CN202486109U - Trapping and releasing device used for improving central cutting technical characteristic of gas chromatography - Google Patents
Trapping and releasing device used for improving central cutting technical characteristic of gas chromatography Download PDFInfo
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- CN202486109U CN202486109U CN2011204699962U CN201120469996U CN202486109U CN 202486109 U CN202486109 U CN 202486109U CN 2011204699962 U CN2011204699962 U CN 2011204699962U CN 201120469996 U CN201120469996 U CN 201120469996U CN 202486109 U CN202486109 U CN 202486109U
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- central cutter
- releasing means
- gas chromatography
- capture
- control device
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Abstract
The utility model discloses a trapping and releasing device used for improving a central cutting technical characteristic of a gas chromatography. The device comprises a central cutter connected with a feed inlet, and a mass spectrum detector connected with the central cutter, wherein two chromatographic columns are separated from the central cutter, and a trapping and releasing device is arranged on one chromatographic column. The device further comprises a valve path control device, wherein the valve path control device is connected with the central cutter and the mass spectrum detector through a chromatograph connecting column, and the trapping and releasing device is arranged on the chromatographic column for connecting the central cutter and the valve path control device. The device has the advantages of less investment, small instrument modification, large instrument performance promotion, and capability of simultaneously analyzing chemical compositions, which are subjected to central cutting for many times, and realizing analysis through feeding at one time.
Description
Technical field
The utility model relates to the gas chromatography-mass spectrum field, is a kind of valve conversion equipment that is used to improve gas chromatography heartcut technical feature.
Background technology
Gas chromatography heartcut technology is to utilize the difference of two root chromatogram column polar forms, improves the separating power of complex system and the detection sensitivity of trace components thereof.General elder generation just separates by boiling point on first root chromatogram column of low polarity, chooses the set of segmentation that target compound belongs to through the heartcut technology, and second root chromatogram column in polarity separates again, in the hope of reaching the optimal separation effect.
At present; The commercial gas chromatograph-mass spectrometer (GCMS) device that is equipped with central cutter is as shown in Figure 1; This device include one connect injection port 1 central cutter 3, and one connect this central cutter 3 mass detector (MS) 6 with advance hydrogen flame detector (FID) 7 or nitrogen phosphorous detector (NPD) or other conventional detector (this type of detecting device can not carry out fast qualitative and obtain the mass spectrum ion figure of unknown compound compound).The shortcoming that the chromatogram heartcut technology of commercial gas chromatograph-mass spectrometer (GCMS) device exists is: isolated two root chromatogram columns 2,5 can only advance mass detector 6 by a root chromatogram column after the heartcut; Another root chromatogram column advances hydrogen flame detector (FID) 7 or nitrogen phosphorous detector (NPD) or other conventional detector through chromatogram joint pin 4, can not get into a mass detector analysis simultaneously.Even get into two mass spectral purposes respectively, but the expense that needs to increase a mass spectrum and develop new this function of software control by isolated two root chromatogram columns after increasing a mass detector and reaching heartcut.
The utility model content
To the problem that exists in the prior art, the purpose of the utility model is to provide a kind of capture and releasing means that is used to improve gas chromatography heartcut technical feature.This device have less investment, instrument change little, instrument performance promote big, can be with the advantage that repeatedly chemical constitution of heartcut is analyzed simultaneously, single injected sampling can reach analysis purpose.
For realizing above-mentioned purpose, the utility model technical scheme is:
A kind of capture and releasing means that is used to improve gas chromatography heartcut technical feature; This device includes the central cutter of a connection injection port; And the mass detector of this central cutter of connection; Central cutter is isolated two root chromatogram columns, in wherein on the root chromatogram column capture releasing means being installed.
Further, this device also comprises a valve road control device, and this valve road control device connects central cutter and mass detector through the chromatogram joint pin, and described capture releasing means is arranged on the chromatographic column that connects central cutter and valve road control device.
The usefulness of technique scheme is:
Utilize the capture and the releasing means of this gas chromatography heartcut technology to reach the chemical constitution that flows out by instrumentation personnel requirement trapping center cutting back; After the chemical constitution entering mass spectrophotometry detection etc. other root chromatogram column separation; Be discharged into mass spectrum again and further separate, avoided the isolated chemical constitution of two root chromatogram columns to overlap.Two root chromatogram columns after the gas chromatography heartcut all are connected on same the mass detector through valve road control device, and the isolated chemical constitution of two root chromatogram columns can be analyzed on same mass detector, carries out qualitative, quantitative.This device have less investment, instrument change little, instrument performance promote big, can be with the advantage that repeatedly chemical constitution of heartcut is analyzed simultaneously, single injected sampling can reach analysis purpose.
Description of drawings
Fig. 1 is a commercial gas chromatograph-mass spectrometer (GCMS) structural representation in the prior art;
Fig. 2 is the gas chromatograph-mass spectrometer (GCMS) structural representation that the utility model is equipped with capture and releasing means and valve road control device.
Embodiment
Combine accompanying drawing and embodiment that the utility model is described at present.
A kind of capture and releasing means that is used to improve gas chromatography heartcut technical feature as shown in Figure 2; This device includes the central cutter 3 of a connection injection port 1; And the mass detector 9 of this central cutter 3 of connection, central cutter 3 is isolated first root chromatogram column 2 and second root chromatogram column 6.The utility model is installed on second root chromatogram column 6 wherein the capture releasing means 5 that respectively chemical constitution that flows out after the heartcut is captured and discharges more than a group is installed.
This device comprises that also one connects first root chromatogram column 2 and the valve road control device 7 of second root chromatogram column 6 after the heartcut; Two root chromatogram columns all are connected on same the mass spectrum; The isolated chemical constitution of two root chromatogram columns can be analyzed on same mass detector, carries out qualitative, quantitative.This valve road control device 7 is connected central cutter 3 and mass detector 9 respectively through chromatogram joint pin I4 and chromatogram joint pin II7.Described capture releasing means 5 is arranged on second root chromatogram column 6 that connects central cutter 3 and valve road control device 7.
The capturing device that the utility model captures releasing means 5 be meant the direct device that the chemical constitution of outflow is captured with refrigerants such as liquid nitrogen, liquid CO 2, liquid ammonia, freon or with refrigerants such as liquid nitrogen, liquid CO 2, liquid ammonia, freon as gases such as heat eliminating medium cool nitrogen, helium, device that the chemical constitution that goes out with gaseous exchanges such as cooled nitrogen, helium again captures or electronics capturing device with cooling effect.
The releasing means that the utility model captures releasing means 5 is meant that the direct or indirect electronic heating apparatus that through heating after, the chemical constitution of outflow is carried out the device of snap-out release or have a heat effect with air, nitrogen, helium or other gas carries out the device of snap-out release to the chemical constitution of outflow.
The utility model capture releasing means 5 can carry out once or continuous several times captures, discharges the isolated chemical constitution of heartcut, further separates through other one or more chromatographic column then.Carry out once or continuous several times captures and when discharging the isolated chemical constitution of heartcut, in same capture, off-position, capture, discharge and carry out respectively, can not carry out simultaneously, capture and can set release time.
Embodiment one:
1) capture releasing means 5 at first is installed on isolated second root chromatogram column 6 after the gas chromatography heartcut.The capturing device that present embodiment captures in the releasing means 5 is to cool off high pure nitrogen with liquid nitrogen as heat eliminating medium; Be sprayed onto on second root chromatogram column 6 with cooled nitrogen the chemical constitution that flows out after the heartcut is captured, this device capture time can freely be set.With valve road control device 7 two root chromatogram columns 2,6 after the gas chromatography heartcut are connected on same the mass detector 9 simultaneously.
2) according to requirement of experiment needs are cut out the further composition that separates of needs then and import second root chromatogram column, open the chemical constitution that the capturing device that captures releasing means 5 captures outflow simultaneously; Other chemical constitutions that need not cut directly get into mass detector 9 through first root chromatogram column 2 and analyze also qualitative, quantitative.
3) after capture finishes; Deng the chemical constitution in first root chromatogram column 2 in mass detector 9, analyze finish after; Open the releasing means that captures releasing means 5; Directly air, nitrogen, helium or other gas purgings after the heating of electricity consumption heating module further separates the chemical constitution snap-out release that captures in second root chromatogram column 6, and the chemical constitution after the separation gets into mass detector 9 and carries out qualitative, quantitative.
Embodiment 2:
1) capture releasing means 5 at first is installed on isolated second root chromatogram column 6 after the gas chromatography heartcut.The capturing device that present embodiment captures in the releasing means 5 is to be imported by pipeline as heat eliminating medium with liquid nitrogen; Liquid nitrogen surrounds or around second root chromatogram column; Chemical constitution to flowing out after the heartcut is carried out cold-trap, and this device capture time can freely be set.With valve road control device 7 two root chromatogram columns 2,6 after the gas chromatography heartcut are connected on same the mass detector 9 simultaneously.
2) according to requirement of experiment needs are cut out the further composition that separates of needs then and import second root chromatogram column 6, open the chemical constitution that the capturing device that captures releasing means 5 captures outflow simultaneously; Other chemical constitutions that need not cut directly get into mass detector 9 through first root chromatogram column 2 and analyze also qualitative, quantitative;
3) after capture finishes; Deng the chemical constitution in first root chromatogram column 3 in mass detector 9, analyze finish after; Open the releasing means that captures releasing means 5; Directly air, nitrogen, helium or other gas purgings after the heating of electricity consumption heating module further separates the chemical constitution snap-out release that captures in second root chromatogram column, and the chemical constitution after the separation gets into mass detector 9 and carries out qualitative, quantitative.
Embodiment 3:
1) capture releasing means 5 at first is installed on isolated second root chromatogram column 6 after the gas chromatography heartcut.The capturing device that present embodiment captures in the releasing means 5 is that liquid nitrogen cools off high pure nitrogen as heat eliminating medium, is sprayed onto on the chromatographic column with cooled nitrogen the chemical constitution that flows out after the heartcut is captured again, and this device capture time can freely be set.With valve road control device 7 two root chromatogram columns 2,6 after the gas chromatography heartcut are connected on same the mass detector 9 simultaneously.
2) according to requirement of experiment needs are cut out the further composition that separates of needs then and import second root chromatogram column, open the chemical constitution that the capturing device that captures releasing means 5 captures outflow simultaneously; Other chemical constitutions that need not cut directly get into mass detector 9 through first root chromatogram column 2 and analyze also qualitative, quantitative;
3) after capture finishes; Deng the chemical constitution in first root chromatogram column 2 in mass detector 9, analyze finish after; Open the releasing means that captures releasing means 5; Directly electricity consumption heating module heating further separates the chemical constitution snap-out release that captures in second root chromatogram column, and the chemical constitution after the separation gets into mass detector 9 and carries out qualitative, quantitative.
Above-mentionedly be merely three specific embodiments of the present invention, but design concept of the present invention is not limited thereto, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (2)
1. be used to improve the capture and the releasing means of gas chromatography heartcut technical feature; It is characterized in that: this device includes the central cutter of a connection injection port; And the mass detector of this central cutter of connection; Central cutter is isolated two root chromatogram columns, it is characterized in that: in wherein on the root chromatogram column capture releasing means being installed.
2. capture and the releasing means that is used to improve gas chromatography heartcut technical feature as claimed in claim 1; It is characterized in that: also comprise a valve road control device; This valve road control device connects central cutter and mass detector through the chromatogram joint pin, and described capture releasing means is arranged on the chromatographic column that connects central cutter and valve road control device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204699962U CN202486109U (en) | 2011-11-23 | 2011-11-23 | Trapping and releasing device used for improving central cutting technical characteristic of gas chromatography |
| JP2012004910U JP3179280U (en) | 2011-11-23 | 2012-08-10 | Collection and release device for improving heart-cutting technology of gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204699962U CN202486109U (en) | 2011-11-23 | 2011-11-23 | Trapping and releasing device used for improving central cutting technical characteristic of gas chromatography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486109U true CN202486109U (en) | 2012-10-10 |
Family
ID=46960524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204699962U Expired - Lifetime CN202486109U (en) | 2011-11-23 | 2011-11-23 | Trapping and releasing device used for improving central cutting technical characteristic of gas chromatography |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3179280U (en) |
| CN (1) | CN202486109U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738535B (en) * | 2019-01-16 | 2024-06-11 | 广东省测试分析研究所（中国广州分析测试中心） | Multi-functional quick-switching multidimensional gas chromatography system |
-
2011
- 2011-11-23 CN CN2011204699962U patent/CN202486109U/en not_active Expired - Lifetime
-
2012
- 2012-08-10 JP JP2012004910U patent/JP3179280U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3179280U (en) | 2012-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |