GB1291724A - Improvements in or relating to apparatus for determining the presence of substances carried by a stream of carrier fluid - Google Patents
Improvements in or relating to apparatus for determining the presence of substances carried by a stream of carrier fluidInfo
- Publication number
- GB1291724A GB1291724A GB4258669A GB4258669A GB1291724A GB 1291724 A GB1291724 A GB 1291724A GB 4258669 A GB4258669 A GB 4258669A GB 4258669 A GB4258669 A GB 4258669A GB 1291724 A GB1291724 A GB 1291724A
- Authority
- GB
- United Kingdom
- Prior art keywords
- regulator
- detector
- column
- source
- pressure
- 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.)
- Expired
Links
Classifications
-
- 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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (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)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
1291724 Pressure regulating system for gas chromatography PYE Ltd 27 Aug 1969 42586/ 69 Heading B1X [Also in Division G3] In a gas chromatograph apparatus having a chromatographic column 5, a restrictor 7, a mass detector 9, a pressurised carrier gas source 1, and a device (not shown) for injecting into the column samples of gas to be analysed, the flow rate to the detector 9 is maintained constant, despite possible fluctuations within column 5, by means of two pressure regulators 3 and 11, with the latter regulator being connected to the source 1 either through line 12 or through line 13, or alternatively, being connected to a further carrier gas source 15. The regulators are so matched that the pressure at the. outlet of regulator 11 is less than that at the outlet of regulator 3, with the regulators being subsequently adjustable to ensure a constant pressure at the point P in the flow path to the detector. The restrictor 7 can take the form of a capillary tube, a porous metal block or sinter or a partition having a small hole therein. If instead of the mass detector 9, which could take the form of a flame ionisation detector, it is desired to use a concentration detector such as a katharometer (16, Fig 2, not shown), the column 5 is connected to the source through regulator 3 whilst the regulator connected to the point P is provided with an atmosphere vent (17) instead of being connected to a carrier gas source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4258669A GB1291724A (en) | 1969-08-27 | 1969-08-27 | Improvements in or relating to apparatus for determining the presence of substances carried by a stream of carrier fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4258669A GB1291724A (en) | 1969-08-27 | 1969-08-27 | Improvements in or relating to apparatus for determining the presence of substances carried by a stream of carrier fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1291724A true GB1291724A (en) | 1972-10-04 |
Family
ID=10425091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4258669A Expired GB1291724A (en) | 1969-08-27 | 1969-08-27 | Improvements in or relating to apparatus for determining the presence of substances carried by a stream of carrier fluid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1291724A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4766760A (en) * | 1987-11-03 | 1988-08-30 | Vsesojuzny Nauchno-Issledovatelsky I Konstruktorsky Istitute Khromatografii | Method of chromatographic analysis of a mixture of liquid substances and a gas chromatograph for carrying out the method |
| WO1990009585A1 (en) * | 1989-02-16 | 1990-08-23 | Siemens Aktiengesellschaft | Process and device for controlling the carrier gas pressure in a valveless separating column circuit in gas chromatography |
| FR2660084A1 (en) * | 1990-03-21 | 1991-09-27 | Gilson Med Electr | PRESSURE REGULATION SYSTEM IN A DETERMINED FLOW FLUID CIRCUIT, AND CHROMATOGRAPHER USING THE SAME. |
| CN1313823C (en) * | 2004-12-27 | 2007-05-02 | 天津大学 | Apparatus and process for improving detection sensitivity by modulating outlet pressure or flow of chromatographic column |
| US20100154511A1 (en) * | 2008-12-23 | 2010-06-24 | Gordon Lambertus | Apparatus and method for multi-dimensional gas chromatography |
-
1969
- 1969-08-27 GB GB4258669A patent/GB1291724A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4766760A (en) * | 1987-11-03 | 1988-08-30 | Vsesojuzny Nauchno-Issledovatelsky I Konstruktorsky Istitute Khromatografii | Method of chromatographic analysis of a mixture of liquid substances and a gas chromatograph for carrying out the method |
| WO1990009585A1 (en) * | 1989-02-16 | 1990-08-23 | Siemens Aktiengesellschaft | Process and device for controlling the carrier gas pressure in a valveless separating column circuit in gas chromatography |
| US5379629A (en) * | 1989-02-16 | 1995-01-10 | Siemens Aktiengesellschaft | Method and apparatus for regulating the carrier gas pressure for separation column arrangements in gas chromatography |
| FR2660084A1 (en) * | 1990-03-21 | 1991-09-27 | Gilson Med Electr | PRESSURE REGULATION SYSTEM IN A DETERMINED FLOW FLUID CIRCUIT, AND CHROMATOGRAPHER USING THE SAME. |
| WO1991014941A1 (en) * | 1990-03-21 | 1991-10-03 | Gilson Medical Electronics (France) | System for regulating the pressure in an open fluid circuit with a given flow rate |
| CN1313823C (en) * | 2004-12-27 | 2007-05-02 | 天津大学 | Apparatus and process for improving detection sensitivity by modulating outlet pressure or flow of chromatographic column |
| US20100154511A1 (en) * | 2008-12-23 | 2010-06-24 | Gordon Lambertus | Apparatus and method for multi-dimensional gas chromatography |
| US8613215B2 (en) * | 2008-12-23 | 2013-12-24 | Schlumberger Technology Corporation | Apparatus and method for multi-dimensional gas chromatography |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 48R | Reference inserted (sect. 8/1949) | ||
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |