WO1998007025A1 - Appareil et procede de chromatographie en phase gazeuse - Google Patents
Appareil et procede de chromatographie en phase gazeuse Download PDFInfo
- Publication number
- WO1998007025A1 WO1998007025A1 PCT/IB1997/000986 IB9700986W WO9807025A1 WO 1998007025 A1 WO1998007025 A1 WO 1998007025A1 IB 9700986 W IB9700986 W IB 9700986W WO 9807025 A1 WO9807025 A1 WO 9807025A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- detector
- hydrogen
- supplied
- gas
- products
- Prior art date
Links
Classifications
-
- 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
- G01N27/626—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 heat to ionise a gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N30/68—Flame ionisation detectors
Definitions
- the present invention relates to a gas chromatography apparatus comprising an injector for the introduction of products to be analyzed, a column for separating said products to be analyzed, a flame ionization type detector arranged to detect the products to be analyzed after their separation. in the separation column and a water electrolysis device.
- This invention also relates to a gas chromatography method in which the products to be analyzed are injected into an injector, the products to be analyzed are separated by entrainment using a carrier gas, in a product separation column, the products separated by means of a flame ionization type detector.
- the most commonly used chromatography devices today include a flame ionization detector known as F1D.
- F1D flame ionization detector
- This detector comprises a flame into which products to be analyzed are sent after their separation in a separation column, and electrodes placed at near the flame and arranged to measure the number of ions formed.
- the flame is supplied by a combustible gas, generally hydrogen, to which is added a make-up gas, such as nitrogen in the case where the separation column is a capillary tube, and an oxidizing gas such as air or oxygen.
- hydrogen used as combustible gas and oxygen used as gas oxidizer can be produced by electrolysis of water. In this case, oxygen and hydrogen are separated before being sent to the detector.
- chromatography device is notably described in the international application published under No. WO 93/16790. This device includes a hydrogen and oxygen generator produced by the electrolysis of water. Hydrogen and oxygen are separated and only hydrogen is used.
- oxygen is rarely used as an oxidizing gas because, when hydrogen and oxygen are combined, there is a risk of explosion.
- the present invention proposes to overcome these drawbacks by producing a particularly compact chromatography device, presenting less risk of explosion and relatively inexpensive.
- a chromatography apparatus as defined in the preamble and characterized in that it comprises means for supplying the detector at least with hydrogen and oxygen produced by the electrolysis device of the water, and in that the hydrogen and oxygen produced by this electrolysis device are not separated before being supplied to the detector.
- the detector is not supplied with air.
- the detector is not supplied with make-up gas.
- the detector is supplied with neither air nor make-up gas.
- the detector is advantageously supplied with a mixture of hydrogen and oxygen in stoichiometric proportion of the water.
- the aims of the invention are also achieved by a method as defined in the preamble and characterized in that the detector is supplied at least with hydrogen and oxygen produced by electrolysis of water, and by that we do not separate the hydrogen and oxygen produced before feeding the detector.
- the detector is not supplied with air.
- the detector is not supplied with make-up gas.
- the detector is supplied neither with air nor with make-up gas.
- the detector is supplied with a mixture of hydrogen and oxygen in stoichiometric proportion of the water.
- FIG. 1 illustrates a preferred embodiment of the apparatus according to the present invention
- FIG. 2a illustrates a first embodiment of a detector as used with the device of FIG. 1, and
- FIG. 2b illustrates a second embodiment of a detector of the flame ionization type, suitable for use with the device of FIG. 1.
- the apparatus 10 comprises an injector 11 for products to be analyzed, a separation column 12 of said products to be analyzed, a detector 13 of said products to be analyzed and a device 14 for producing combustion gases.
- the detector 13 is a flame ionization type detector in which the number of ions formed in the flame is measured by means of electrodes placed around it. This flame fed by the gas mixture coming from the device 14 for producing combustion gases.
- This device 14 comprises an electrolysis cell 15 containing distilled water or an aqueous solution of caustic soda (NaOH) or caustic potash (KOH), into which two electrodes 16, 17 immerse. These electrodes are supplied by a source electrical energy 18. Hydrogen and oxygen are formed at the electrodes and are transmitted without prior separation, by means 19 for supplying said detector with combustible gas, to a nozzle 21 constituting the cathode of the detector.
- the means 19 for supplying the detector with combustible gas comprise a channel 22 which transmits all of the gases produced to the detector.
- the quantity and pressure of gas can be adjusted by modulating the voltage supplied by the source of electrical energy 18.
- the proportion between hydrogen and oxygen is always the same and corresponds to the stoichiometric ratio of water.
- This channel 22 includes a flame arrestor device arranged to prevent the flame from causing the combustion or the explosion of the mixture of oxygen and hydrogen contained in the electrolysis cell.
- the channel 22 further comprises a cartridge 23 for drying and purifying the gas mixture produced by the electrolyte cell, this cartridge being arranged to remove water vapor and the hydrocarbons which may be contained in the gas mixture.
- the detector 13 receives in addition, a gas carrying the products in the separation column, this gas possibly being in particular hydrogen, helium or nitrogen.
- FIG. 2A illustrates in more detail part of the detector 13 as used in the apparatus according to the present invention.
- This detector comprises a sleeve 30 into which opens one end 31 of the separation column 12 of the products to be analyzed and on the other hand an end 32 of the channel 22.
- the mixed oxygen and hydrogen are burned at the detector output and form the flame.
- this detector does not necessarily use make-up gas such as nitrogen as is generally the case in conventional flame ionization detectors.
- This detector also does not use pressurized air as an oxidizing gas.
- FIG. 2B illustrates another embodiment of a detector used in an apparatus according to the present invention.
- This detector is similar to a conventional flame ionization detector and comprises a supply tube 40 for carrier gas, a supply tube 41 for combustible gas, a supply tube 42 for make-up gas and a tube for supply of oxidizing gas 43.
- This detector also includes a valve 44 disposed on the make-up gas supply tube and a valve 45 disposed on the oxidant gas supply tube.
- valves 44 and 45 By closing the two valves 44 and 45 and introducing the gas mixture produced by the electrolysis cell 15, the detector according to this embodiment operates in the same way as the detector as illustrated in the figure. 2. By opening one or both of valves 44 or 45, it is possible to add make-up gas and / or oxidizing gas and to use this detector similarly to a conventional flame ionization detector.
- the chromatography apparatus according to the present invention makes it possible to produce, in a particularly economical and safe manner, the gases used for the combustion of the flame of the flame ionization detector.
- This device can therefore also be made very compactly since all of the gases used by the detector are formed by electrolysis.
Landscapes
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97932972A EP0918988A1 (fr) | 1996-08-13 | 1997-08-12 | Appareil et procede de chromatographie en phase gazeuse |
AU43624/97A AU4362497A (en) | 1996-08-13 | 1997-08-12 | Apparatus and method for gas chromatography |
JP10509543A JP2000516713A (ja) | 1996-08-13 | 1997-08-12 | ガス・クロマトグラフィの装置と方法 |
CA002261860A CA2261860A1 (fr) | 1996-08-13 | 1997-08-12 | Appareil et procede de chromatographie en phase gazeuse |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9610315A FR2752459B1 (fr) | 1996-08-13 | 1996-08-13 | Appareil et procede de chromatographie en phase gazeuse |
FR96/10315 | 1996-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998007025A1 true WO1998007025A1 (fr) | 1998-02-19 |
Family
ID=9495130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB1997/000986 WO1998007025A1 (fr) | 1996-08-13 | 1997-08-12 | Appareil et procede de chromatographie en phase gazeuse |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0918988A1 (fr) |
JP (1) | JP2000516713A (fr) |
KR (1) | KR20000029874A (fr) |
CN (1) | CN1227633A (fr) |
AU (1) | AU4362497A (fr) |
CA (1) | CA2261860A1 (fr) |
FR (1) | FR2752459B1 (fr) |
RU (1) | RU99104917A (fr) |
WO (1) | WO1998007025A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999024829A1 (fr) * | 1997-11-10 | 1999-05-20 | Nguyen Huu Phuoc | Appareil et procede de chromatographie en phase gazeuse |
AT410144B (de) * | 1996-12-20 | 2003-02-25 | Messer Griesheim Gmbh | Gasgemisch für flammenionisationsdetektoren |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL139475A0 (en) * | 2000-11-05 | 2001-11-25 | Amirav Aviv | Method and sytem for gas chromatography |
FR2924222B1 (fr) | 2007-11-27 | 2009-11-13 | Air Liquide | Procede de delivrance de melanges de gaz pour un analyseur |
RU2591228C1 (ru) * | 2015-04-08 | 2016-07-20 | Николай Павлович Шоромов | Способ газовой хроматографии в условиях космического полёта |
CN108445143B (zh) * | 2018-06-08 | 2023-07-18 | 大连海洋大学 | 一种光催化分解水活性评价装置 |
US11906490B2 (en) | 2018-08-09 | 2024-02-20 | Kookmin University Industry Academy Cooperation Foundation | Micro gas chromatography system |
CN113917056B (zh) * | 2021-12-15 | 2022-05-13 | 常州磐诺仪器有限公司 | 一种超低能耗和物质消耗的氢火焰离子化检测器系统 |
CN114674968B (zh) * | 2022-01-19 | 2024-01-30 | 国网江苏省电力有限公司电力科学研究院 | 一种氢火焰离子化检测器的氢气源提供装置及方法 |
CN115469048B (zh) * | 2022-11-03 | 2023-09-01 | 广东铭沁环保科技有限公司 | 纯水电解供气的fid检验仪 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2991158A (en) * | 1957-11-20 | 1961-07-04 | Harley John | Apparatus for the analysis and/or detection of substances by gas chromatography |
US3661533A (en) * | 1969-09-22 | 1972-05-09 | Tracor | Adjustable apparatus for flame ionization and flame emission detection |
EP0417647A1 (fr) * | 1989-09-08 | 1991-03-20 | Packard Instrument Company, Inc. | Dispositif et procédé de production d'hydrogène et d'oxygène par dissociation électrolytique de l'eau |
US5052805A (en) * | 1990-09-12 | 1991-10-01 | Cms Research Corporation | Ventilation unit for a flame photometric detection device |
WO1993016790A1 (fr) * | 1992-02-28 | 1993-09-02 | The Dow Chemical Company | Appareil pour separations de fluide ayant pour base une membrane |
US5342494A (en) * | 1993-03-05 | 1994-08-30 | United Technologies Corporation | High purity hydrogen and oxygen production and apparatus therefor |
US5432095A (en) * | 1993-09-23 | 1995-07-11 | Forsberg; Kenneth E. | Partial permixing in flame-ionization detection |
-
1996
- 1996-08-13 FR FR9610315A patent/FR2752459B1/fr not_active Expired - Fee Related
-
1997
- 1997-08-12 WO PCT/IB1997/000986 patent/WO1998007025A1/fr not_active Application Discontinuation
- 1997-08-12 EP EP97932972A patent/EP0918988A1/fr not_active Withdrawn
- 1997-08-12 JP JP10509543A patent/JP2000516713A/ja active Pending
- 1997-08-12 RU RU99104917/28A patent/RU99104917A/ru not_active Application Discontinuation
- 1997-08-12 CA CA002261860A patent/CA2261860A1/fr not_active Abandoned
- 1997-08-12 KR KR1019997001042A patent/KR20000029874A/ko not_active Application Discontinuation
- 1997-08-12 CN CN97197243A patent/CN1227633A/zh active Pending
- 1997-08-12 AU AU43624/97A patent/AU4362497A/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2991158A (en) * | 1957-11-20 | 1961-07-04 | Harley John | Apparatus for the analysis and/or detection of substances by gas chromatography |
US3661533A (en) * | 1969-09-22 | 1972-05-09 | Tracor | Adjustable apparatus for flame ionization and flame emission detection |
EP0417647A1 (fr) * | 1989-09-08 | 1991-03-20 | Packard Instrument Company, Inc. | Dispositif et procédé de production d'hydrogène et d'oxygène par dissociation électrolytique de l'eau |
US5052805A (en) * | 1990-09-12 | 1991-10-01 | Cms Research Corporation | Ventilation unit for a flame photometric detection device |
WO1993016790A1 (fr) * | 1992-02-28 | 1993-09-02 | The Dow Chemical Company | Appareil pour separations de fluide ayant pour base une membrane |
US5342494A (en) * | 1993-03-05 | 1994-08-30 | United Technologies Corporation | High purity hydrogen and oxygen production and apparatus therefor |
US5432095A (en) * | 1993-09-23 | 1995-07-11 | Forsberg; Kenneth E. | Partial permixing in flame-ionization detection |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT410144B (de) * | 1996-12-20 | 2003-02-25 | Messer Griesheim Gmbh | Gasgemisch für flammenionisationsdetektoren |
WO1999024829A1 (fr) * | 1997-11-10 | 1999-05-20 | Nguyen Huu Phuoc | Appareil et procede de chromatographie en phase gazeuse |
Also Published As
Publication number | Publication date |
---|---|
FR2752459B1 (fr) | 1998-10-30 |
AU4362497A (en) | 1998-03-06 |
CA2261860A1 (fr) | 1998-02-19 |
EP0918988A1 (fr) | 1999-06-02 |
KR20000029874A (ko) | 2000-05-25 |
RU99104917A (ru) | 2001-01-20 |
JP2000516713A (ja) | 2000-12-12 |
FR2752459A1 (fr) | 1998-02-20 |
CN1227633A (zh) | 1999-09-01 |
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