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 fluid

Info

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
Application number
GB4258669A
Inventor
Adrian Stuart Mead
Frank Peter Speakman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pye Electronic Products Ltd
Original Assignee
Pye Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pye Ltd filed Critical Pye Ltd
Priority to GB4258669A priority Critical patent/GB1291724A/en
Publication of GB1291724A publication Critical patent/GB1291724A/en
Expired legal-status Critical Current

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.
GB4258669A 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 Expired GB1291724A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (8)

* Cited by examiner, † Cited by third party
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