FR2357895A1 - Detecteur par capture d'electrons du type cylindrique et asymetrique - Google Patents

Detecteur par capture d'electrons du type cylindrique et asymetrique

Info

Publication number
FR2357895A1
FR2357895A1 FR7705289A FR7705289A FR2357895A1 FR 2357895 A1 FR2357895 A1 FR 2357895A1 FR 7705289 A FR7705289 A FR 7705289A FR 7705289 A FR7705289 A FR 7705289A FR 2357895 A1 FR2357895 A1 FR 2357895A1
Authority
FR
France
Prior art keywords
ionization
volume
gas
collecting electrode
electrode
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.)
Granted
Application number
FR7705289A
Other languages
English (en)
Other versions
FR2357895B1 (fr
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of FR2357895A1 publication Critical patent/FR2357895A1/fr
Application granted granted Critical
Publication of FR2357895B1 publication Critical patent/FR2357895B1/fr
Granted 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

a. Détecteur par capture d'électrons. b. Il comprend une première électrode délimitant un volume d'ionisation, une électrode collectrice, des moyens d'admission d'un gaz à l'intérieur du volume d'ionisation, des moyens d'ionisation pour ioniser le gaz à l'intérieur du volume d'ionisation et des moyens de créer un champ électrique qui oblige les électrons libres créés dans le volume d'ionisation à se diriger vers l'électrode collectrice et il est caractérisé en ce que l'électrode collectrice est placée en dehors du volume d'ionisation, en ce que les moyens d'admission du gaz font passer le gaz loin de l'électrode collectrice, lesdites électrodes étant coaxiales et une extrémité de l'électrode collectrice étant séparée de l'extrémité en regard de la première électrode par une distance au plus égale à une distance maximum de séparation. c. Analyse chromatographique gazeuse et détection de fuite gazeuse.
FR7705289A 1976-02-27 1977-02-23 Detecteur par capture d'electrons du type cylindrique et asymetrique Granted FR2357895A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/662,064 US4063156A (en) 1976-02-27 1976-02-27 Assymetric cylinder electron capture detector

Publications (2)

Publication Number Publication Date
FR2357895A1 true FR2357895A1 (fr) 1978-02-03
FR2357895B1 FR2357895B1 (fr) 1982-01-15

Family

ID=24656245

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7705289A Granted FR2357895A1 (fr) 1976-02-27 1977-02-23 Detecteur par capture d'electrons du type cylindrique et asymetrique

Country Status (6)

Country Link
US (1) US4063156A (fr)
JP (1) JPS52110091A (fr)
CA (1) CA1087761A (fr)
DE (1) DE2705185C2 (fr)
FR (1) FR2357895A1 (fr)
GB (1) GB1577040A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2576104A1 (fr) * 1985-01-14 1986-07-18 Giravions Dorand Procede et dispositif pour la stabilisation des resultats de mesure fournis par un detecteur dit " a capture d'electrons " avec identification des anomalies affectant ce detecteur

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684807A (en) * 1983-08-11 1987-08-04 Varian Associates, Inc. Flow contoured electron capture detector cell
US4651008A (en) * 1983-08-11 1987-03-17 Varian Associates, Inc. Sample inlet system for an electron capture detector
US4567368A (en) * 1984-01-19 1986-01-28 Varian Associates, Inc. Bipolar pulsed electron capture detectors
GB8414311D0 (en) * 1984-06-05 1984-07-11 Lovelock J E Gas chromatography
GB8506788D0 (en) * 1985-03-15 1985-04-17 Secr Defence Thermal electron source
GB2183897B (en) * 1985-10-30 1990-07-11 Perkin Elmer Corp Ionization detectors for gas chromatography
US4873862A (en) * 1986-04-16 1989-10-17 The Perkin-Elmer Corporation Ionization detectors for gas chromatography
US4804846A (en) * 1987-12-04 1989-02-14 O. I. Corporation Photoionization detector for gas chromatography
US5293130A (en) * 1991-07-02 1994-03-08 Martin Marietta Energy Systems, Inc. Proportional counter device for detecting electronegative species in an air sample
GB9306556D0 (en) * 1993-03-30 1993-05-26 Enviro Systems Ltd Detector device
DE19627620C1 (de) * 1996-07-09 1997-11-13 Bruker Saxonia Analytik Gmbh Elektroneneinfangdetektor
US5739699A (en) * 1996-09-03 1998-04-14 Hewlett-Packard Company Method and apparatus for ion discrimination in an electron capture detector
US5760291A (en) * 1996-09-03 1998-06-02 Hewlett-Packard Co. Method and apparatus for mixing column effluent and make-up gas in an electron capture detector
US5804828A (en) * 1996-09-30 1998-09-08 Hewlett-Packard Company Method and apparatus for optimizing the sensitivity and linearity of an electron capture detector
US10488292B1 (en) 2014-10-16 2019-11-26 Leak Detection Technologies, Inc. Leak detection system
US9841344B2 (en) 2016-03-29 2017-12-12 Leak Detection Technologies, Inc. System and methods for monitoring leaks in underground storage tanks

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3417238A (en) * 1965-04-06 1968-12-17 Varian Associates Gas chromatographic detector utilizing radioactivity

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1070741A (en) * 1962-12-06 1967-06-01 Nat Res Dev Improvements in and relating to gas or vapour detectors
US3378725A (en) * 1964-04-15 1968-04-16 Beckman Instruments Inc Electron capture detector having separate ionization and sensing regions
US3478205A (en) * 1965-07-29 1969-11-11 Owens Illinois Inc Ionization detector electrode assembly and method of analyzing gas and vapor substances
US3445757A (en) * 1965-10-14 1969-05-20 Mc Donnell Douglas Corp Capillary ionization gas detector and analyzer using timed interval current fluctuations
GB1159494A (en) * 1966-12-12 1969-07-23 Edwards High Vacuum Int Ltd Ionisation Gauges
US3634754A (en) * 1969-06-23 1972-01-11 Shell Oil Co Method and apparatus for linearly measuring electron capture with an electron capture detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3417238A (en) * 1965-04-06 1968-12-17 Varian Associates Gas chromatographic detector utilizing radioactivity

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2576104A1 (fr) * 1985-01-14 1986-07-18 Giravions Dorand Procede et dispositif pour la stabilisation des resultats de mesure fournis par un detecteur dit " a capture d'electrons " avec identification des anomalies affectant ce detecteur
EP0188397A2 (fr) * 1985-01-14 1986-07-23 GIRAVIONS DORAND, Société dite: Procédé et dispositif d'analyse par un détecteur à capture d'électrons
EP0188397A3 (fr) * 1985-01-14 1987-05-13 GIRAVIONS DORAND, Société dite: Procédé et dispositif d'analyse par un détecteur à capture d'électrons

Also Published As

Publication number Publication date
DE2705185A1 (de) 1977-09-01
CA1087761A (fr) 1980-10-14
JPS6222098B2 (fr) 1987-05-15
JPS52110091A (en) 1977-09-14
DE2705185C2 (de) 1986-05-15
GB1577040A (en) 1980-10-15
FR2357895B1 (fr) 1982-01-15
US4063156A (en) 1977-12-13

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