the cigarette 6; then, the electronic igniter is adopted to ignite the cigarette 6 upwards from the inside of the port of the thick end part of the fish tail cover 12, the infrared detection mode of the controller 2 is started, and when the cigarette 6 starts to move, the photoionization flight time mass spectrometer 21 is started to measure the cigarette smoke.
After the measurement is finished, a series of photoionization mass spectrograms under different photon energies can be obtained, then the peak areas of different mass spectrum peaks in each mass spectrogram are integrated, and the integrated value of the same mass spectrum peak area is plotted against the photon energies, so that the photoionization efficiency spectrum curves of different mass smoke components in the smoldering side stream smoke gas phase of the cigarette can be obtained.
Example 1
Adopting a special research cigarette with a cigarette length of 15cm, a circumference of 24.2mm and no filter tip as a research object; the inner diameter and the length of the flue gas transmission quartz capillary tube are respectively set to be 100 mu m and 25cm, and the heating temperature is set to be 200 ℃; the working flow rate of the flowmeter is set to 2000mL/min; the energy scanning step length of the photoionization flight time mass spectrometer is set to be 4 angstroms, the measurement time of each mass spectrogram is set to be 10 seconds, and the photon energy scanning range is set to be 8.0-10.6 eV. After the measurement is finished, the photon energy value is used as an abscissa, and the ionic strength value is used as an ordinate to be plotted, so that the photoionization efficiency curves of the smoke components with different mass numbers can be obtained.
The photoionization efficiency curves of several representative smoke components with mass numbers 54, 78, 92 and 106 in the smoldering sidestream smoke gas phase of the cigarette are shown in fig. 3.
Example 2
Basically, the method is the same as in example 1, except that a conventional cigarette with a length of 84mm, a length of tipping paper of 32mm and a circumference of 24.2mm is selected as a study object; and the three energy ranges of 8.0-8.7eV, 8.7-9.6eV and 9.6-10.6eV are respectively measured in the photon energy scanning range of 8.0-10.6 eV, namely, the first cigarette is measured in the energy range of 8.0-8.7eV, the second cigarette is measured in the energy range of 8.7-9.6eV, and finally the third cigarette is measured in the energy range of 9.6-10.6 eV. After the measurement is finished, the photon energy of each scanning energy section and the corresponding mass spectrum peak ion intensity are integrated in the same document, and the photon energy value is used as an abscissa, and the ion intensity value is used as an ordinate to be plotted, so that the photoionization efficiency curves of the smoke components with different mass-to-charge ratios in the photon energy range of 8.0-10.6 eV can be obtained.
The photoionization efficiency curves of several representative smoke components of 54, 78, 92 and 106 mass numbers in the smoke gas phase of the smoldering side stream of the cigarette are shown in fig. 4.
Therefore, the on-line measurement device for the photoelectric separation efficiency curve of the gas phase component of the smoldering side stream smoke of the cigarette can effectively realize on-line measurement of the photoelectric separation efficiency curve of the gas phase component of the smoldering side stream smoke of different types of cigarettes, thereby providing an effective technical method and means for tobacco technicians to scientifically identify and analyze the isomer in the gas phase component of the smoldering side stream smoke of the cigarette.
Claims (2)
1. An on-line measuring device for photoelectric efficiency curve of gas phase component of smoldering side stream smoke of cigarette is characterized in that: a step cigarette injector (1), a fish tail cover (12), a photoionization flight time mass spectrometer (21) and a flue gas transmission quartz capillary tube (20) are arranged;
the step cigarette injector (1) comprises: the device comprises a controller (2), a servo motor (3), a conveyor belt (11), a cigarette slide rail (4), a pi-shaped push rod (14) and an infrared probe (9); the controller (2) is respectively connected with the servo motor (3) and the infrared probe (9) through leads; one end of the conveyor belt (11) is loaded on a rotating shaft (15) of the servo motor (3), and the other end of the conveyor belt is loaded on a driven shaft (10); one end of the pi-shaped push rod (14) is connected with the conveyor belt (11) through a sliding block (13) fixed on the conveyor belt (11), and the other end of the pi-shaped push rod is connected with a cigarette socket (5) which is arranged in the cigarette sliding rail (4) and can be inserted into a cigarette (6);
the fish tail cover (12) is a 'convex' glass cylinder and consists of a thick end part and a thin end part; 2 circular holes with center vertical lines perpendicular to each other and in the same plane are formed in the pipe wall of the thick end part of the fish tail cover (12), wherein one circular hole is a cigarette inserting circular hole (7), and the other circular hole is an infrared detection circular hole (8) on the same side as the infrared probe (9); the outlet of the thin end part of the fish tail cover (12) is sequentially connected with a flowmeter (18) and a diaphragm vacuum pump (19) through a Cambridge filter disc holder (16) and a flue gas circulation pipe (17);
the photoelectric ionization time-of-flight mass spectrometer (21) is internally provided with a synchrotron radiation vacuum ultraviolet light introduction port (23) and a vacuum ultraviolet light ionization region (22), and is externally provided with an upper vacuum extraction port (24) and a lower vacuum extraction port (25);
one port of the flue gas transmission quartz capillary tube (20) is communicated with a flue gas flow tube (17) between the Cambridge filter holder (16) and the flowmeter (18), and the other port passes through the cavity wall of the photoionization time-of-flight mass spectrometer (21) and enters a vacuum ultraviolet ionization region (22).
2. The on-line measurement device for the photoelectric efficiency curve of the gas phase component of the smoldering side stream smoke of the cigarette according to claim 1, which is characterized in that: the running direction and the running speed of the rotating shaft (15) of the servo motor (3) can be set and controlled by the controller (2), and the running speed of the rotating shaft (15) can be automatically controlled by the combination of the infrared probe (9) and the controller (2) when the cigarette (6) burns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635351.2A CN110186996B (en) | 2019-07-15 | 2019-07-15 | Online measurement device for photoelectric efficiency curve of gas phase component of smoldering side stream smoke of cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635351.2A CN110186996B (en) | 2019-07-15 | 2019-07-15 | Online measurement device for photoelectric efficiency curve of gas phase component of smoldering side stream smoke of cigarette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110186996A CN110186996A (en) | 2019-08-30 |
| CN110186996B true CN110186996B (en) | 2024-02-13 |
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| CN114597113B (en) * | 2020-12-04 | 2024-08-20 | 中国科学院大连化学物理研究所 | Photoionization source capable of automatically tuning signal intensity |
| CN113694755B (en) * | 2021-09-29 | 2024-08-06 | 红云红河烟草(集团)有限责任公司 | Cigarette detects clamping structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590547A (en) * | 2012-03-06 | 2012-07-18 | 中国科学院安徽光学精密机械研究所 | Method and device for measuring smoldering rate of cigarette paper |
| CN102854041A (en) * | 2011-06-30 | 2013-01-02 | 上海交通大学医学院 | Collection and capture device for mainstream and sidestream smoke of cigarette |
| CN103884739A (en) * | 2014-04-15 | 2014-06-25 | 安徽中烟工业有限责任公司 | Cigarette absorption combustion and static combustion released heat measurement device |
| CN105954474A (en) * | 2016-07-06 | 2016-09-21 | 中国烟草总公司郑州烟草研究院 | Rotary smoking method capable of fixing cigarette |
| CN206696228U (en) * | 2017-05-23 | 2017-12-01 | 安徽中烟工业有限责任公司 | A kind of measurement apparatus of gaseous phase of main stream smoke of cigarette composition photo-ionisation efficiency curve |
| CN210166343U (en) * | 2019-07-15 | 2020-03-20 | 安徽中烟工业有限责任公司 | On-line measuring device for cigarette smoldering side-stream smoke gas-phase component photoionization efficiency curve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7221861B1 (en) * | 2005-11-10 | 2007-05-22 | Arkasas State University - Research And Development Institute (Asu-Rdi) | Universal transfer apparatus and method to use same |
-
2019
- 2019-07-15 CN CN201910635351.2A patent/CN110186996B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854041A (en) * | 2011-06-30 | 2013-01-02 | 上海交通大学医学院 | Collection and capture device for mainstream and sidestream smoke of cigarette |
| CN102590547A (en) * | 2012-03-06 | 2012-07-18 | 中国科学院安徽光学精密机械研究所 | Method and device for measuring smoldering rate of cigarette paper |
| CN103884739A (en) * | 2014-04-15 | 2014-06-25 | 安徽中烟工业有限责任公司 | Cigarette absorption combustion and static combustion released heat measurement device |
| CN105954474A (en) * | 2016-07-06 | 2016-09-21 | 中国烟草总公司郑州烟草研究院 | Rotary smoking method capable of fixing cigarette |
| CN206696228U (en) * | 2017-05-23 | 2017-12-01 | 安徽中烟工业有限责任公司 | A kind of measurement apparatus of gaseous phase of main stream smoke of cigarette composition photo-ionisation efficiency curve |
| CN210166343U (en) * | 2019-07-15 | 2020-03-20 | 安徽中烟工业有限责任公司 | On-line measuring device for cigarette smoldering side-stream smoke gas-phase component photoionization efficiency curve |
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