CN103323545A - Comprehensive two-dimensional gas chromatography modulator - Google Patents
Comprehensive two-dimensional gas chromatography modulator Download PDFInfo
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- CN103323545A CN103323545A CN2013102138666A CN201310213866A CN103323545A CN 103323545 A CN103323545 A CN 103323545A CN 2013102138666 A CN2013102138666 A CN 2013102138666A CN 201310213866 A CN201310213866 A CN 201310213866A CN 103323545 A CN103323545 A CN 103323545A
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Abstract
The invention relates to a gas chromatography modulator, and discloses a comprehensive two-dimensional gas chromatography modulator which comprises a focus ring. The focus ring is equipped with a left port, a right port and a lower port. The left port is connected with a first cool air blow pipe, a first hot air blow pipe and a first chromatographic column respectively. The right port is connected with a second cool air blow pipe, a second hot air blow pipe and a second chromatographic column respectively. The lower port is connected with an air outlet pipe. A closed cannular chamber is arranged outside the focus ring. The cannular chamber is a stainless steel pipe. A small column box is arranged outside the cannular chamber. The high-precision comprehensive two-dimensional gas chromatography modulator does not affect the temperature control precision of a column oven, does not affect analytical errors, does not reduce the thermal desorption speed and the analytical sensitivity, and raises the analysis efficiency.
Description
Technical field
The present invention relates to the cold and hot modulator of a kind of gas chromatography, be specifically related to a kind of cold and hot modulator of comprehensive two dimensional gas chromatography with advantages such as high-resolution, high sensitivity, peak capacities.
Background technology
The multi-dimensional chromatograph isolation technics is the isolation technics that highest resolution can be provided up to now, its appearance is the once new leap of gas chromatographic technique, become the high efficiency technical that solves the complex system compartment analysis, and the comprehensive two dimensional gas chromatography technology becomes the efficient analysis method of complex compound day by day, but the cold and hot modulator of traditional comprehensive two dimensional gas chromatography has many defectives: at first, the gas of cold and hot ejection directly is diffused into has affected the temperature control of column oven control accuracy in the column oven, strengthened analytical error; The heated air of heat modulation is dispersed in equally and has reduced pyrolysis in the column oven and analyse speed and sensitivity for analysis; Often use one section of analytical column as focusing ring, although usability variation simple in structure.
Along with the high speed development of science and technology and improving constantly of industrial level, the comprehensive two dimensional gas chromatography technology is also extensively adopted by many industries and field, requirement to the comprehensive two dimensional gas chromatography modulator is also more and more higher, therefore, a kind of have can effectively focus on high sensitivity, favorable reproducibility, signal response is consistent, the dynamic monitoring wide ranges, and comprehensive two dimensional gas chromatography modulator easy and simple to handle becomes inexorable trend.
Summary of the invention
The purpose of this invention is to provide a kind of temperature control control accuracy that does not affect column oven, not impact analysis error does not reduce pyrolysis and analyses speed and sensitivity for analysis, improves the high precision comprehensive two dimensional gas chromatography modulator of analysis efficiency.
In order to achieve the above object, the present invention has following technical scheme:
A kind of comprehensive two dimensional gas chromatography modulator, comprise a focusing ring, described focusing ring is provided with left port, right output port and lower port, wherein, left port is connected with respectively that cold air is blown into pipeline one, hot gas is blown into pipeline one, chromatographic column one, right output port is connected with respectively that cold air is blown into pipeline two, hot gas is blown into pipeline two, and chromatographic column two, described lower port connect a gas vent pipeline.
Wherein, described focusing ring is hollow kapillary.
Wherein, described focusing ring is provided with the endless tube chamber of a closed outward, and described endless tube chamber is stainless-steel tube.
Wherein, the internal diameter of described endless tube chamber is slightly larger than the outer ring diameter of focusing ring.
Wherein, the outdoor pillar case that is provided with of described endless tube.
Wherein, described cold air is blown into pipeline one, hot gas and is blown into that pipeline one, cold air are blown into pipeline two, hot gas is blown into and is respectively equipped with independently solenoid valve on the pipeline two, be respectively solenoid valve one, solenoid valve two, solenoid valve three, solenoid valve four, wherein, described hot gas is blown into pipeline one, hot gas is blown into and also is provided with well heater on the pipeline two.
Owing to having taked above technical scheme, the invention has the advantages that:
1, the present invention is highly sensitive, favorable reproducibility, and signal response is consistent, the dynamic monitoring wide ranges.
2, endless tube indoorly passes into refrigeration, heats gas, and these gases are discharged the post case does not simultaneously affect the control of post case temperature outward.
3, the internal diameter of focusing ring and length all can design as required among the present invention, are damaged to be easy to change.
4, the present invention is easy and simple to handle, can supply different industries and area research librarian use.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of focusing ring of the present invention.
Wherein: 1, focusing ring 2, endless tube chamber 3, pillar case 4, chromatographic column 1, chromatographic column 26, post case 7, well heater 8, gas vent pipeline 9, solenoid valve 4 10, solenoid valve 1, solenoid valve 3 12, solenoid valve 2 13, hot gas are blown into pipeline 2 14, cold air and are blown into that pipeline 2 15, cold air are blown into pipeline 1, hot gas is blown into pipeline one
Embodiment
Such as Fig. 1, shown in 2, a kind of comprehensive two dimensional gas chromatography modulator of the present invention, comprise a focusing ring 1, focusing ring is an annular hollow kapillary, focusing ring is provided with left port, right output port and lower port, wherein, left port is connected with respectively cold air and is blown into pipeline 1, hot gas is blown into pipeline 1, chromatographic column 1, right output port is connected with respectively cold air and is blown into pipeline 2 14, hot gas is blown into pipeline 2 13, and chromatographic column 25, described lower port connect a gas vent pipeline 8, the focusing ring outer endless tube chamber 2 that is provided with a closed 1, this endless tube chamber is stainless-steel tube, and the internal diameter of endless tube chamber is slightly larger than the outer ring diameter of focusing ring, and endless tube chamber volume I realizes high-speed refrigeration, heat, improve sensitivity for analysis, in addition, can be provided with a pillar case 3 endless tube is outdoor, in the endless tube chamber is closed in.Convenient in order to control, be blown into pipeline 1, hot gas at cold air and be blown into that pipeline 1, cold air are blown into pipeline 2 14, hot gas is blown into pipeline 2 13 and is respectively equipped with independently solenoid valve, be respectively solenoid valve 1, solenoid valve 2 12, solenoid valve 3 11, solenoid valve 49, wherein, hot gas is blown into pipeline 1, hot gas is blown into and also is provided with well heater 8 on the pipeline 2 13.
Principle of work: solenoid valve 49 is opened refrigerant gas (such as CO
2) pass into cold air and be blown into pipeline 2 14 and enter the right half side of endless tube chamber 1, make hollow kapillary right side cold true fast, simultaneously solenoid valve 2 12 open make heated air be blown into pipeline 2 13 through hot gas to enter focusing ring 1 left half side, make its heating, the material that focuses on when making the back refrigeration is resolved rapidly and is entered gas chromatographic column 25 (Gas Chromatography, GC); In like manner in succession open just with rear electromagnetic valve 1, electromagnetism magnetic 3 11 so that amalyzing substances forms focusing-pyrolysis in focusing ring analyse-again focusing-the again pyrolysis circulation of analysing.
Claims (6)
1. comprehensive two dimensional gas chromatography modulator, it is characterized in that: comprise a focusing ring, described focusing ring is provided with left port, right output port and lower port, wherein, left port is connected with respectively that cold air is blown into pipeline one, hot gas is blown into pipeline one, chromatographic column one, right output port is connected with respectively that cold air is blown into pipeline two, hot gas is blown into pipeline two, and chromatographic column two, described lower port connect a gas vent pipeline.
2. a kind of comprehensive two dimensional gas chromatography modulator as claimed in claim 1, it is characterized in that: described focusing ring is a hollow kapillary.
3. a kind of comprehensive two dimensional gas chromatography modulator as claimed in claim 1, it is characterized in that: described focusing ring is provided with the endless tube chamber of a closed outward, and described endless tube chamber is stainless-steel tube.
4. a kind of comprehensive two dimensional gas chromatography modulator as claimed in claim 3 is characterized in that: the internal diameter of described endless tube chamber is slightly larger than the outer ring diameter of focusing ring.
5. a kind of comprehensive two dimensional gas chromatography modulator as claimed in claim 3 is characterized in that: the outdoor pillar case that is provided with of described endless tube.
6. a kind of comprehensive two dimensional gas chromatography modulator as claimed in claim 1, it is characterized in that: described cold air is blown into pipeline one, hot gas and is blown into that pipeline one, cold air are blown into pipeline two, hot gas is blown into and is respectively equipped with independently solenoid valve on the pipeline two, be respectively solenoid valve one, solenoid valve two, solenoid valve three, solenoid valve four, wherein, described hot gas is blown into pipeline one, hot gas is blown into and also is provided with well heater on the pipeline two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102138666A CN103323545A (en) | 2013-06-03 | 2013-06-03 | Comprehensive two-dimensional gas chromatography modulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102138666A CN103323545A (en) | 2013-06-03 | 2013-06-03 | Comprehensive two-dimensional gas chromatography modulator |
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| CN103323545A true CN103323545A (en) | 2013-09-25 |
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| CN2013102138666A Pending CN103323545A (en) | 2013-06-03 | 2013-06-03 | Comprehensive two-dimensional gas chromatography modulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441451A (en) * | 2019-08-07 | 2019-11-12 | 北京高斯匹克技术有限公司 | The cold focusing chromatography post case of high/low temperature |
| CN111579678A (en) * | 2020-05-29 | 2020-08-25 | 中国气象科学研究院 | Double-channel full-two-dimensional gas chromatography system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683930A (en) * | 2004-04-14 | 2005-10-19 | 中国科学院大连化学物理研究所 | Full two dimension gas phase chromatography modulator |
| CN203299178U (en) * | 2013-06-03 | 2013-11-20 | 北京东西分析仪器有限公司 | Comprehensive two-dimensional gas chromatography modulator |
-
2013
- 2013-06-03 CN CN2013102138666A patent/CN103323545A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683930A (en) * | 2004-04-14 | 2005-10-19 | 中国科学院大连化学物理研究所 | Full two dimension gas phase chromatography modulator |
| CN203299178U (en) * | 2013-06-03 | 2013-11-20 | 北京东西分析仪器有限公司 | Comprehensive two-dimensional gas chromatography modulator |
Non-Patent Citations (3)
| Title |
|---|
| E.MARIA KRISTENSON，ET AL: "Evaluation of modulators and electron-capture detectors for comprehensive two-dimensional GC of halogenated organic compounds", 《JOURNAL OF CHROMATOGRAPHY A》 * |
| MARK LIBARDONI，ET AL: "Electrically Heated, Air-Cooled Thermal Modulator and at-Column Heating for Comprehensive Two-Dimensional Gas Chromatography", 《ANALYTICAL CHEMISTRY》 * |
| X. XU，ET AL: "Comprehensive two-dimensional gas chromatography (GC×GC) measurements of volatile organic compounds in the atmosphere", 《ATMOS. CHEM. PHYS.》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441451A (en) * | 2019-08-07 | 2019-11-12 | 北京高斯匹克技术有限公司 | The cold focusing chromatography post case of high/low temperature |
| CN111579678A (en) * | 2020-05-29 | 2020-08-25 | 中国气象科学研究院 | Double-channel full-two-dimensional gas chromatography system |
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Application publication date: 20130925 |