CN209894764U - Gas chromatography-mass spectrometer - Google Patents
Gas chromatography-mass spectrometer Download PDFInfo
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- CN209894764U CN209894764U CN201920289339.6U CN201920289339U CN209894764U CN 209894764 U CN209894764 U CN 209894764U CN 201920289339 U CN201920289339 U CN 201920289339U CN 209894764 U CN209894764 U CN 209894764U
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Abstract
The utility model relates to a chromatography-mass spectrometry appearance field, aim at provides a gas chromatography-mass spectrometry appearance, including chromatograph, mass spectrograph and record appearance, chromatograph, mass spectrograph and record appearance distribute in proper order by a left side to the right side, the chromatograph includes the introduction port, the below of introduction port is provided with the condensation column cap, and the fixed chromatographic column that is provided with of one end that the introduction port was kept away from to the condensation column cap, the top of chromatographic column is provided with first detector, the mass spectrograph includes the carrier gas source, and one side of carrier gas source is provided with the vacuum cavity of intercommunication. The beneficial effects of the utility model reside in that can realize the recooling of solvent, improve the efficiency that gas carried to the chromatographic column, can effectually filter the impurity in the testing gas, guarantee the cleanliness factor of testing gas, improve the accuracy of testing result simultaneously, improve gas transmission pipeline's leakproofness, avoided appearing the condition of leaking in the gas detection process.
Description
Technical Field
The utility model relates to a chromatogram mass spectrum allies oneself with the appearance field, especially relates to a gas chromatography mass spectrum allies oneself with appearance.
Background
The gas chromatography-mass spectrometry (GC-MS) technology is characterized in that gas chromatography and mass spectrometry are directly connected, the gas chromatography and an interface are equivalent to a sample feeding system of the mass spectrometry, a mass spectrometer is used as a detector of the gas chromatography, and the gas chromatography-mass spectrometry solves two key problems of an instrument interface and a scanning speed. The technology separates the components in the mixture by utilizing the separation capability of gas chromatography, sequentially sends the components into an ion source of a mass spectrometer for ionization through an interface, and identifies the separated components (qualitative analysis) and content (quantitative analysis) by a mass spectrometer mass analyzer, thereby solving the problem of difficult chromatography qualitative determination by double qualitative determination of retention time and mass spectrogram and simultaneously improving the quantitative accuracy.
However, the existing gas chromatography-mass spectrometer has some disadvantages, such as impure carrier gas, unreasonable structure of sample feeding mode, easy overload phenomenon of chromatographic column, easy solvent focusing effect, weak stability of capillary tube, bad sealing property of interface position, and easy carrier gas leakage.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a gas chromatograph-mass spectrometer with good carrier gas treatment effect, reasonable sample introduction method and strong stability.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a gas chromatography mass spectrometer, includes chromatograph, mass spectrograph and record appearance, chromatograph, mass spectrograph and record appearance distribute by left side to right side in proper order, the chromatograph includes the introduction port, the below of introduction port is provided with the condensation column cap, and the fixed chromatographic column that is provided with of one end that the introduction port was kept away from to the condensation column cap, the top of chromatographic column is provided with first detector, the mass spectrograph includes the carrier gas source, and one side of carrier gas source is provided with the vacuum chamber of intercommunication, the one end that the carrier gas source was kept away from to the vacuum chamber is connected with the collision cell, one side of collision cell is provided with the dissociation chamber that sets up with the vacuum chamber symmetry, the exit end in dissociation chamber is provided with the second detector, be connected with the packing column on the carrier gas source, and the inside of packing column is provided with the glass bushing pipe, the top of glass bushing pipe is provided with the needle, the fixed cover of having connect O type circle on the outer wall of glass bushing pipe, and the outside of glass bushing pipe has cup jointed the outer tube, and it has the shock insulator that is linked together with the glass bushing pipe to open on one side outer wall of outer tube and sweeps the mouth, and the sealed pad that is made by graphite material that the bottom of glass bushing pipe is provided with the nut through setting up, the inside grafting in bottom of nut has capillary tubular column.
The key concept of the technical scheme is as follows: the condensation column cap arranged below the sample inlet can realize the re-cooling of the solvent, and improve the efficiency of conveying the gas to the chromatographic column; through the arranged filling column, impurities in the detection gas can be effectively filtered, the cleanliness of the detection gas is ensured, and meanwhile, the accuracy of a detection result is improved; the sealing gasket made of graphite material improves the sealing performance of the gas conveying pipeline, avoids the leakage in the gas detection process, and improves the accuracy of gas detection.
Further, form the connectivity structure through the connector between chromatograph and the mass spectrograph, and the external fixation of connector has cup jointed the heating piece.
Furthermore, the capillary column adopts a multi-hollow-layer open column, the outer surface of the capillary column is coated with a polyimide material, and the inner surface of the capillary column is chemically treated.
Furthermore, the O-shaped ring is in interference fit with the glass liner tube, and the O-shaped ring is made of soft rubber.
Furthermore, the condensation column cap is of a hollow structure, and the inner wall of the condensation column cap is provided with heat-insulating cotton attached to the inner wall.
The utility model has the advantages that: (1) the condensation column cap arranged below the sample inlet can realize the re-cooling of the solvent, and improve the efficiency of conveying the gas to the chromatographic column; (2) through the arranged filling column, impurities in the detection gas can be effectively filtered, the cleanliness of the detection gas is ensured, and meanwhile, the accuracy of a detection result is improved; (3) the sealing gasket made of graphite material improves the sealing performance of the gas conveying pipeline, avoids the leakage in the gas detection process and improves the accuracy of the gas detection; (4) by adopting the connector, the linkage work between the chromatograph and the mass spectrometer can be effectively realized, and the separation and detection of gas can be realized; (5) the capillary column designed by a special structure can lead the air to be stable through the capillary column, is not easy to break, and is suitable for analyzing the high-temperature condition.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of a chromatograph structure according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a mass spectrometer according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a packed column according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a connection head of a chromatograph and a mass spectrometer according to an embodiment of the present invention.
Fig. 6 is a schematic view of a capillary column structure according to an embodiment of the present invention.
The reference numbers illustrate:
1-chromatograph, 2-mass spectrometer, 3-recorder, 4-sample inlet, 5-condensation column cap, 6-chromatographic column, 7-first detector, 8-carrier gas source, 9-vacuum chamber, 10-collision cell, 11-dissociation chamber, 12-second detector, 13-needle guide, 14-spacer, 15-O-shaped ring, 16-spacer blowing port, 17-glass liner tube, 18-nut, 19-sealing gasket, 20-capillary column, 21-heating block and 22-connector.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments:
as shown in fig. 1-6, the utility model provides a gas chromatography-mass spectrometry combination instrument, including chromatograph 1, mass spectrometer 2 and record appearance 3, chromatograph 1, mass spectrometer 2 and record appearance 3 are distributed by left to right in proper order, chromatograph 1 includes introduction port 4, and the sample enters into chromatograph 1 from the inside of introduction port, realizes gasifying, the below of introduction port 4 is provided with condensation column head 5, and condensation column head 5 keeps away from the one end of introduction port 4 and fixedly is provided with chromatographic column 6, through the condensation column head 5 that sets up for the solvent recondenses, the top of chromatographic column 6 is provided with first detector 7, utilizes the separation ability of chromatograph 1 to separate the carrier gas, mass spectrometer 2 includes carrier gas source 8, and one side of carrier gas source 8 is provided with the vacuum chamber 9 of intercommunication, the one end of vacuum chamber 9 far away from carrier gas source 8 is connected with collision cell 10, a dissociation cavity 11 which is symmetrically arranged with the vacuum cavity 9 is arranged at one side of the collision pool 10, a second detector 12 is arranged at the outlet end of the dissociation cavity 11, the mass spectrometer 2 is used for qualitative analysis and quantitative analysis of the content of the separated components, the carrier gas source 8 is connected with a filling column, and a glass liner tube 17 is arranged inside the filling column, a needle guide 13 is arranged on the top of the glass liner tube 17, a spacer 14 for installing a needle guide 13 is arranged inside the top end of the glass liner tube 17, an O-shaped ring 15 is fixedly sleeved on the outer wall of the glass liner tube 17, and the outside of the glass liner tube 17 is sleeved with an outer tube, the outer wall of one side of the outer tube is provided with a spacer purging opening 16 communicated with the glass liner tube 15, the bottom end of the glass liner tube 17 is provided with a screw cap 18 through a sealing gasket 19 made of graphite material, and the inside of the bottom end of the screw cap 18 is inserted with a capillary column 20.
As can be seen from the above description, the present invention has the following advantages: the condensation column head 5 arranged below the sample inlet 4 can realize the re-cooling of the solvent, and improve the efficiency of conveying the gas to the chromatographic column 6; through the arranged filling column, impurities in the detection gas can be effectively filtered, the cleanliness of the detection gas is ensured, and meanwhile, the accuracy of a detection result is improved; the sealing gasket 19 made of graphite material improves the sealing performance of the gas conveying pipeline, avoids the leakage in the gas detection process, and improves the accuracy of gas detection.
Further, a communicating structure is formed between the chromatograph 1 and the mass spectrometer 2 through a connector 22, and a heating block 21 is fixedly sleeved outside the connector 22.
Further, the capillary column 20 is a multi-hollow layer open column, the outer surface of the capillary column 20 is coated with a polyimide material, and the inner surface of the capillary column 20 is chemically treated.
Further, the O-ring 15 and the glass liner tube 17 are in interference fit, and the O-ring 15 is made of soft rubber.
Furthermore, the condensation column head 5 is a hollow structure, and the inner wall of the condensation column head 5 is provided with heat insulation cotton attached.
By adopting the connector 22, the linkage work between the chromatograph 1 and the mass spectrometer 2 can be effectively realized, the separation and the detection of gas can be realized, the capillary column 20 designed by a special structure can be used for the stability of gas guiding of the capillary column 20, the fracture is not easy to occur, and the high-temperature gas-guiding device is suitable for the analysis of the high-temperature condition.
In the following, some preferred embodiments or application examples are listed to help those skilled in the art to better understand the technical content of the present invention and the technical contribution of the present invention to the prior art:
example 1
As shown in fig. 1-6, the utility model provides a gas chromatography-mass spectrometry combination instrument, including chromatograph 1, mass spectrometer 2 and record appearance 3, chromatograph 1, mass spectrometer 2 and record appearance 3 are distributed by left to right in proper order, chromatograph 1 includes introduction port 4, and the sample enters into chromatograph 1 from the inside of introduction port, realizes gasifying, the below of introduction port 4 is provided with condensation column head 5, and condensation column head 5 keeps away from the one end of introduction port 4 and fixedly is provided with chromatographic column 6, through the condensation column head 5 that sets up for the solvent recondenses, the top of chromatographic column 6 is provided with first detector 7, utilizes the separation ability of chromatograph 1 to separate the carrier gas, mass spectrometer 2 includes carrier gas source 8, and one side of carrier gas source 8 is provided with the vacuum chamber 9 of intercommunication, the one end of vacuum chamber 9 far away from carrier gas source 8 is connected with collision cell 10, a dissociation cavity 11 which is symmetrically arranged with the vacuum cavity 9 is arranged at one side of the collision pool 10, a second detector 12 is arranged at the outlet end of the dissociation cavity 11, the mass spectrometer 2 is used for qualitative analysis and quantitative analysis of the content of the separated components, the carrier gas source 8 is connected with a filling column, and a glass liner tube 17 is arranged inside the filling column, a needle guide 13 is arranged on the top of the glass liner tube 17, a spacer 14 for installing a needle guide 13 is arranged inside the top end of the glass liner tube 17, an O-shaped ring 15 is fixedly sleeved on the outer wall of the glass liner tube 17, and the outside of the glass liner tube 17 is sleeved with an outer tube, the outer wall of one side of the outer tube is provided with a spacer purging opening 16 communicated with the glass liner tube 15, the bottom end of the glass liner tube 17 is provided with a screw cap 18 through a sealing gasket 19 made of graphite material, and the inside of the bottom end of the screw cap 18 is inserted with a capillary column 20.
Wherein, a communicating structure is formed between the chromatograph 1 and the mass spectrometer 2 through a connector 22, and a heating block 21 is fixedly sleeved outside the connector 22; the capillary column 20 adopts a multi-hollow-layer open column, the outer surface of the capillary column 20 is coated with a polyimide material, and the inner surface of the capillary column 20 is chemically treated; further, the O-shaped ring 15 is in interference fit with the glass liner tube 17, and the O-shaped ring 15 is made of soft rubber; the condensation column cap 5 is of a hollow structure, and the inner wall of the condensation column cap 5 is provided with heat insulation cotton attached to the inner wall.
To sum up, the utility model provides a pair of gas chromatography mass spectrometer, the utility model discloses a theory of operation as follows: people loop through chromatograph 1 and mass spectrometer 2 to the gas that awaits measuring, utilize the separation ability of chromatograph 1 to separate the carrier gas, utilize mass spectrometer 2 to carry out qualitative analysis and the quantitative analysis of content to the component that separates out, finally, realize the image printing to the detected data through record appearance 3, bring more audio-visual analysis for people to the detection of gas, wherein wait to detect gas and enter into chromatograph 1 from introduction port 4, utilize condensation column cap 5 to realize condensing the solvent again, realize the separation and the detection to gas through chromatographic column 6 and first detector 7, gas passes through connector 22 and enters into mass spectrometer 2 in succession, gas passes through carrier gas source 8 and enters into vacuum chamber 9 in proper order, collision cell 10, dissociation chamber 11 and second detector 12, the realization is to the mass spectrum detection of gas.
The condensation column head 5 arranged below the sample inlet 4 can realize the re-cooling of the solvent, and improve the efficiency of conveying the gas to the chromatographic column 6; through the arranged filling column, impurities in the detection gas can be effectively filtered, the cleanliness of the detection gas is ensured, and meanwhile, the accuracy of a detection result is improved; the sealing gasket 19 made of graphite material improves the sealing performance of the gas conveying pipeline, avoids the leakage in the gas detection process and improves the accuracy of the gas detection; by adopting the connector 22, the linkage work between the chromatograph 1 and the mass spectrometer 2 can be effectively realized, the separation and the detection of gas can be realized, the capillary column 20 designed by a special structure can be used for the stability of gas guiding of the capillary column 20, the fracture is not easy to occur, and the high-temperature gas-guiding device is suitable for the analysis of the high-temperature condition.
The present invention has been described with reference to the above embodiments and the accompanying drawings, however, the above embodiments are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a gas chromatography mass spectrometer, its characterized in that, includes chromatograph, mass spectrometer and record appearance, chromatograph, mass spectrometer and record appearance distribute in proper order from a left side to the right side, the chromatograph includes the introduction port, the below of introduction port is provided with the condensation column cap, and the one end that the introduction port was kept away from to the condensation column cap is fixed and is provided with the chromatographic column, the top of chromatographic column is provided with first detector, the mass spectrometer includes the carrier gas source, and one side of carrier gas source is provided with the vacuum chamber of intercommunication, the one end that the carrier gas source was kept away from to the vacuum chamber is connected with the collision cell, one side of collision cell is provided with the dissociation chamber that sets up with the vacuum chamber symmetry, the exit end in dissociation chamber is provided with the second detector, be connected with the packing column on the carrier gas source, and the inside of packing column is provided with the glass bushing pipe, the top of glass bushing pipe is, the fixed cover of having connect O type circle on the outer wall of glass bushing pipe, and the outside of glass bushing pipe has cup jointed the outer tube, and it has the shock insulator that is linked together with the glass bushing pipe to open on one side outer wall of outer tube and sweeps the mouth, and the sealed pad that is made by graphite material that the bottom of glass bushing pipe is provided with the nut through setting up, the inside grafting in bottom of nut has capillary tubular column.
2. The GC MS of claim 1, wherein the chromatograph and the mass spectrometer are connected by a connector, and a heating block is fixedly sleeved on the outside of the connector.
3. The GC MS of claim 1, wherein the capillary column is a multi-void open column, and wherein the outer surface of the capillary column is coated with a polyimide material and the inner surface of the capillary column is chemically treated.
4. The GC MS of claim 1, wherein the O-ring is in an interference fit with the glass liner tube, and the O-ring is made of soft rubber.
5. The GC-MS of claim 1, wherein the condensation column head is hollow and has a heat insulation cotton attached to an inner wall thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920289339.6U CN209894764U (en) | 2019-03-07 | 2019-03-07 | Gas chromatography-mass spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920289339.6U CN209894764U (en) | 2019-03-07 | 2019-03-07 | Gas chromatography-mass spectrometer |
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| Publication Number | Publication Date |
|---|---|
| CN209894764U true CN209894764U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920289339.6U Active CN209894764U (en) | 2019-03-07 | 2019-03-07 | Gas chromatography-mass spectrometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834668A (en) * | 2020-12-30 | 2021-05-25 | 中国原子能科学研究院 | Low-temperature control device for analyzing hydrogen isotopes by gas chromatography |
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2019
- 2019-03-07 CN CN201920289339.6U patent/CN209894764U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834668A (en) * | 2020-12-30 | 2021-05-25 | 中国原子能科学研究院 | Low-temperature control device for analyzing hydrogen isotopes by gas chromatography |
| CN112834668B (en) * | 2020-12-30 | 2022-08-19 | 中国原子能科学研究院 | Low-temperature control device for analyzing hydrogen isotopes by gas chromatography |
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