GB990251A - Gas detector for a gas chromatograph - Google Patents

Gas detector for a gas chromatograph

Info

Publication number
GB990251A
GB990251A GB8220/62A GB822062A GB990251A GB 990251 A GB990251 A GB 990251A GB 8220/62 A GB8220/62 A GB 8220/62A GB 822062 A GB822062 A GB 822062A GB 990251 A GB990251 A GB 990251A
Authority
GB
United Kingdom
Prior art keywords
discharge
gas
sample
helium
electrodes
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
GB8220/62A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB990251A publication Critical patent/GB990251A/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
    • G01N30/62—Detectors specially adapted therefor
    • G01N30/64—Electrical detectors
    • G01N30/70—Electron capture detectors
    • 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
    • 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
    • G01N27/64—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 wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
    • G01N27/66—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 wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage

Abstract

990, 251. Gas analysis. KABUSHIKI KAISHA HITACHI SEISAKUSHO. March 2, 1962 [March 14, 1961], No. 8220/62. Heading G1N. [Also in Division H1] A gas chromatograph detector has an ionization chamber provided with electrodes 9, 10 and a discharge chamber provided with an electrode gap 14,15, means for supplying a sample gas to the ionization chamber, means for independently supplying helium or argon to the discharge chamber, and power sources connected to electrodes 9, 10 and to the discharge electrodes 14, 15, the arrangement being such that the helium or argon is subject to a discharge at the discharge gap and then joins the sample gas in the ionization chamber thereby supplying primary electrons. These electrons excite atoms of the argon carrier gas to ionise the sample, the ionisation current indicating the concentration of the sample. In another arrangement (Fig. 4) argon is again used as carrier gas for the sample and is supplied through hollow electrode 31, while helium is supplied to the discharge gap between electrodes 39, 40. Outlet 51, is connected to a gas flow meter. The production of a stable arc discharge in helium is discussed in the Specification. A discharge electrode spacing of less than 1. 5 mins is necessary. By varying the discharge voltage the sensitivity of the device may be adjusted.
GB8220/62A 1961-03-14 1962-03-02 Gas detector for a gas chromatograph Expired GB990251A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP826561 1961-03-14

Publications (1)

Publication Number Publication Date
GB990251A true GB990251A (en) 1965-04-28

Family

ID=11688309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8220/62A Expired GB990251A (en) 1961-03-14 1962-03-02 Gas detector for a gas chromatograph

Country Status (3)

Country Link
DE (1) DE1173701B (en)
GB (1) GB990251A (en)
NL (2) NL126159C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015159463A1 (en) * 2014-04-17 2015-10-22 株式会社島津製作所 Electron capture detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015159463A1 (en) * 2014-04-17 2015-10-22 株式会社島津製作所 Electron capture detector

Also Published As

Publication number Publication date
NL275467A (en)
NL126159C (en)
DE1173701B (en) 1964-07-09

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