CN1087427A - The measuring method of carbon monoxide content and device in the cigarette smoke - Google Patents
The measuring method of carbon monoxide content and device in the cigarette smoke Download PDFInfo
- Publication number
- CN1087427A CN1087427A CN 92111886 CN92111886A CN1087427A CN 1087427 A CN1087427 A CN 1087427A CN 92111886 CN92111886 CN 92111886 CN 92111886 A CN92111886 A CN 92111886A CN 1087427 A CN1087427 A CN 1087427A
- Authority
- CN
- China
- Prior art keywords
- carbon monoxide
- gas
- cigarette smoke
- air
- monoxide content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to the measuring method and the device of carbon monoxide content in the cigarette smoke, it is characterized in that before using the CO sensor measurement, adopt membrane separation device that hydrogen is removed, and the carbon monoxide in the flue gas is diluted air distributing device with air dilute, thereby make the measurement of carbon monoxide content in the cigarette smoke, detection time is short, program is simple, environmental quality requirement is low and measure accurately.
Description
The present invention relates to the measuring method and the device thereof of carbon monoxide content in the measurement of carbon monoxide content in the cigarette smoke, particularly flue gas.
Carbon monoxide (CO) is a kind of toxic gas.Its protoheme easy and in the blood combines, and makes it to lose the ability of delivery of oxygen, the infringement health of human body.Carbon monoxide content is higher in the cigarette smoke, and concentration reaches 3～6%.Therefore, in the flue gas carbon monoxide content how much be an important indicator of evaluation cigarette quality.
The instrumental analysis of carbon monoxide content in the cigarette smoke adopts vapor-phase chromatography to carry out in early days.Because shortcomings such as vapor-phase chromatography is long detection time, and trace routine is loaded down with trivial details generally use the infrared analysis instrument to detect now.
The principle of infrared analyzer is to utilize carbon monoxide contained in the gas of sample to absorb infrared energy, compares with the energy that reference gas (CO) in being sealed in independent container is absorbed, and becomes electric signal then, through amplifier circuit input registering instrument.
The infrared ray carbonyl analyzer has higher precision (2%), and the response time, short (15 seconds) reached maximal value, were not subjected to advantages such as other chemical substance interference.But the service condition harshness of this instrument requires constant temperature and humidity, and preheating time is long, the detecting element complex structure, and volume is big and cost an arm and a leg the maintenance cost height.
Now commercial electric chemical formula carbonmonoxide detector is widely used in the environmental monitoring and the air monitoring occasion of mine, oil, chemical industry etc., the simple (see figure 1) of its principle of work.When containing carbon monoxide in the sample gas, the carbon monoxide with reducing property is promptly in anodic oxidation: CO+H
2O → CO
2+ 2H
++ 2e, airborne oxygen are in cathodic reduction: 1/2 O
2+ 2H
++ 2e → H
2O.Overall reaction is CO+1/2O
2→ CO
2Two electrodes connect and compose the loop by external circuit again.The size of strength of current is promptly linear with carbon monoxide content in the loop.
The outstanding feature of electric chemical formula carbonmonoxide detector be simple in structure, volume is little, reaction fast (response time is in 10 seconds), has good linear relationship and precision preferably.It is easy and simple to handle, easy to maintenance, cheap simultaneously.This instrument quite is weak on selectivity.Reducing substances such as hydrogen, olefines, aldehydes all produce interference to the detection of carbon monoxide.Wherein the interference problem of hydrogen is still unresolved both at home and abroad so far, has limited the range of application of this instrument greatly.In addition, during greater than 0.5% CO gas, the electric chemical formula carbonmonoxide detector needs use the kapillary current limliting usually on sensor at detectable concentration so that the signal magnitude of its generation can with the concentration formation good linear relationship of carbon monoxide in the detected gas.When testing carbonomonoxide concentration under the situation that exists hydrogen to disturb, therefore the annoyance level of hydrogen can increase.This be since the rate of diffusion of hydrogen greater than the rate of diffusion of carbon monoxide, when being diffused into electrode surface through kapillary, occur hydrogen enrichment caused.
Contain about 400-500 kind gas componant in the cigarette smoke, wherein chemical composition is about N
258%; O
212%; CO
213%; CO3.5%; H
20.5%, grain phase component 8% and gaseous component 5%(are mainly hydro carbons, water, aldehydes and ketone etc.), for complexity like this and the high cigarette smoke of interference, present existing electric chemical formula carbonmonoxide detector obviously is helpless.
The object of the present invention is to provide the measuring method and the device thereof of carbon monoxide content in a kind of cigarette smoke, can make detection time short, program is simple, environmental requirement is low and measure accurately.
The invention provides the measuring method of carbon monoxide content in a kind of cigarette smoke, comprise with filtration unit and remove organic impurities, and finally send into and step such as measure in the electric chemical formula carbon monoxide transducer, it is characterized in that also including following steps:
With the gas film tripping device hydrogen in the cigarette smoke is but removed;
With air dilution air distributing device the carbonomonoxide concentration in the flue gas is diluted to the PPm level.
The present invention also provides the measuring system of using said method, includes sampling pump 2, pressure maintaining valve 3, filtration unit 5 and chemical formula carbon monoxide transducer 6, it is characterized in that also including gas mould tripping device 4 and air dilution air distributing device 1.Air distributing device 1 is formed by pertusate outer tube sleeve 8 dresses of core pipe 7 and sidewall, and core pipe 7 is the sample gas passage, and cinclides is an air duct, and dilution ratio is a sample channel and the ratio in air duct cross section.The gas film tripping device can be hollow cellulose, dull and stereotyped ventilated membrane, tubular microporous breathable film or fine monofilament boundling, and the aperture is at 50～5000A, and porosity is between 10～70%.Total system is linked in sequence by air distributing device 1, sampling pump 2, pressure maintaining valve 3, gas film separation vessel 4, filtrator 5, carbon monoxide transducer 6.Filtration unit 5 can be made into one with gas film tripping device 4, is about to medium and is packed in the membrane separation device 4, and medium can be activated charcoal, charcoal felt, carbon fiber and fabric.Medium also can be through the salpeter solution digestion, carries out pyroprocessing under nitrogen and the carbon dioxide atmosphere protection, below by implementing to be described in detail the present invention.
Accompanying drawing 1 is an electric chemical formula CO working sensor schematic diagram;
Accompanying drawing 2 (a) is a hollow fiber bundle formula gas film separation vessel synoptic diagram;
(b) be tubular micropore membrane type gas film separation vessel synoptic diagram;
(c) be dull and stereotyped membrane type gas film separation vessel synoptic diagram;
Accompanying drawing 3 is a distribution process flow diagram provided by the invention;
Accompanying drawing 4 is air dilution air distributing device;
Accompanying drawing 5 is a kapillary current limliting method distribution process flow diagram.
Example one
Distribution flow process such as Fig. 3.Dilution ratio is 1: 20, and the core pipe sample channel internal diameter of gas dilution device is φ 0.3mm, and the outer tube wall air duct is φ 0.6mm * 5 holes.Sampling pump adopts 6V direct current 1200rpm, and flow control is at 200mlm
-1, the gas film separation vessel is that the employing external diameter is 8mm, and long 80mm, tube wall are the micropore ceramics cast film of 0.5mm, and the membrane micropore footpath is below 0.5 μ.Carbon fiber bundle through 1200 ℃ of carbonization treatment is housed in the pipe.The carbon monoxide content result in the artificial cigarette smoke of gathering of employing electric chemical formula carbon monoxide sensing assays and the analysis result of vapor-phase chromatography see Table one.
Example two
Distribution flow process such as Fig. 3.Dilution ratio is 1: 20, and the core pipe sample channel internal diameter of gas dilution device is φ 0.3mm, and the outer tube wall air duct is φ 0.6mm * 5 holes.Sampling pump adopts the 6V direct current, 1200rpm, and flow control is at 200mlm
-1The gas film separation vessel is to add activated charcoal structure, long 80mm, diameter phi 8mm in the filament tow.The analysis result of the Britain Flltrona-AT302 of the Fei Erteluona company type carbon monoxide automatic measuring instrument of the result of carbon monoxide content and tobacco standardization quality supervision inspection center of China Tobacco Corporation all shows table two in the cigarette smoke that the electric chemical formula carbon monoxide transducer analysis Britain Flltronag of Fei Erteluona company passage 302 type smoking machines are collected.
Example three
Adopt electric chemical formula carbon monoxide transducer of the present invention, example one condition and the electric chemical formula carbon monoxide transducer (according to Fig. 5 flow process) that adopts kapillary 9 current limliting methods, the carbon monoxide content result compares respectively at table one and table three with the gc analysis value in the artificial cigarette smoke of gathering of analysis.From comparing result, find, the result's consistent with the gc analysis value (seeing Table one) who adopts electric chemical formula carbon monoxide transducer of the present invention to analyze, and the result of the result of the electric chemical formula carbon monoxide transducer analysis of employing kapillary current limliting method and chromatography analysis differ greatly (seeing Table three).This is because after cigarette smoke process Fig. 5 flow processing, though removed impurity such as olefines, aldehydes, still have small amount of H
2When the flue gas flow kapillary arrives sensor electroplax surface, because H
2Rate of diffusion greater than CO rate of diffusion, H
2Being enriched in electrode surface (is H
2Content increases), thus the interference that CO is analyzed strengthened.
The present invention makes the electric chemical formula carbon monoxide transducer be successfully used to contain hydrogen, olefines and aldehydes etc. and disturbs the CO gas of gas to detect, enlarged the range of application of electric chemical formula carbon monoxide transducer.The present invention makes the electric chemical formula carbon monoxide transducer be successfully used to the mensuration of cigarette smoke carbon monoxide content, can substitute and cost an arm and a leg the infrared ray carbonyl analyzer of service condition harshness.
Table one
Cigarette cigarette board chromatography CO sensor relative error
CO% H
2% CO% σ%
A Shi agate 3.52 1.26 3.53 0.28
Camellia 3.91 1.56 3.95 1.02
Trip friend 4.30 4.27 0.74
Beijing 3.52 1.35 3.56 1.13
Table two
Smoking passage # infrared spectrum analyser COmg/ props up CO sensor COmg/ and props up relative error σ %
C
121.8 22.1 1.4
C
221.3 20.7 -2.9
C
322.0 22.1 0.45
*
C
422.2 21.1 -5.2
C
521.9 21.3 -2.8
C
621.6 21.0 -1.9
C
722.5 22.0 -2.3
C
820.8 20.7 -0.48
Table three
Cigarette cigarette board chromatography CO sensor relative error
Three arrows 2.1% 5.11% 142%
Three arrows 3.17% 5.87% 85%
Three arrows 1.70% 2.65% 55.8%
Three arrows 2.8% 5.4% 92.8%
Claims (6)
1, the measuring method of carbon monoxide content in a kind of cigarette smoke comprises with filtration unit and removes organic impurities and finally send into and step such as measure in the electric chemical formula carbon monoxide transducer, it is characterized in that also including following steps:
With the gas film tripping device hydrogen in the cigarette smoke is removed;
With air dilution air distributing device the carbonomonoxide concentration in the flue gas is diluted to the PPm level.
2, a kind of measuring system with carbon monoxide content in the claim 1 method measurement flue gas includes sampling pump, pressure maintaining valve, filtration unit and electric chemical formula carbon monoxide transducer, it is characterized in that:
Also include gas film tripping device and air dilution air distributing device;
Described air distributing device is formed by core pipe and the pertusate outer tube suit of sidewall, and the core pipe is the sample gas passage, and cinclides is an air duct, and dilution ratio is a sample channel and the ratio in air duct cross section;
Total system is pressed air distributing device, being linked in sequence of sampling pump, pressure maintaining valve, gas film separation vessel, filtrator, carbon monoxide transducer.
3, by the described measuring system of claim 2, it is characterized in that described gas film tripping device can be hollow fiber bundle, dull and stereotyped ventilated membrane, tubular microporous breathable film or fine monofilament boundling, the aperture is 50～5000
, porosity is between 10～70%.
4, by the described measuring system of claim 3, it is characterized in that and filtration unit and gas film tripping device can be made one, be about to medium and be packed in the membrane separation device.
5, by claim 3,4 described measuring systems, it is characterized in that the medium in the described filtration unit can be activated charcoal, charcoal felt, carbon fiber and fabric.
6, by the described measuring system of claim 5, it is characterized in that described medium through the salpeter solution digestion, nitrogen and CO 2 gas-shielded under pyroprocessing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92111886A CN1038615C (en) | 1992-11-24 | 1992-11-24 | Method and device for measuring carbon monoxide content of cigarette smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92111886A CN1038615C (en) | 1992-11-24 | 1992-11-24 | Method and device for measuring carbon monoxide content of cigarette smoke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1087427A true CN1087427A (en) | 1994-06-01 |
| CN1038615C CN1038615C (en) | 1998-06-03 |
Family
ID=4945589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92111886A Expired - Fee Related CN1038615C (en) | 1992-11-24 | 1992-11-24 | Method and device for measuring carbon monoxide content of cigarette smoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038615C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196736A (en) * | 2013-04-16 | 2013-07-10 | 江苏中烟工业有限责任公司 | Puff-by-puff measuring method for carbon monoxide in main stream smoke of cigarette and special device thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2507099B2 (en) * | 1989-11-20 | 1996-06-12 | 松下精工株式会社 | Carbon dioxide concentration detector |
-
1992
- 1992-11-24 CN CN92111886A patent/CN1038615C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196736A (en) * | 2013-04-16 | 2013-07-10 | 江苏中烟工业有限责任公司 | Puff-by-puff measuring method for carbon monoxide in main stream smoke of cigarette and special device thereof |
| CN103196736B (en) * | 2013-04-16 | 2015-09-09 | 江苏中烟工业有限责任公司 | Carbon monoxide by mouth assay method and special purpose device thereof in a kind of cigarette mainstream flue gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038615C (en) | 1998-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mosier et al. | Gas chromatographic system for precise, rapid analysis of nitrous oxide | |
| Levin et al. | Determination of sub-part-per-million levels of formaldehyde in air using active or passive sampling on 2, 4-dinitrophenylhydrazine-coated glass fiber filters and high-performance liquid chromatography | |
| US3830630A (en) | Apparatus and method for alcoholic breath and other gas analysis | |
| Hakala et al. | Selective determination of toxicologically important arsenic species in urine by high-performance liquid chromatography–hydride generation atomic absorption spectrometry | |
| US3659100A (en) | System and method of air pollution monitoring utilizing chemiluminescence reactions | |
| Bruner et al. | Improved gas-chromatographic method for the determination of sulfur compounds at the ppb level in air | |
| EP3168605A1 (en) | Buffer system and method of using the buffer system to measure total alkaloid in tobacco or tobacco products through continuous flow | |
| CN102183478A (en) | Method for determining hydrogen sulfide in gaseous phase of main stream smoke of cigarette | |
| CN102156103B (en) | Determination method for indirectly measuring sulfureted hydrogen in mainstream smoke gas phase of cigarette by copper color method | |
| CN113899822A (en) | Method for determining purity of lithium hexafluorophosphate based on ion chromatography technology | |
| CN109632402A (en) | A kind of novel thermal desorption adsorption tube | |
| CN106771299A (en) | Determine the gas sample injection device and its application system of stationary source total organic carbon | |
| CN1152860A (en) | Flood gas probe | |
| Patil et al. | Determination of benzene, aniline and nitrobenzene in workplace air: a comparison of active and passive sampling | |
| Gage et al. | A method for the determination of low concentrations of organic vapours in air and exhaled breath | |
| CN1087427A (en) | The measuring method of carbon monoxide content and device in the cigarette smoke | |
| Christensen et al. | Determination of acetaldehyde in human blood by a gas chromatographie method with negligible artefactual acetaldehyde formation | |
| US4294583A (en) | Highly sensitive gas measuring method for the analysis of breath alcohol concentrations, using test tubes | |
| CN111983062B (en) | Method for detecting trace DMAEA in air | |
| Fowler et al. | Indirect determination of O-ethyl S-(2-diisopropylaminoethyl) methylphosphonothioate in air at low concentrations | |
| CN114062540A (en) | Method for rapidly measuring impurity gases of oxygen and argon in pure gas | |
| CN110514549A (en) | A kind of rapid detection method of ammonia acetylene mixing Gas content | |
| CN112986453B (en) | Method and system for high-resolution determination of organic carbon isotopes in stalagmite | |
| CN219144122U (en) | Ion mobility spectrometry device for detecting inorganic gas | |
| Liu et al. | Flow injection analysis of nitrogen dioxide using a galvanic detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |