GB949067A - Dual column gas chromatograph and method for analysis - Google Patents
Dual column gas chromatograph and method for analysisInfo
- Publication number
- GB949067A GB949067A GB44390/60A GB4439060A GB949067A GB 949067 A GB949067 A GB 949067A GB 44390/60 A GB44390/60 A GB 44390/60A GB 4439060 A GB4439060 A GB 4439060A GB 949067 A GB949067 A GB 949067A
- Authority
- GB
- United Kingdom
- Prior art keywords
- column
- detector
- carrier gas
- flow
- ports
- 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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/38—Flow patterns
- G01N30/46—Flow patterns using more than one column
- G01N30/468—Flow patterns using more than one column involving switching between different column configurations
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
A process for analysing a sample by gas chromatography uses a first and a second column in conjunction with a carrier gas inlet, a detector and a vent line, and includes the steps of: directing the flow of carrier gas through the first column, the second column and the detector in that sequence, and then injecting a sample into the stream of carrier gas ahead of the first column and continuing passing the carrier gas until the lower boiling constituents of the sample have been eluted from the first column and have entered the second column, and then changing the pattern of flow so that the carrier gas is directed through the first and second columns and the detector in a different sequence and optionally different direction, the flow through the detector occurring after the flow through at least one of the columns. A modification of the process includes the use of two detectors and a further switch valve. The change of flow pattern is effected in an apparatus comprising a valve having a body provided with six ports for connecting the various elements of the device including inter alia two columns and a detector or detectors, combined with co-operating movable, e.g. rotary, member having six ports coupled in pairs by passages, the ports in the two members being angularly so spaced that in each position of adjustment the ports of the two members will register with each other. The invention is described with reference to diagrams which also show the use of a six port valve adapted for use as a constant volume sampling valve.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US190A US3112639A (en) | 1960-01-04 | 1960-01-04 | Dual column gas chromatograph and method for analysis |
Publications (1)
Publication Number | Publication Date |
---|---|
GB949067A true GB949067A (en) | 1964-02-12 |
Family
ID=21690323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB44390/60A Expired GB949067A (en) | 1960-01-04 | 1960-12-28 | Dual column gas chromatograph and method for analysis |
Country Status (2)
Country | Link |
---|---|
US (1) | US3112639A (en) |
GB (1) | GB949067A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0003617A1 (en) * | 1978-02-14 | 1979-08-22 | Siemens Aktiengesellschaft | Commutation device comprising a branching between two gas chromatographic columns |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3206968A (en) * | 1961-03-10 | 1965-09-21 | Leggoe | Gas chromatography |
US3220164A (en) * | 1962-07-18 | 1965-11-30 | Perkin Elmer Corp | Recirculation chromatography |
US3304159A (en) * | 1963-01-28 | 1967-02-14 | Hewlett Packard Co | Gas chromatographic analysis method for c, h, and n content in solid organic compounds |
US3330150A (en) * | 1963-11-20 | 1967-07-11 | Phillips Petroleum Co | Chromatographic analysis process |
US3447360A (en) * | 1965-07-26 | 1969-06-03 | Independent Exploration Co Of | Method of and apparatus for exploring for deposits of helium and detection of helium in gaseous mixtures |
US3916465A (en) * | 1972-10-26 | 1975-11-04 | Hooker Chemicals Plastics Corp | Multi-stream gas chromatographic method and apparatus |
US3800602A (en) * | 1972-10-26 | 1974-04-02 | Hooker Chemical Corp | Multi-stream gas chromatographic method and apparatus |
US4007626A (en) * | 1975-04-18 | 1977-02-15 | Phillips Petroleum Company | Chromatographic analysis |
US4287752A (en) * | 1979-08-03 | 1981-09-08 | Standard Oil Co. (Indiana) | Apparatus and method for analyzing the hydrocarbon type composition of gasoline |
US4588422A (en) * | 1983-12-07 | 1986-05-13 | Elf France | Process and equipment for sampling a gaseous effluent and their application to chromatography |
US5392634A (en) * | 1992-08-27 | 1995-02-28 | Horiba, Ltd. | Hydrocarbon analyzer and method of analyzing hydrocarbon |
US5498279A (en) * | 1994-05-13 | 1996-03-12 | Chromatofast | High speed gas chromatography system for analysis of polar organic compounds |
US5637787A (en) * | 1994-05-31 | 1997-06-10 | Shimadzu Corporation | Gas chromatograph |
US5707150A (en) * | 1995-09-19 | 1998-01-13 | Rosemount Analytical Inc. | Apparatus for computing BTU content in a sample of gas |
US6465776B1 (en) | 2000-06-02 | 2002-10-15 | Board Of Regents, The University Of Texas System | Mass spectrometer apparatus for analyzing multiple fluid samples concurrently |
US8999245B2 (en) * | 2009-07-07 | 2015-04-07 | Tricorn Tech Corporation | Cascaded gas chromatographs (CGCs) with individual temperature control and gas analysis systems using same |
US8707760B2 (en) | 2009-07-31 | 2014-04-29 | Tricorntech Corporation | Gas collection and analysis system with front-end and back-end pre-concentrators and moisture removal |
US8978444B2 (en) | 2010-04-23 | 2015-03-17 | Tricorn Tech Corporation | Gas analyte spectrum sharpening and separation with multi-dimensional micro-GC for gas chromatography analysis |
CN115372485B (en) * | 2021-05-18 | 2024-01-12 | 中国石油天然气股份有限公司 | Flame luminosity online detection method and system for content of sulfur-containing compounds in natural gas |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2833151A (en) * | 1954-04-09 | 1958-05-06 | Ici Ltd | Device for delivering measured quantities of gases or vapours |
USRE24876E (en) * | 1955-12-16 | 1960-09-27 | Multiple column chromatographic apparatus | |
US2757541A (en) * | 1956-02-27 | 1956-08-07 | Perkin Elmer Corp | Sampling apparatus |
US2981092A (en) * | 1957-11-25 | 1961-04-25 | Cons Electrodynamics Corp | Chromatographic sampling valve |
-
1960
- 1960-01-04 US US190A patent/US3112639A/en not_active Expired - Lifetime
- 1960-12-28 GB GB44390/60A patent/GB949067A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0003617A1 (en) * | 1978-02-14 | 1979-08-22 | Siemens Aktiengesellschaft | Commutation device comprising a branching between two gas chromatographic columns |
Also Published As
Publication number | Publication date |
---|---|
US3112639A (en) | 1963-12-03 |
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