CN104198573B - A kind of cigarette mainstream flue gas on-line analysis and its special on-line analysis device - Google Patents
A kind of cigarette mainstream flue gas on-line analysis and its special on-line analysis device Download PDFInfo
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Abstract
A kind of cigarette mainstream flue gas on-line analysis and its special on-line analysis device, are using smoking machine and ion molecule reaction mass spectrum（IMR‑MS）7 kinds of organic compounds in on-line analysis cigarette mainstream flue gas.Its analytical equipment includes：One channel smoke sucking machine, ion molecule reaction mass spectrum and the corresponding interface.Its analysis method is：During cigarette smoking, main flume Jing after standard constant current hole device is stably sampled is introduced directly into mass spectrograph by hollow capillary and carries out mass spectral analysis, capillary stretches out the part of mass spectrometer system by temperature control transmission line heating and thermal insulation, to prevent cigarette smoke in capillary because condensation is adsorbed.Per the interval of two mouthfuls of cigarette smoke suctions, the residual flue gas in sampling channel is removed by the way of high pure nitrogen blowback.Compared with traditional analysis method, apparatus of the present invention are simple and convenient to operate, it is possible to achieve the quantitative collection of cigarette smoke sample, and so as to truly realize that cigarette smoke on-line analysis is tested, sensitivity is high, reproducible, as a result accurately and reliably.
Description
Technical field
The present invention relates to cigarette smoke analysis field, specifically a kind of cigarette mainstream flue gas on-line analysis and its special
On-line analysis device, be using ion molecule reaction mass spectrum（IMR-MS）Part of compounds in on-line analysis cigarette mainstream flue gas
Method.
Background technology
Cigarette smoke be cigarette burning produce a kind of aerosol, be a complicated chemical system being continually changing, be
Burnt by pipe tobacco cylinder during cigarette smoking, cracked, being distilled and produce.The analysis of cigarette smoke chemical composition is a base
Plinth Journal of Sex Research works, and so far, people have identified 5000 many kinds of substance from cigarette smoke, and most materials property is lived
Sprinkle, cause cigarette smoke to be an aerosol mixed system that is highly dynamic, being continually changing.As the formation of cigarette smoke is
One dynamic process, traditional off-line analysis method is generally using trapping techniques such as cambridge filter, cold-trap, electrostatic, solution absorptions
Collect cigarette smoke, then as needed using the pretreatment process such as solvent extraction, SPE carry out sample extraction, purification and
Enrichment, is finally analyzed test using instruments such as chromatogram, mass spectrum, spectrum.As off-line analysis method is caught by fume sample
The impact of the factors such as collection, the purification of analysis object, pre-concentration, separation, analysis process complexity and time and effort consuming, and test result
What is reflected is also simply aged the feature of flue gas.As cigarette smoke chemical composition property is active, can detection method really anti-
The chemical composition for reflecting " fresh " flue gas is very important problem.To investigate the chemical feature of " fresh " flue gas, some online point
Analysis technology is attempted for cigarette smoke analysis and research.
With the development of mass-spectrometric technique, Soft ionization techniques are examined in the on-line analysis that flue gas gas phase is applied at the beginning of 21 century
Survey, main mass-spectrometric technique has ion molecule reaction mass spectrum（IMR-MS）, many proton uptake induced with laser dissociate mass spectrums（REMPI-
MS）, single photon ionization mass spectrum（SPI-MS）Deng.Various Soft ionization techniques realize sample molecule ion using ion-molecule reaction
Change, make to be difficult to form the compound of molecular ion under Mass Spectrometry Conditions, by the active reaction that produces with reactant gas molecules from
There is ion molecule reaction in son, form the adduct ion with these ions, such that it is able to the molecular weight according to compound and ionization
The analysis of mixture can be carried out.And the material little for architectural differences such as isomers, can be with using molecular ion reaction
Different mass spectral results are obtained, so as to complete analysis.
In recent years, the on-line analysis research to cigarette smoke is increasingly subject to the concern and attention of researcher, and ionic molecule is anti-
The effective means of cigarette smoke on line real time should have been become with vacuum ultraviolet ionized two kinds of technologies.IMR-MS adopts ion
Molecule reaction technology, using the Hg of low ion energy+、Xe+、Kr+Deng compound molecule to be analyzed ionization after through quadrupole rod matter
Numerator counts are obtained after contents analyzer, gathered and processed by software systems, preserve, transmission data, carry out monitor in real time.It is not required to
Sample pretreatment is wanted, instant analysis of directly sampling；Polarity, non-polar compound etc. can be analyzed.However, due to cigarette smoke
Granule phase substance matter is easily deposited in smoking machine pipeline and analytical instrument, from the point of view of documents and materials report, by smoking machine and pertinent instruments
Interfacing limit, current on-line analysis technology is analyzed for components in cigarette smoke gas phase part mostly, in sampling side
Sampled using six-way valve more than face or analysis is sampled by the subnormal ambient of analysis system directly, this can bring about sampling
Repeatability is difficult to ensure that the problems such as polluting with sampling channel.Therefore, the technology cigarette smoke component is carried out it is qualitative and quantitative
It is subject to certain restrictions during analysis.The country, Shanghai Tobacco group company replace one channel to inhale using 20 duct rotating disk smoking machines
Cigarette machine, using the characteristics of its rotation suction, carries out the elimination of memory effect with the suction in next duct, solves to a certain extent
The impact that suction channel flue gas residual is caused, but the pollution of MS acquisition passage cannot still eliminate, simultaneity factor sampling
Repeatability also needs further to be improved.
The content of the invention
The purpose of the present invention is invented for the weak point of existing cigarette smoke on-line analysis technology presence
A kind of cigarette mainstream flue gas on-line analysis and device, are using smoking machine and ion molecule reaction mass spectrum on-line analysis cigarette
The method of the part of compounds in main flume.There is provided a kind of simple structure, easy to operate, it is possible to achieve in various puffing regimenses
Under, on-line analysis are carried out to the various ingredients in single port cigarette smoke, the chemical feature to study " fresh " flue gas is provided
A kind of good technological means.
The purpose of the present invention is achieved through the following technical solutions：
A kind of cigarette mainstream flue gas on-line analysis, are online by one channel smoke sucking machine and ion molecule reaction mass spectrum
The method of the part of compounds in analysis cigarette mainstream flue gas, the sampling of main flume are crossed all standard constant current hole device and are realized,
Part main flume is introduced directly into IMR-MS by hollow capillary after being sampled by standard constant current hole device, and stretches in capillary
The part for going out mass spectrometer system is provided with heating and thermal insulation facility, per clear using high pure nitrogen blowback between two mouthfuls of cigarette smoke analyses
Except the residual flue gas in sampling channel, sampling channel are 180 DEG C with smoking machine interface temperature, sampling channel temperature is 250
DEG C, sampling channel is 250 DEG C with the interface temperature of IMR-MS, and it is 20 mbar that sampled pressure is sampled pressure.
The condition of the IMR-MS is as follows：
Ion gun：Mercury（Hg）10.44 eV；Other ion guns can also be selected according to the different of target compound, such as xenon
（Xe）12.13 eV, krypton（Kr）14.00 eV etc.；
Quality surface sweeping scope：3~500 amu；
Resolution ratio：1 amu；
Minute：50 ms；
Quota ion：Determined according to analysis target compound.
Realize that the special on-line analysis device construction used by above-mentioned on-line analysis is as follows：Including cigarette clamper and volume
One channel smoke sucking machine and ion molecule reaction mass spectrum IMR-MS that cigarette clamper is connected by flexible pipe, in cigarette clamper and list
A two-bit triplet magnetic valve is connected between the smoking machine of duct, is filled by constant current in another outlet of the two-bit triplet magnetic valve
Put and contact with IMR-MS with capillary sampling pipe, a two-bit triplet electricity is also equipped between capillary sampling pipe and IMR-MS
Magnet valve, another outlet of this two-bit triplet magnetic valve are connected with nitrogen back-blowing device, and heating is provided with capillary sampling pipe
Heat-insulation layer.
The capillary inner diameter 0.32mm.
The main flume sampling is realized by standard constant current hole device i.e. standard constant current hole, it is ensured that sampled
The repeatability of journey.Standard constant current hole device easily can be dismounted, and control flow can be determined according to actual needs, typically
For 1 ~ 10 mL/s.By flow and sampling time（Puff duration）Accurate control, it is ensured that in every mouthful of aspiration procedure
Sampling repeatability.
Process through deactivation inside the sampling channel of the main flume.
The sampling channel is hollow capillary, is externally provided with heating and heat-insulating device, can be using heater block to entirely adopting
Sample passage is heated.The design is to affect sample analysis to prevent flue gas from condensing in sampling channel.
Part of compounds in the on-line analysis cigarette mainstream flue gas of the present invention, specifically includes following steps：
Open IMR-MS and with heat less than 48 hours on, using dynamic standard gas generator, the mark of generation variable concentrations
The quasi- gas mass spectrometer system to IMR-MS carries out quantitative correction, timing is typically carried out using calibrating gas Single Point Correction Method.
Open smoking machine to preheat more than 20 minutes, need to set smoking machine parameter according to test.
Smoking cigarette when carrying out the on-line analysis of target compound in cigarette mainstream flue gas, at the standard conditions suction volume
Cigarette, part main flume（3.5 mL）Jing standard constant current holes device is quantitatively incorporated into IMR-MS and carries out on-line analysis, and remaining
Most of cigarette smoke is discharged with smoking machine suction channel.Its concrete analysis process is as follows：Set point after cigarette smoking pattern
Combustion cigarette, in 2 s aspiration procedures of cigarette, part（3.5 mL）Cigarette mainstream flue gas pass through standard constant current hole（Constant current hole fills
There is certain pressure differential between the two ends put, when pressure differential is more than some value, gas passes through constant current with constant flow velocity
Hole, so as to realize sampling analysis）Into the sampling channel of IMR-MS, hollow capillaries of the Jing with heater is introduced directly into
It is ionized in IMR-MS ion guns and simultaneously, so as to realize the on-line analysis of cigarette smoke.After per mouthful of suction terminates, by electricity
The automatic switchover of magnet valve.Whole exhaust gases passes are carried out with blowback using high pure nitrogen to eliminate front a bite flue gas residual to follow-up point
The impact of analysis test.
What the present invention can realize cigarette mainstream flue gas aspirates on-line analysis by mouth, and the introducing of fume sample is by standard perseverance
Orifice device is realized, simple to operation, reproducible.In cigarette mainstream flue gas different types of chemical combination is detected simultaneously can
Thing, this method sensitivity are high, reproducible, quantitatively accurately and reliably.Using high pure nitrogen blowback between per mouthful of suction of cigarette
Mode cleans exhaust gases passes, effectively can eliminate during cigarette mainstream flue gas are analyzed by mouth because of the flue gas residual between two mouthfuls of suctions
And the experimental error for causing.Using the present invention to 1,3-butadiene in cigarette mainstream flue gas, isoprene, benzene, toluene, acetaldehyde,
7 kinds of compounds such as acetone, 2- butanone carry out online by mouth analysis.Using reference cigarette, method is carried out repeating in a few days, in the daytime
Property investigate, concrete outcome is as shown in Table 1 and Table 2.From the results of view：Each target compound either first 7 mouthfuls of single port burst size
Or the relative deviation of whole cigarette burst size is respectively less than 15%, and differing greatly for last a bite burst size is primarily due to difference
Cigarette burn rate has differences, the difference for causing last suction flatly to cause for imperfect suction.By reference cigarette 1R5F
Analysis is compared with traditional analysis testing result with the test result of 3R4F, as shown in Figure 3 and Figure 4, as a result shows this
Invention is basically identical with conventional method acquired results to the test result of whole cigarette smoke burst size of reference cigarette.
The method of 17 kinds of target compounds of table is in a few days repeated（RSD, unit %）（n=10）
| Mouth number | Acetaldehyde | 1,3- butadiene | Acetone | Isoprene | 2- butanone | Benzene | Toluene |
| X1 | 6.54 | 4.48 | 11.52 | 10.69 | 12.03 | 13.45 | 14.92 |
| X2 | 4.03 | 5.42 | 5.14 | 4.11 | 0.84 | 4.04 | 0.24 |
| X3 | 5.04 | 2.68 | 7.35 | 5.3 | 5.17 | 8.96 | 5.77 |
| X4 | 5.42 | 5.97 | 9.12 | 8.66 | 5.06 | 12.72 | 5.46 |
| X5 | 5.4 | 2.8 | 8.84 | 6.83 | 3.66 | 1.01 | 0.66 |
| X6 | 6.04 | 6.12 | 8.12 | 7.51 | 4.81 | 6.21 | 13.8 |
| X7 | 5.42 | 3.24 | 5.64 | 3.28 | 5.47 | 6.32 | 1.29 |
| X8 | 32.66 | 23.03 | 29.13 | 22.73 | 21.7 | 32.93 | 45.45 |
| Total amount | 6.25 | 10.58 | 6.87 | 13.11 | 5.27 | 10.58 | 13.75 |
The method of 27 kinds of target compounds of table is repeated in the daytime（RSD, unit %）（n=10）
| Mouth number | Acetaldehyde | 1,3- butadiene | Acetone | Isoprene | 2- butanone | Benzene | Toluene |
| X1 | 8.92 | 9.36 | 8.19 | 6.31 | 7.29 | 6.17 | 7.39 |
| X2 | 3.74 | 3.06 | 3.04 | 4.31 | 4.80 | 9.56 | 8.24 |
| X3 | 4.23 | 2.94 | 3.29 | 4.68 | 4.80 | 9.53 | 8.43 |
| X4 | 4.02 | 3.35 | 3.64 | 4.50 | 6.34 | 9.99 | 9.16 |
| X5 | 3.94 | 3.51 | 3.85 | 4.80 | 5.57 | 10.90 | 9.47 |
| X6 | 4.37 | 3.63 | 4.28 | 5.26 | 5.75 | 10.89 | 9.85 |
| X7 | 4.61 | 3.34 | 3.79 | 5.34 | 5.40 | 12.90 | 9.64 |
| X8 | 14.56 | 18.05 | 16.47 | 24.32 | 26.58 | 31.80 | 28.14 |
| Total amount | 5.24 | 6.08 | 4.71 | 5.64 | 5.83 | 3.95 | 4.22 |
Description of the drawings
Fig. 1 is cigarette mainstream flue gas on-line analysis system connection diagram,
Wherein：1st, cigarette；2nd, cigarette clamper；3rd, two-bit triplet magnetic valve（3a, cigarette clamper and suction channel interface
And blowback air outlet, 3b, sampling pipe and IMR-MS interfaces and blowback air import）；, 4, connection suction syringe and cigarette clamper
Flexible pipe；5th, cambridge filter；6th, smoking machine suction syringe；7th, smoke sampling mouth（Standard constant current hole device）；8th, hollow capillary is adopted
Sample pipe（Internal diameter 0.32mm）；9th, heating and thermal insulation pipe；10th, IMR-MS systems.
Fig. 2 is the on-line analysis monitoring ion figure of 7 kinds of target compounds；
Fig. 3 is reference cigarette（1R5F）Test result is compared with conventional method test result；
Fig. 4 is reference cigarette（3R4F）Test result is compared with conventional method test result.
Specific embodiment
The present invention is further elaborated with reference to specific embodiment, these embodiments are only used for entering this patent
One step is illustrated rather than is limited the scope of the invention.
Embodiment 1
1,3-butadiene in cigarette smoke, isoprene, benzene, toluene, acetaldehyde, acetone, the online of 2- butanone are analyzed by mouth.
Concrete operation step is as follows：
Open IMR-MS systems and preheat on less than 48 hours, using dynamic standard gas generator, produce 1,3- fourths two
Alkene（50 ppm）, isoprene（500 ppm）, benzene（50 ppm）, toluene（100 ppm）, acetaldehyde（500 ppm）, acetone（100
ppm）, 2- butanone（100 ppm）Deng calibrating gas, quantitative correction is carried out to the mass spectrometer system of IMR-MS using Single Point Correction Method.
Open smoking machine and preheat 20 more than min, smoking machine parameter is set according to ISO3308（35 mL of pumping volume, takes out and holds
2 s of continuous time, 60 s of suction frequencies, 200 mm/s of smoking machine ambient wind velocity）.
The Mass Spectrometry Conditions for arranging IMR-MS systems are as follows：
Smoking machine interface temperature is 180 DEG C；Sampling channel temperature is 250 DEG C；The interface of sampling channel and IMS-MS
Place's temperature is 250 DEG C；Sampled pressure is 20 mbar.
Ion gun：Mercury（Hg）10.44 eV；
Mass scan range：3~500 amu；
Resolution ratio：1 amu；
Minute：50 ms；
Current strength：45 mA；
Target compound and quota ion：1,3-butadiene（54,53）, isoprene（68、67）, benzene（78）, toluene
（92）, acetaldehyde（44）, acetone（58）, 2- butanone（72）.
Cigarette sample A is placed in（22±1）DEG C, relative humidity（60±2）Balance 48 hours under the conditions of %, then select（It is flat
Equal quality ± 0.02）G with（Average resistance to suction ± 50）The cigarette of Pa is used for test analysis.
In 2 s aspiration procedures of cigarette, two-position three-way valve（3a）Device and suction channel communicating state are accommodated in cigarette,
Two-position three-way valve（3b）In sampling pipe and IMR-MS communicating states, 3.5mL cigarette mainstream flue gas pass through standard constant current hole device
Quantitatively introduce hollow capillary, hollow capillaries of the Jing with heater be introduced directly in IMR-MS ion guns and while by from
Sonization, so as to realize the on-line analysis of cigarette smoke.After suction terminates, two-position three-way valve（3a）Automatic switchover make suction channel with
Cigarette accommodates device and disconnects, two-position three-way valve（3b）Automatic switchover sampling pipe is disconnected with IMR-MS, high pure nitrogen from
Valve（3b）Into by valve（3a）Blowback is carried out to system pipeline（20 s of duration）, aspirated to subsequent analysis before eliminating flatly
The impact of test.Concrete sample tests are as shown in table 3.
The on-line analysis result of 7 kinds of target compounds in 3 cigarette sample A main flumes of table（ISO suction modes）
| Acetaldehyde（µg） | 1,3-butadiene（µg） | Acetone（µg） | Isoprene（µg） | 2- butanone（µg） | Benzene（µg） | Toluene（µg） | |
| 1st mouthful | 28.5 | 3.0 | 9.7 | 13.4 | 3.1 | 2.2 | 2.3 |
| 2nd mouthful | 34.4 | 1.6 | 14.1 | 11.7 | 4.4 | 1.7 | 3.2 |
| 3rd mouthful | 31.0 | 1.5 | 13.9 | 12.8 | 5.6 | 2.1 | 3.8 |
| 4th mouthful | 42.6 | 1.8 | 16.5 | 13.6 | 6.2 | 2.2 | 4.3 |
| 5th mouthful | 39.7 | 2.0 | 14.8 | 14.6 | 5.1 | 1.9 | 3.8 |
| 6th mouthful | 48.0 | 2.4 | 19.0 | 19.5 | 6.0 | 2.4 | 4.2 |
| 7th mouthful | 50.1 | 2.5 | 22.0 | 20.1 | 7.0 | 2.6 | 5.6 |
| 8th mouthful | 8.4 | 0.5 | 3.6 | 3.8 | 1.4 | 0.7 | 1.2 |
| Whole | 282.7 | 15.4 | 113.6 | 109.5 | 38.8 | 15.7 | 28.4 |
Embodiment 2
1,3-butadiene in cigarette smoke, isoprene, benzene, toluene, acetaldehyde, acetone, the online of 2- butanone are analyzed by mouth.
Concrete operation step is as follows：
Open IMR-MS systems and preheat on less than 48 hours, using dynamic standard gas generator, produce 1,3- fourths two
Alkene（50 ppm）, isoprene（500 ppm）, benzene（50 ppm）, toluene（100 ppm）, acetaldehyde（500 ppm）, acetone（100
ppm）, 2- butanone（100 ppm）Deng calibrating gas, quantitative correction is carried out to the mass spectrometer system of IMR-MS using Single Point Correction Method.
Open smoking machine and preheat 20 more than min, smoking machine parameter is set according to Canadian depth pumping criteria（Suction is held
55 mL are measured, 2 s of duration, 30 s of suction frequencies, 200 mm/s of smoking machine ambient wind velocity is taken out）.
The Mass Spectrometry Conditions for arranging IMR-MS systems are as follows：
Smoking machine interface temperature is 180 DEG C；Sampling channel temperature is 250 DEG C；The interface of sampling channel and IMS-MS
Place's temperature is 250 DEG C；Sampled pressure is 20 mbar.
Ion gun：Mercury（Hg）10.44 eV；
Mass scan range：3~500 amu；
Resolution ratio：1 amu；
Fix time：50 ms；
Current strength：45 mA；
Target compound and quota ion：1,3-butadiene（54,53）, isoprene（68、67）, benzene（78）, toluene
（92）, acetaldehyde（44）, acetone（58）, 2- butanone（72）.
Cigarette sample B is placed in（22±1）DEG C, relative humidity（60±3）Balance 48 hours under the conditions of %, then select（It is flat
Equal quality ± 0.02）G with（Average resistance to suction ± 50）The cigarette of Pa is used for test analysis.
In the 2s aspiration procedures of cigarette, two-position three-way valve（3a）Device and suction channel communicating state are accommodated in cigarette,
Two-position three-way valve（3b）In sampling pipe and IMR-MS communicating states, 3.5 mL cigarette mainstream flue gas pass through standard constant current hole device
Quantitatively introduce hollow capillary, hollow capillaries of the Jing with heater be introduced directly in IMR-MS ion guns and while by from
Sonization, so as to realize the on-line analysis of cigarette smoke.After suction terminates, two-position three-way valve（3a）Automatic switchover make suction channel with
Cigarette accommodates device and disconnects, two-position three-way valve（3b）Automatic switchover sampling pipe is disconnected with IMR-MS, high pure nitrogen from
Valve（3b）Into by valve（3a）Exclusion carries out blowback to system pipeline（Duration 20s）, aspirated to follow-up before eliminating flatly
The impact of analysis test.Concrete sample tests are as shown in table 4
The on-line analysis result of 7 kinds of target compounds in 4 cigarette sample B main flumes of table（HCI suction modes）
| Acetaldehyde（µg） | 1,3-butadiene（µg） | Acetone（µg） | Isoprene（µg） | 2- butanone（µg） | Benzene（µg） | Toluene（µg） | |
| 1st mouthful | 163.0 | 19.1 | 55.3 | 91.3 | 19.5 | 15.4 | 14.8 |
| 2nd mouthful | 127.0 | 7.6 | 54.9 | 50.2 | 19.5 | 8.4 | 14.7 |
| 3rd mouthful | 102.0 | 5.9 | 45.9 | 42.8 | 18.4 | 7.8 | 13.4 |
| 4th mouthful | 99.5 | 6.9 | 44.9 | 50.6 | 14.7 | 7.6 | 13.0 |
| 5th mouthful | 117.0 | 6.9 | 52.3 | 49.2 | 17.0 | 9.0 | 13.8 |
| 6th mouthful | 87.6 | 6.1 | 42.8 | 42.4 | 14.6 | 6.8 | 11.6 |
| 7th mouthful | 88.5 | 6.0 | 48.2 | 35.6 | 15.9 | 7.7 | 13.4 |
| 8th mouthful | 104.0 | 5.5 | 49.1 | 44.5 | 16.9 | 7.8 | 14.1 |
| 9th mouthful | 91.2 | 4.9 | 43.8 | 36.4 | 14.8 | 6.5 | 12.3 |
| 10th mouthful | 9.8 | 0.4 | 4.4 | 4.1 | 1.2 | 0.6 | 1.1 |
| Whole | 989.6 | 69.3 | 441.6 | 447.1 | 152.5 | 77.7 | 122.2 |
Claims (2)
1. a kind of cigarette mainstream flue gas on-line analysis, it is characterised in that：It is anti-by one channel smoke sucking machine and ionic molecule
The method for answering the part of compounds in mass spectrum on-line analysis cigarette mainstream flue gas, between cigarette clamper and one channel smoke sucking machine
A two-bit triplet magnetic valve is connected with, is adopted by a constant-current device and capillary in another outlet of the two-bit triplet magnetic valve
Sample pipe is connected with IMR-MS, and a two-bit triplet magnetic valve is also equipped between capillary sampling pipe and IMR-MS, this two
Another outlet of three-way magnetic valve is connected with nitrogen back-blowing device, and the sampling of main flume is realized by standard constant current hole device,
Part main flume is introduced directly into IMR-MS by hollow capillary Jing after the sampling of standard constant current hole device, and stretches in capillary
The part for going out mass spectrometer system is provided with heating and thermal insulation facility, per clear using high pure nitrogen blowback between two mouthfuls of cigarette smoke analyses
Except the residual flue gas in sampling channel, sampling channel are 180 DEG C with smoking machine interface temperature, sampling channel temperature is 250
DEG C, sampling channel is 250 DEG C with the interface temperature of IMR-MS, and it is 20 mbar that sampled pressure is sampled pressure；The IMR-
The condition of MS is as follows：
Ion gun：Mercury（Hg）10.44 eV, or xenon（Xe）12.1 3eV, krypton（Kr）14.00 eV；
Quality surface sweeping scope：3~500 amu；
Resolution ratio：1 amu；
Minute：50 ms；
Target compound and quota ion：1,3-butadiene, isoprene, benzene, toluene, acetaldehyde, acetone, 2- butanone.
2. the special on-line analysis device used by a kind of cigarette mainstream flue gas on-line analysis as claimed in claim 1, its
It is characterised by：The one channel smoke sucking machine being connected by flexible pipe with cigarette clamper including cigarette clamper and ion molecule reaction
Mass spectrum IMR-MS, is connected with a two-bit triplet magnetic valve between cigarette clamper and one channel smoke sucking machine, at this two three
Another outlet of three-way electromagnetic valve passes through a constant-current device and capillary sampling pipe and is connected with IMR-MS, in capillary sampling pipe and
A two-bit triplet magnetic valve is also equipped between IMR-MS, another outlet of this two-bit triplet magnetic valve is connected with nitrogen blowback
Device, is provided with heating and thermal insulation layer on capillary sampling pipe.
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