GB1055091A - Improvements in or relating to gas chromatography - Google Patents
Improvements in or relating to gas chromatographyInfo
- Publication number
- GB1055091A GB1055091A GB4686862A GB4686862A GB1055091A GB 1055091 A GB1055091 A GB 1055091A GB 4686862 A GB4686862 A GB 4686862A GB 4686862 A GB4686862 A GB 4686862A GB 1055091 A GB1055091 A GB 1055091A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- column
- block
- temperature
- equilibrator
- 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
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
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/12—Preparation by evaporation
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)
- Sampling And Sample Adjustment (AREA)
Abstract
1,055,091. Gas chromatography injector. NATURAL RUBBER PRODUCERS' RESEARCH ASSOCIATION. Dec. 6, 1963 [Dec. 12, 1962], No. 46868/62. Heading B1L. A method of introducing a sample for gas chromatography comprises injecting a liquid sample into a heated carrier gas stream whilst it is passing through a Venturi in a gassageway within a metal block which is maintained at a temperature above that of the column. The gas is then passed to a metal equilibrator tube which is in thermal contact with the block and with a heat sink operating at the temperature of the column. Thus all liquid is vaporized and the gas stream enters the column from the equilibrator at the column temperature. The metal block and heat sink may both be made of a high thermal conductivity material e.g. copper, copper alloy or aluminium. The heat sink may be constituted by the chromatography column or a metal block. The equilibrator tube may be lower thermal conductivity than the block e.g. stainless steel, and the tube surface may be at ambient temperature, thus ensuring a uniform temperature gradient along the tube. Alternatively the tube may be of high thermal conductivity e.g. copper, copper alloy or aluminium and the temperature gradient established by the dimensions of the tube and/or cooling the surface with a current of air. A heated brass block 1 has a passageway 2 in the form of a Venturi with a feeder passage 3 coming from a tube 4 having a serum cap 5 closing one end thereof. A by-pass 6 enables carrier gas from tube 7 to sweep all the sample out of tube 4. Secured to the block in good thermal contact is a stainless steel equilibrator tube 8 containing stainless steel gauze rings 9 which are supported by gauze discs 10. The outlet end of the stainless steel tube may be connected to one end of a thick-walled aluminium chromatography column which may be thermostatically controlled. The temperature difference between block and sink may be 10‹C. The vaporized sample is said to enter the column as a "square pulse".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4686862A GB1055091A (en) | 1962-12-12 | 1962-12-12 | Improvements in or relating to gas chromatography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4686862A GB1055091A (en) | 1962-12-12 | 1962-12-12 | Improvements in or relating to gas chromatography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1055091A true GB1055091A (en) | 1967-01-11 |
Family
ID=10442895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4686862A Expired GB1055091A (en) | 1962-12-12 | 1962-12-12 | Improvements in or relating to gas chromatography |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1055091A (en) |
-
1962
- 1962-12-12 GB GB4686862A patent/GB1055091A/en not_active Expired
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