CA2026613A1 - Systeme pour la detection d'emission en infrarouge - Google Patents
Systeme pour la detection d'emission en infrarougeInfo
- Publication number
- CA2026613A1 CA2026613A1 CA002026613A CA2026613A CA2026613A1 CA 2026613 A1 CA2026613 A1 CA 2026613A1 CA 002026613 A CA002026613 A CA 002026613A CA 2026613 A CA2026613 A CA 2026613A CA 2026613 A1 CA2026613 A1 CA 2026613A1
- Authority
- CA
- Canada
- Prior art keywords
- interest
- infrared
- sample
- flame
- detector
- 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.)
- Abandoned
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 claims abstract description 127
- 239000000460 chlorine Substances 0.000 claims abstract description 117
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 95
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 70
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 68
- 229910001868 water Inorganic materials 0.000 claims abstract description 66
- 239000001257 hydrogen Substances 0.000 claims abstract description 57
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 57
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 230000003287 optical effect Effects 0.000 claims abstract description 35
- 230000009977 dual effect Effects 0.000 claims abstract description 29
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 18
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract 8
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 110
- 230000005855 radiation Effects 0.000 claims description 94
- 150000001875 compounds Chemical class 0.000 claims description 88
- 239000007789 gas Substances 0.000 claims description 87
- 230000004044 response Effects 0.000 claims description 68
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 47
- 238000002485 combustion reaction Methods 0.000 claims description 44
- 238000010926 purge Methods 0.000 claims description 38
- 238000002347 injection Methods 0.000 claims description 32
- 239000007924 injection Substances 0.000 claims description 32
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- 239000002253 acid Substances 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 230000003647 oxidation Effects 0.000 claims description 18
- 238000007254 oxidation reaction Methods 0.000 claims description 18
- 150000002500 ions Chemical class 0.000 claims description 16
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- 229930195733 hydrocarbon Natural products 0.000 claims description 12
- 150000002430 hydrocarbons Chemical class 0.000 claims description 12
- GGYFMLJDMAMTAB-UHFFFAOYSA-N selanylidenelead Chemical compound [Pb]=[Se] GGYFMLJDMAMTAB-UHFFFAOYSA-N 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000003153 chemical reaction reagent Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 claims description 6
- 239000012286 potassium permanganate Substances 0.000 claims description 6
- 230000008016 vaporization Effects 0.000 claims description 6
- 239000000356 contaminant Substances 0.000 claims description 5
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- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 229910000661 Mercury cadmium telluride Inorganic materials 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 3
- MCMSPRNYOJJPIZ-UHFFFAOYSA-N cadmium;mercury;tellurium Chemical compound [Cd]=[Te]=[Hg] MCMSPRNYOJJPIZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003295 industrial effluent Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
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- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 3
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 claims 1
- 238000006731 degradation reaction Methods 0.000 claims 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims 1
- 229910052753 mercury Inorganic materials 0.000 claims 1
- 239000012047 saturated solution Substances 0.000 claims 1
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 claims 1
- 238000009834 vaporization Methods 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 205
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 128
- 239000001569 carbon dioxide Substances 0.000 abstract description 81
- YBNMDCCMCLUHBL-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 4-pyren-1-ylbutanoate Chemical compound C=1C=C(C2=C34)C=CC3=CC=CC4=CC=C2C=1CCCC(=O)ON1C(=O)CCC1=O YBNMDCCMCLUHBL-UHFFFAOYSA-N 0.000 abstract description 27
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 60
- 239000003570 air Substances 0.000 description 52
- 239000000243 solution Substances 0.000 description 40
- 238000002474 experimental method Methods 0.000 description 37
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 36
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 36
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 36
- 239000012159 carrier gas Substances 0.000 description 34
- 230000009102 absorption Effects 0.000 description 33
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- 238000004458 analytical method Methods 0.000 description 30
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- 238000005259 measurement Methods 0.000 description 28
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 24
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 24
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 24
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 24
- 239000011737 fluorine Substances 0.000 description 24
- 229910052731 fluorine Inorganic materials 0.000 description 24
- 238000001228 spectrum Methods 0.000 description 23
- 235000011089 carbon dioxide Nutrition 0.000 description 22
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 21
- 238000011088 calibration curve Methods 0.000 description 21
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 20
- 239000007844 bleaching agent Substances 0.000 description 18
- 230000001965 increasing effect Effects 0.000 description 18
- 238000004448 titration Methods 0.000 description 18
- 230000006870 function Effects 0.000 description 17
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 17
- 230000003595 spectral effect Effects 0.000 description 15
- 238000000295 emission spectrum Methods 0.000 description 14
- 230000035945 sensitivity Effects 0.000 description 14
- 239000001307 helium Substances 0.000 description 12
- 229910052734 helium Inorganic materials 0.000 description 12
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 12
- 239000011780 sodium chloride Substances 0.000 description 12
- 241000894007 species Species 0.000 description 12
- 230000008901 benefit Effects 0.000 description 11
- 238000001816 cooling Methods 0.000 description 11
- 239000000446 fuel Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- 229950005499 carbon tetrachloride Drugs 0.000 description 10
- 230000001419 dependent effect Effects 0.000 description 10
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 10
- 229910001220 stainless steel Inorganic materials 0.000 description 10
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000001461 argentometric titration Methods 0.000 description 9
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- -1 C-M-HEX Chemical compound 0.000 description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 7
- 239000012267 brine Substances 0.000 description 7
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 7
- 230000000875 corresponding effect Effects 0.000 description 7
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- 239000006199 nebulizer Substances 0.000 description 7
- 239000011368 organic material Substances 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 238000011160 research Methods 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 7
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000013459 approach Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 6
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- 238000005755 formation reaction Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 239000010452 phosphate Substances 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
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- 238000009835 boiling Methods 0.000 description 4
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- 230000008859 change Effects 0.000 description 4
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- 150000001924 cycloalkanes Chemical class 0.000 description 4
- WJTCGQSWYFHTAC-UHFFFAOYSA-N cyclooctane Chemical compound C1CCCCCCC1 WJTCGQSWYFHTAC-UHFFFAOYSA-N 0.000 description 4
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- 239000003054 catalyst Substances 0.000 description 3
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- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 150000001722 carbon compounds Chemical class 0.000 description 2
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- ORMNPSYMZOGSSV-UHFFFAOYSA-N dinitrooxymercury Chemical compound [Hg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ORMNPSYMZOGSSV-UHFFFAOYSA-N 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
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- ZQBFAOFFOQMSGJ-UHFFFAOYSA-N hexafluorobenzene Chemical compound FC1=C(F)C(F)=C(F)C(F)=C1F ZQBFAOFFOQMSGJ-UHFFFAOYSA-N 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
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- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 1
- 229940012189 methyl orange Drugs 0.000 description 1
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- PYLWMHQQBFSUBP-UHFFFAOYSA-N monofluorobenzene Chemical compound FC1=CC=CC=C1 PYLWMHQQBFSUBP-UHFFFAOYSA-N 0.000 description 1
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- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
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- 239000010703 silicon Substances 0.000 description 1
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- 150000003385 sodium Chemical class 0.000 description 1
- SRRKNRDXURUMPP-UHFFFAOYSA-N sodium disulfide Chemical compound [Na+].[Na+].[S-][S-] SRRKNRDXURUMPP-UHFFFAOYSA-N 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- CMXPERZAMAQXSF-UHFFFAOYSA-M sodium;1,4-bis(2-ethylhexoxy)-1,4-dioxobutane-2-sulfonate;1,8-dihydroxyanthracene-9,10-dione Chemical compound [Na+].O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=CC=C2O.CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC CMXPERZAMAQXSF-UHFFFAOYSA-M 0.000 description 1
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- GZXOHHPYODFEGO-UHFFFAOYSA-N triglycine sulfate Chemical compound NCC(O)=O.NCC(O)=O.NCC(O)=O.OS(O)(=O)=O GZXOHHPYODFEGO-UHFFFAOYSA-N 0.000 description 1
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- 229940116269 uric acid Drugs 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/72—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flame burners
Landscapes
- Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US415,141 | 1989-09-29 | ||
| US07/415,141 US5246868A (en) | 1987-10-26 | 1989-09-29 | Infrared emission detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2026613A1 true CA2026613A1 (fr) | 1991-03-30 |
Family
ID=23644524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002026613A Abandoned CA2026613A1 (fr) | 1989-09-29 | 1990-10-01 | Systeme pour la detection d'emission en infrarouge |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0494266A4 (fr) |
| JP (1) | JPH05501008A (fr) |
| CA (1) | CA2026613A1 (fr) |
| WO (1) | WO1991005241A1 (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5473162A (en) * | 1987-10-26 | 1995-12-05 | Baylor University | Infrared emission detection of a gas |
| DE4231777C2 (de) * | 1992-09-23 | 1995-11-30 | Fraunhofer Ges Forschung | Verfahren zur spektralen Analyse einer eine Flackerfrequenz aufweisenden technischen Flamme durch optische Emissions- oder Absorptionsspektroskopie und Anordnung zur Durchführung des Verfahrens |
| GB9806555D0 (en) * | 1998-03-27 | 1998-05-27 | Secr Defence | Flame photometer detector |
| FR2799838A1 (fr) * | 1999-10-18 | 2001-04-20 | Centre Nat Rech Scient | Procede d'analyse et de dosage d'elements legers et appareillage pour sa mise en oeuvre |
| WO2012018344A1 (fr) | 2010-08-06 | 2012-02-09 | Avl North America Inc. | Système de mesure de particules |
| CN109300564B (zh) * | 2018-09-20 | 2022-11-18 | 中国辐射防护研究院 | 一种模拟蒸汽堵塞和腐蚀过滤器的装置和方法 |
| CN115791681B (zh) * | 2022-11-09 | 2024-06-18 | 招商局重庆交通科研设计院有限公司 | 沥青质量管控方法及系统 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3696247A (en) * | 1970-11-12 | 1972-10-03 | Lionel D Mcintosh | Vehicle exhaust emissions analyzer |
| US3723831A (en) * | 1970-12-04 | 1973-03-27 | Arco Corp | Indium antimonide infrared ray detector |
| GB1454362A (en) * | 1972-08-24 | 1976-11-03 | Anacon Inc | Molecular emission cavity analysis |
| DE2823410A1 (de) * | 1978-04-25 | 1979-11-08 | Cerberus Ag | Flammenmelder |
| US4466943A (en) * | 1979-11-28 | 1984-08-21 | Nissan Motor Co., Ltd. | Flame photometric detector analyzer |
| US4311485A (en) * | 1980-12-23 | 1982-01-19 | E. I. Du Pont De Nemours And Company | Method and apparatus for photometrically monitoring the concentrations of both chlorine and chlorine dioxide |
-
1990
- 1990-10-01 WO PCT/US1990/005591 patent/WO1991005241A1/fr not_active Ceased
- 1990-10-01 JP JP2514976A patent/JPH05501008A/ja active Pending
- 1990-10-01 EP EP19900915999 patent/EP0494266A4/en not_active Withdrawn
- 1990-10-01 CA CA002026613A patent/CA2026613A1/fr not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO1991005241A1 (fr) | 1991-04-18 |
| EP0494266A1 (fr) | 1992-07-15 |
| EP0494266A4 (en) | 1992-12-09 |
| JPH05501008A (ja) | 1993-02-25 |
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