CH625050A5 - Detector for gas analysis - Google Patents
Detector for gas analysis Download PDFInfo
- Publication number
- CH625050A5 CH625050A5 CH1478677A CH1478677A CH625050A5 CH 625050 A5 CH625050 A5 CH 625050A5 CH 1478677 A CH1478677 A CH 1478677A CH 1478677 A CH1478677 A CH 1478677A CH 625050 A5 CH625050 A5 CH 625050A5
- Authority
- CH
- Switzerland
- Prior art keywords
- inlet
- capillary
- gas
- liquid
- measuring cell
- Prior art date
Links
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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
-
- 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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
- G01N27/07—Construction of measuring vessels; Electrodes therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optical Measuring Cells (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
Die vorliegende Erfindung bezieht sich auf einen Detektor 55 stellten Detektor am unteren Ende 16 der Ablaufkapillare 15. The present invention relates to a detector 55 placed at the lower end 16 of the drain capillary 15.
für die Gasanalyse, z.B. die Gaschromatographie, in welchem Der restliche Wasserstrom, der längs der Aussenseite der Zu- for gas analysis, e.g. gas chromatography, in which the remaining water flow along the outside of the inlet
ein ionenbildende Substanzen enthaltendes Trägergas mit einer laufkapillare 10 fliesst, wird in einem Auffangrohr 17 gesam- a carrier gas containing ion-forming substances flows with a running capillary 10, is collected in a collecting tube 17
Flüssigkeit, z.B. Wasser, gemischt wird, ungelöstes Gas von der melt, welches den unteren Bereich des Mantelrohrs 4 umgibt, Liquid, e.g. Water, mixed, undissolved gas from the melt, which surrounds the lower region of the casing tube 4,
Flüssigkeit abgetrennt wird und die die zu bestimmenden Spe- mit der Zulauf kapillare 10 über eine Dichtung 18 verbunden ist zies enthaltende Flüssigkeit durch eine Messzelle strömt. Die 60 und mit einem Überlauf 19 für das gesammelte Wasser versehen Liquid is separated and the liquid to be determined is connected to the inlet capillary 10 via a seal 18 and contains liquid flowing through a measuring cell. The 60 and provided with an overflow 19 for the collected water
Erfindung hat die Aufgabe, einen Detektor dieser Art zu schaf- ist. Dadurch bildet sich für das untere, offene Ende des Mantel- Invention has the task of creating a detector of this type. This forms for the lower, open end of the jacket
fen, der mittels eines einfachen konstruktiven Aufbaus eine rohrs 4 ein Wasserverschluss, der das als Phasentrennraum die- fen, by means of a simple structural design, a tube 4, a water seal, which acts as a phase separation space.
vollständige Trennung der flüssigen von der gasförmigen Phase nende Innere des Mantelrohrs 4 von der Aussenatmosphäre des Gas-Flüssigkeits-Gemisches vor dem Eintritt der die zu be- trennt. Das Absorptionsrohr 1 und die Messzelle 13 mit der stimmenden Spezies enthaltenden Flüssigkeit in die Messzelle 65 Zulaufkapillare 10 und der Ablaufkapillare 15 können daher zu für konduktometrische oder amperometrische Messungen er- ihrer Reinigung leicht voneinander getrennt werden. Complete separation of the liquid inside of the jacket tube 4 from the gaseous phase from the outside atmosphere of the gas-liquid mixture before the entry of the one to be separated. The absorption tube 1 and the measuring cell 13 with the liquid containing the tuning species into the measuring cell 65 can therefore easily be separated from the inlet capillary 10 and the outlet capillary 15 for conductometric or amperometric measurements.
zielt. Die Strömungsgeschwindigkeit des Wassers in der Messzelle Erfindungsgemäss ist der Detektor dadurch gekennzeichnet, 13 wird durch Bemessung der Länge und des Innendurchmes- aims. The flow velocity of the water in the measuring cell. According to the invention, the detector is characterized in that 13 is determined by measuring the length and the inner
sers der Zulaufkapillare 10 und der Ablaufkapillare 15 festgelegt. Der Werkstoff, die Abmessungen und die Strömungsverhältnisse für die mobilen Phasen werden dem jeweiligen Verwendungszweck angepasst. sers the inlet capillary 10 and the outlet capillary 15 set. The material, the dimensions and the flow conditions for the mobile phases are adapted to the respective purpose.
Eine praktische Ausführungsform des dargestellten Detektors kann beispielsweise aus Glas bestehen. Der Innendurchmesser des Absorptionsrohres 1 und der Ablauf kapillare 15 beträgt 1 mm, der Innendurchmesser der Zulaufkapillare 10 beträgt 0,5 mm und die Länge des etwa 2 mm starken Ablaufsta- A practical embodiment of the detector shown can be made of glass, for example. The inner diameter of the absorption tube 1 and the outlet capillary 15 is 1 mm, the inner diameter of the inlet capillary 10 is 0.5 mm and the length of the approximately 2 mm thick outlet tube
3 625 050 3,625,050
bes 8 ist 5 bis 8 cm. In einem Anwendungsbeispiel betrug der in das Absorptionsrohr 1 eintretende Gasstrom 2 ml/min und der Wasserstrom 8 ml/min, wobei vom Wasserstrom die Hälfte durch die Messzelle 13 geleitet wurde. Das Absorptionsrohr 1 5 wurde auf einer Temperatur von 15 °C konstant gehalten, was auch für die Messzelle 13 erfolgen kann. Das Hauptanwendungsgebiet des vorliegenden Detektors liegt in der quantitativen Spurenanalyse flüchtiger Stoffe. bes 8 is 5 to 8 cm. In one application example, the gas flow entering the absorption tube 1 was 2 ml / min and the water flow 8 ml / min, half of the water flow being passed through the measuring cell 13. The absorption tube 15 was kept constant at a temperature of 15 ° C., which can also be done for the measuring cell 13. The main area of application of the present detector is the quantitative trace analysis of volatile substances.
C C.
1 Blatt Zeichnungen 1 sheet of drawings
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1478677A CH625050A5 (en) | 1977-12-02 | 1977-12-02 | Detector for gas analysis |
DE19782851761 DE2851761C3 (en) | 1977-12-02 | 1978-11-30 | Detector for gas analysis |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1478677A CH625050A5 (en) | 1977-12-02 | 1977-12-02 | Detector for gas analysis |
Publications (1)
Publication Number | Publication Date |
---|---|
CH625050A5 true CH625050A5 (en) | 1981-08-31 |
Family
ID=4403811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1478677A CH625050A5 (en) | 1977-12-02 | 1977-12-02 | Detector for gas analysis |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH625050A5 (en) |
DE (1) | DE2851761C3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3314578A1 (en) * | 1983-04-22 | 1984-10-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Method and detector for analysing gases and liquids |
EP0205043A3 (en) * | 1985-06-14 | 1990-10-10 | Siemens Aktiengesellschaft | Method and apparatus for measuring ammonia in a gaseous mixture |
-
1977
- 1977-12-02 CH CH1478677A patent/CH625050A5/en not_active IP Right Cessation
-
1978
- 1978-11-30 DE DE19782851761 patent/DE2851761C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2851761A1 (en) | 1979-06-07 |
DE2851761C3 (en) | 1980-09-04 |
DE2851761B2 (en) | 1980-01-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUE | Assignment |
Owner name: DR. OTTO PIRINGER |
|
PL | Patent ceased |