CN204462095U - A kind of novel twin columns fast gas chromatograph for determination and analysis sample - Google Patents
A kind of novel twin columns fast gas chromatograph for determination and analysis sample Download PDFInfo
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- CN204462095U CN204462095U CN201520064692.6U CN201520064692U CN204462095U CN 204462095 U CN204462095 U CN 204462095U CN 201520064692 U CN201520064692 U CN 201520064692U CN 204462095 U CN204462095 U CN 204462095U
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- injector
- chromatograph
- capillary chromatograph
- breeches joint
- metal tube
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Abstract
The utility model discloses a kind of novel twin columns fast gas chromatograph for determination and analysis sample, comprise short capillary chromatograph, low thermal mass heating unit, constant temperature conductance cell, standard capillary chromatograph, breeches joint, mass detector, electric connection line, metal tube, power supply and thermopair; Constant temperature heat conduction pond, below low thermal mass heating unit, comprises the first injector and the second injector, short capillary chromatograph one termination first injector, and the other end connects breeches joint side by outlet after passing the import of metal tube; Entrance and exit is connected with the power supply being provided with temperature sensor in low thermal mass heating unit side respectively by electric connection line; One end of thermopair is connected with power supply, and the other end and metal tube touch to measure the thin chromatogram column temperature of undercoat; One end of standard capillary chromatograph is connected with the second injector, and the other end is connected with breeches joint opposite side; Short capillary chromatograph and standard capillary chromatograph enter mass detector through breeches joint.
Description
Technical field
The utility model relates to the gas chromatograph of determination and analysis environmental sample, particularly relates to the novel fast gas chromatograph of the twin columns for determination and analysis sample.
Background technology
Gas chromatograph (GC) is a center analysis technology, has a wide range of applications in environmental monitoring field; When being especially combined with mass spectrometer, its sensitivity, selectivity and sample identification ability can be improved.
But GC is as a powerful analysis tool, and the time cycle that traditional GC analyzes a sample is generally 30 ~ 60 minutes; In addition, be only limitted to detection that is stable and volatile compound with the gas chromatograph being provided with the routine that standard colour chart standard (being generally 30m) and standard column flow velocity (as 1ml/min) combine, and thermal instability compound may cannot make low voc compounds wash-out from capillary chromatograph owing to crossing thermal degradation.
Therefore, in view of standard GC analyzes length consuming time, when especially relating to twin columns sample detection, the structure of GC is comparatively complicated, need a kind of fast GC of the efficiency for improving determination and analysis badly, meanwhile, have and make the be rapidly heated structure of degree of heat and cooling effectiveness of chromatography column simply have the gas chromatograph of twin columns.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of novel twin columns fast gas chromatograph for determination and analysis sample, solves the inaccurate technical matters of judged result once can only entered simple sample and cause.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of novel twin columns fast gas chromatograph (GC) for determination and analysis sample, comprises short capillary chromatograph, low thermal mass heating unit, constant temperature conductance cell, standard capillary chromatograph, breeches joint, mass detector, electric connection line, metal tube, power supply and thermopair.
Constant temperature heat conduction pond is positioned at the below of low thermal mass heating unit, comprises the first injector and the second injector, and the second injector is positioned at the first injector side, and sample injects short capillary chromatograph to enter fast GC screening by the first injector; Short capillary chromatograph enters the metal tube of the low thermal mass heating unit being arranged in fast GC; Second injector is used for sample to inject the standard capillary chromatograph being positioned at constant temperature conductance cell inside, and one end of standard capillary chromatograph is connected with the second injector, and the other end is connected with the opposite side of breeches joint, and breeches joint has low dead volume; Short capillary chromatograph and standard capillary chromatograph are connected through breeches joint and enter mass detector, and mass detector preferentially selects ultrasound molecular number interface operation.
Low thermal mass heating unit is positioned at above constant temperature heat conduction pond, with the top that the first injector and the second injector interlock, one end of short capillary chromatograph connects the first injector, and entering diameter through the entrance of described metal tube is that its output terminal is connected to breeches joint side through described outlet after the round metal tube of 12cm; Entrance and exit is connected with power supply respectively by electric connection line, power supply is positioned at low thermal mass heating unit side, comprise a temperature sensor with feedback temperature, and the program of the electric current of power supply can be worked out to provide a temperature program(me), current value shows by temperature correction form.
One end of thermopair is connected with power supply, and the other end and metal tube touch the temperature measuring short capillary chromatograph.
The utility model is provided with two capillary chromatograph, the output terminal of two capillary chromatographs is connected with mass detector through the joint with low dead volume, can easily process from different two capillary columns simultaneously, there is the ion current of different in flow rate, and its sensitivity is unaffected, there is very strong practicality.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram.
Wherein: the first injector 21, short capillary chromatograph 22, air-cooled shell 23, constant temperature conductance cell 24, second injector 25, standard capillary chromatograph 26, breeches joint 27, detecting device 28, electric connection line 29, metal tube 30, entrance 31, outlet 32, power supply 33, thermopair 34.
Embodiment
Below in conjunction with the embodiment described by accompanying drawing, the utility model is described in further detail.
A novel twin columns fast gas chromatograph for determination and analysis sample, comprises short capillary chromatograph 22, low thermal mass heating unit 23, constant temperature conductance cell 24, standard capillary chromatograph 26, breeches joint 27, mass detector 28, electric connection line 29, metal tube 30, power supply 33 and thermopair 34.
Constant temperature conductance cell 24 is positioned at below low thermal mass heating unit 23, comprises the first injector 21 and the second injector 25, second injector 25 is positioned at the first injector 21 side, and sample injects short capillary chromatograph 22 to enter fast GC screening by the first injector 21; Short capillary chromatograph 22 enters the metal tube 30 of the low thermal mass heating unit 23 being positioned at fast GC; Second injector 25 is for injecting the standard capillary chromatograph 26 being positioned at constant temperature conductance cell 24 inside by sample, standard capillary chromatograph 26 one end is connected with the second injector 25, and the other end is connected to breeches joint 27 opposite side, and breeches joint 27 has low dead volume; Short capillary chromatograph 22 is connected with standard capillary chromatograph 26 and enters mass detector 28 by breeches joint 27, mass detector 28 preferentially selects ultrasound molecular number interface operation, EI ion gun can be leapt fast, mass detector can easily process from different two capillary columns simultaneously, there is the ion current of different in flow rate, and its sensitivity is unaffected.
Low thermal mass heating unit 23 is positioned at above constant temperature heat conduction pond 24, the top interlocked with the first injector 21 and the second injector 25, one end of short capillary chromatograph 22 connects the first injector 21, and entering diameter through described entrance 31 is that its output terminal is connected to the side of breeches joint 27 through described outlet 32 after the round metal tube 30 of 12cm; Entrance 31 is connected with power supply 33 respectively by electric connection line 29 with outlet 32, power supply 33 is positioned at low thermal mass heating unit 23 side, comprise a temperature sensor (depending on going out) with feedback temperature, and the program of the electric current of power supply 33 can be worked out to provide a temperature program(me), current value shows by temperature correction form.
One end of thermopair 34 is connected with power supply 33, and the other end and metal tube 30 touch the temperature measuring short capillary chromatograph 22.
Claims (1)
1. a novel twin columns fast gas chromatograph for determination and analysis sample, is characterized in that: comprise short capillary chromatograph, low thermal mass heating unit, constant temperature heat conduction pond, standard capillary chromatograph, breeches joint, mass detector, electric connection line, metal tube, power supply and thermopair;
Described constant temperature heat conduction pond is positioned at the below of low thermal mass heating unit, comprises the first injector and the second injector, and the second injector is positioned at the first injector side; Described metal tube is provided with entrance and exit, and entrance and exit parallel interval is arranged at constant temperature conductance cell coboundary;
Described short capillary chromatograph one end connects the first injector and injects short capillary chromatograph to make sample, and short capillary chromatograph is guided through entrance and enters in metal tube, and its output terminal is connected to breeches joint side through outlet, and it is inner that breeches joint is positioned at constant temperature heat conduction pond;
It is inner that described standard capillary chromatograph is positioned at constant temperature conductance cell, and one end of standard capillary chromatograph is connected with the second injector, and the other end of standard capillary chromatograph is connected with the opposite side of breeches joint;
Described short capillary chromatograph and standard capillary chromatograph are connected through breeches joint and enter self-existent mass detector;
Described entrance and exit is connected with power supply respectively by electric connection line;
One end of described thermopair is connected with power supply, and the other end and metal tube touch the temperature measuring short capillary chromatograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064692.6U CN204462095U (en) | 2015-01-29 | 2015-01-29 | A kind of novel twin columns fast gas chromatograph for determination and analysis sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064692.6U CN204462095U (en) | 2015-01-29 | 2015-01-29 | A kind of novel twin columns fast gas chromatograph for determination and analysis sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204462095U true CN204462095U (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520064692.6U Expired - Fee Related CN204462095U (en) | 2015-01-29 | 2015-01-29 | A kind of novel twin columns fast gas chromatograph for determination and analysis sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204462095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049663A (en) * | 2021-01-27 | 2021-06-29 | 中国科学院成都生物研究所 | Device for dumping one-dimensional wire sample and mass spectrometry and using method |
-
2015
- 2015-01-29 CN CN201520064692.6U patent/CN204462095U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049663A (en) * | 2021-01-27 | 2021-06-29 | 中国科学院成都生物研究所 | Device for dumping one-dimensional wire sample and mass spectrometry and using method |
| CN113049663B (en) * | 2021-01-27 | 2023-10-20 | 中国科学院成都生物研究所 | Device for dumping one-dimensional wire sample and analyzing mass spectrum and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20160129 |
|
| EXPY | Termination of patent right or utility model |