GB2010490A - Thermoionic Detector - Google Patents
Thermoionic DetectorInfo
- Publication number
- GB2010490A GB2010490A GB7848345A GB7848345A GB2010490A GB 2010490 A GB2010490 A GB 2010490A GB 7848345 A GB7848345 A GB 7848345A GB 7848345 A GB7848345 A GB 7848345A GB 2010490 A GB2010490 A GB 2010490A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reaction chamber
- detector
- temperature
- flameless
- anode
- 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
Links
- 239000000126 substance Substances 0.000 abstract 3
- 150000001339 alkali metal compounds Chemical class 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 125000005842 heteroatom Chemical group 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 229910017464 nitrogen compound Inorganic materials 0.000 abstract 1
- 150000002830 nitrogen compounds Chemical class 0.000 abstract 1
- 150000002894 organic compounds Chemical class 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Electrochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Apparatus for the selective detection of organic compounds containing hetero-atoms particularly of nitrogen compounds, comprises a flameless thermoionic detector. Sample substances passing through a reaction chamber 6, which is heated electrically e.g. by heater winding 7 to a temperature between 500 DEG and 700 DEG C, are heated and ionised with the co-operation of a selecting substance, preferably an alkali-metal compound. This selecting substance is located in a container 12, closed except for an outlet capillary tube, inside the reaction chamber 6 and is maintained at a temperature close to its melting point by the temperature prevailing in the reaction chamber. An elongate electrode 8 serves as an anode to receive the ions produced, the cathode of the electrode being the wall of the reaction chamber 6, or being formed as a cylinder adjacent to the wall. The electrical potential between anode and cathode amounts to less than 50V and acts also as the supply voltage for the electrical heating of the reaction chamber. The detector may be used as a flameless detector in gas- chromatographic testing devices. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772755990 DE2755990A1 (en) | 1977-12-15 | 1977-12-15 | THERMOIONIC DETECTOR |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2010490A true GB2010490A (en) | 1979-06-27 |
| GB2010490B GB2010490B (en) | 1982-05-26 |
Family
ID=6026246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7848345A Expired GB2010490B (en) | 1977-12-15 | 1978-12-13 | Thermoionic detector |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5494395A (en) |
| CH (1) | CH635435A5 (en) |
| DE (1) | DE2755990A1 (en) |
| FR (1) | FR2412072A1 (en) |
| GB (1) | GB2010490B (en) |
| IT (1) | IT1101373B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025293A1 (en) * | 1979-09-10 | 1981-03-18 | Westinghouse Electric Corporation | Alkali metal ionization detector with in-situ calibration capability |
| FR2622012A1 (en) * | 1985-06-11 | 1989-04-21 | Inst Elektroniki Im Arifo | PROCESS FOR CHROMATOGRAPHIC ORGANIC ANALYSIS AND DEVICE FOR CARRYING OUT SAID METHOD |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4839143A (en) * | 1985-02-15 | 1989-06-13 | Allied-Signal Inc. | Selective ionization of gas constituents using electrolytic reactions |
-
1977
- 1977-12-15 DE DE19772755990 patent/DE2755990A1/en active Pending
-
1978
- 1978-12-01 JP JP14898478A patent/JPS5494395A/en active Pending
- 1978-12-06 CH CH1244078A patent/CH635435A5/en not_active IP Right Cessation
- 1978-12-06 IT IT30573/78A patent/IT1101373B/en active
- 1978-12-12 FR FR7834906A patent/FR2412072A1/en not_active Withdrawn
- 1978-12-13 GB GB7848345A patent/GB2010490B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025293A1 (en) * | 1979-09-10 | 1981-03-18 | Westinghouse Electric Corporation | Alkali metal ionization detector with in-situ calibration capability |
| FR2622012A1 (en) * | 1985-06-11 | 1989-04-21 | Inst Elektroniki Im Arifo | PROCESS FOR CHROMATOGRAPHIC ORGANIC ANALYSIS AND DEVICE FOR CARRYING OUT SAID METHOD |
| GB2213268A (en) * | 1985-06-11 | 1989-08-09 | Inst Elektroniki Im U A Arifov | Analysis of organic compounds in chromatography |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2412072A1 (en) | 1979-07-13 |
| GB2010490B (en) | 1982-05-26 |
| IT1101373B (en) | 1985-09-28 |
| IT7830573A0 (en) | 1978-12-06 |
| DE2755990A1 (en) | 1979-06-21 |
| JPS5494395A (en) | 1979-07-26 |
| CH635435A5 (en) | 1983-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |