CN110031563A - A kind of gas chromatograph-mass spectrograph time-sharing multiplex interface arrangement and detection method - Google Patents
A kind of gas chromatograph-mass spectrograph time-sharing multiplex interface arrangement and detection method Download PDFInfo
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- CN110031563A CN110031563A CN201910351609.6A CN201910351609A CN110031563A CN 110031563 A CN110031563 A CN 110031563A CN 201910351609 A CN201910351609 A CN 201910351609A CN 110031563 A CN110031563 A CN 110031563A
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 239000000126 substance Substances 0.000 claims description 25
- 238000000926 separation method Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 5
- 238000004587 chromatography analysis Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000004817 gas chromatography Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- 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
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- 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
- G01N30/62—Detectors specially adapted therefor
- G01N30/72—Mass spectrometers
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Abstract
This application involves a kind of gas chromatograph-mass spectrograph time-sharing multiplex interface arrangement and detection methods.It is provided with the first four-way valve and the second four-way valve module in the interface arrangement, includes one or more second four-way valves in the second four-way valve module；The No.1 interface of first four-way valve connects mass spectrograph, and No. three interfaces connect gas chromatograph, and No. two interfaces of first four-way valve are connect with the No.1 interface of the second four-way valve of the second four-way valve element end；In the second four-way valve module, the No.1 interface of adjacent second four-way valve and No. two interfaces are separately connected, so that the multiple second four-way valve is sequentially connected, No. three interfaces of second four-way valve are all connected with gas chromatograph；Also, No. two interfaces of the second four-way valve of the second four-way valve module head end connect gas chromatograph.The application can be realized more gas chromatographs and a mass spectrometric time-sharing multiplex.
Description
Technical field
The present invention relates to detection device technical fields, and in particular to one kind is for connecting gas chromatograph and mass spectrometric connecing
Mouth device, and the detection method carried out using the interface arrangement.
Background technique
When gas chromatography-mass spectrography, gas chromatograph and mass spectrograph therein are all one-to-one setting, gas-chromatography
Instrument separates sample, and mass spectrograph analyzes sample and acquires signal.Under normal conditions, a chromatographic column is only used for
The analysis work of one substance, a gas chromatograph only install a chromatographic column.To complete a plurality of types of species analysis
Work, it is necessary to be carried out respectively using more chromatographs, need to be arranged the mass spectrograph of equivalent amount accordingly.But mass spectrograph
Price it is very expensive, the significantly larger than price of gas chromatograph.
In the prior art, a kind of intelligence automatic switchover multichannel gas chromatographic column attachment device, including fixed base are proposed
Seat, multiple gas chromatographic columns, further include have display screen control panel and two have and a plurality of fluid channel and pass through rotation
Switch the multichannel chromatographic column attachment device that fluid channel makes fluid flow through different gas chromatographic columns.In the technical solution,
When replacing gas chromatographic column, do not need manual teardown and reinstall, can a key auto-changeover control sample introduction in different chromatographies
In column.However, this technical solution is for connection while realizing more root chromatogram columns in a chromatograph, only a wherein quilt
The chromatographic column of selection can work, and the both ends of remaining chromatographic column are shut, in complete idle state.
Summary of the invention
In view of above-mentioned the technical problems existing in the prior art, the application is intended to provide a kind of novel gas chromatograph-
Mass spectrograph time-sharing multiplex interface arrangement, and the detection method carried out using the interface arrangement, the interface arrangement that the application proposes
More gas chromatographs and a mass spectrograph can be connected, the time of different gas chromatograph separation variety classes substances is utilized
Difference, enable more gas chromatographs at times share a mass spectrograph, to complete the detection work of a variety of substances
Make, reduces installation cost.
This application provides a kind of gas chromatograph-mass spectrograph time-sharing multiplex interface arrangement, it is arranged in the interface arrangement
There are the first four-way valve and the second four-way valve module, includes one or more second four-way valves in the second four-way valve module；
The No.1 interface connection mass spectrograph of first four-way valve, No. three interfaces connection gas chromatographs, the described 1st
No. two interfaces of port valve are connect with the No.1 interface of the second four-way valve of the second four-way valve element end；
In the second four-way valve module, the No.1 interface of adjacent second four-way valve and No. two interfaces are separately connected, so that
The multiple second four-way valve is sequentially connected, and No. three interfaces of second four-way valve are all connected with gas chromatograph；
Also, No. two interfaces of the second four-way valve of the second four-way valve module head end connect gas chromatograph.
As the optional embodiment of the application, No. four interfaces of first four-way valve are for emptying.
As the optional embodiment of the application, No. four interfaces of second four-way valve are used to empty.
As the optional embodiment of the application, first four-way valve and second four-way valve are two four-ways
Valve.
As the optional embodiment of the application, the No.1 interface of first four-way valve, No. two interfaces, No. three interfaces
Internal diameter is same or similar with the internal diameter of chromatographic column in the gas chromatograph being connect.
As the optional embodiment of the application, in the second four-way valve module, the one of multiple second four-way valves
Number interface, No. two interfaces, the internal diameter of No. three interfaces are same or similar with the internal diameter of chromatographic column in the gas chromatograph being connect.
The application also proposed a kind of to be examined using any of the above-described gas chromatograph-mass spectrograph time-sharing multiplex interface arrangement
The method of survey, by controlling the variation of the spool of first four-way valve and the spool position of second four-way valve, so that institute
It states mass spectrograph to connect from different gas chromatographs respectively, enters the matter after the test substance separation in the gas chromatograph
It is detected in spectrometer.
Further, the detection method includes the following steps:
It is connected to No. two interfaces and No.1 interface of first four-way valve；
It is connected to No. two interfaces and No.1 interface of adjacent second four-way valve；
It is connected to the one of No. two interfaces of first four-way valve and the second four-way valve of the second four-way valve element end
Number interface；
It is connected to No. three interfaces and No.1 interface of one of them the second four-way valve in the second four-way valve module, the matter
Spectrometer is connect with the gas chromatograph of No. three interfaces of the second four-way valve described in this, the test substance in the gas chromatograph
Enter in the mass spectrograph after separation and is detected.
Further, the detection method includes the following steps:
It is connected to No. two interfaces and No.1 interface of first four-way valve；
It is connected to No. two interfaces and No.1 interface of adjacent second four-way valve；
It is connected to the one of No. two interfaces of first four-way valve and the second four-way valve of the second four-way valve element end
Number interface；
It is connected to the No.1 interface of the second four-way valve of head end and No. two interfaces, the mass spectrum in the second four-way valve module
Instrument is connect with the gas chromatograph of No. two interfaces of the second four-way valve described in this, the test substance in the gas chromatograph point
From it is rear enter the mass spectrograph in detected.
Further, the detection method includes the following steps:
It is connected to No. two interfaces and No.1 interface of adjacent second four-way valve；
It is connected to the one of No. two interfaces of first four-way valve and the second four-way valve of the second four-way valve element end
Number interface；
It is connected to the No.1 interface and No. three interfaces of first four-way valve；
The mass spectrograph is connect with the gas chromatograph of No. three interfaces of first four-way valve, the gas chromatograph
In test substance separation after enter the mass spectrograph in detected.
The gas chromatograph of the application-mass spectrograph time-sharing multiplex interface arrangement, can connect more gas chromatographs and one
Platform mass spectrograph, since the type of the separated substance of more gas chromatographs is different, disengaging time will have biggish difference,
So as to guarantee that the sample after separation can be sequentially sent in mass spectrograph in section by gas chromatograph respectively in different times,
And then different types of substance is detected respectively.
Therefore, the gas chromatograph of the application-mass spectrograph time-sharing multiplex interface arrangement can utilize substance separation process
Time difference realizes more gas chromatographs and a mass spectrometric time-sharing multiplex.
Detailed description of the invention
Fig. 1 is gas chromatograph provided by the present application-mass spectrograph time-sharing multiplex interface arrangement structural schematic diagram.
Fig. 2 is a kind of structural schematic diagram for time-sharing multiplex interface arrangement that embodiments herein provides.
Specific embodiment
Below in conjunction with drawings and examples, a specific embodiment of the invention is described in more details, so as to energy
The advantages of enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and reality
It applies example to be for illustrative purposes only, rather than limiting the invention.
" connection " described herein unless otherwise specific regulation or is limited, should be broadly understood, can be directly
It is connected, is also possible to be connected by intermediary.In the description of the present application, it is to be understood that "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", " top ", " bottom end " is orientation based on the figure or position
Relationship is merely for convenience of description the application and simplifies description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
As shown in Figure 1, gas chromatograph-mass spectrograph time-sharing multiplex interface arrangement that the application proposes, including the first four-way
Valve 1 and the second four-way valve module, wherein include one or more second four-way valves 2 in the second four-way valve module.
The gas chromatograph proposed in the application-mass spectrograph time-sharing multiplex interface arrangement, can make more gas chromatographs
It is used in conjunction with same mass spectrograph, also, more gas chromatographs can use the mass spectrograph in section in different times respectively
The detection and analysis of substance are carried out, so as to avoid interfering with each other between the substance of different disengaging times.Specifically, gas-chromatography
In instrument isolation technics, using gas as mobile phase, multi-component mixture can be separated into one-component.Wherein, due to difference
Substance gas mobile phase and stationary phase in the chromatography column between distribution coefficient it is different, therefore each component in mixture exists
The speed of service in chromatographic column is also just different, and after the chromatographic column of certain column length, each component is separated and sequentially leaves chromatography
Instrument realizes the separation of mixture.Mass spectrograph can ionize material molecule, and carry out to ion according to mass-charge ratio
Separation and analysis, are finally completed the qualitative and quantitative analysis of substance.
In the time-sharing multiplex interface arrangement of the application, the first four-way valve 1 has the interface 12, three of No.1 interface 11, two
Interface 13 and No. four interfaces 14.Second four-way valve 2 all has the interface 23 of interface 22, three of No.1 interface 21, two and No. four connect
Mouth 24.
Time-sharing multiplex interface arrangement as shown in Figure 1, in the second four-way valve module, when including in the second four-way valve module
When there are multiple second four-way valves 2, it is sequentially connected between multiple second four-way valves 2.Also, every two adjacent second four-way valve 2
No.1 interface 21 and No. two interfaces 22 be separately connected.No. three interfaces 23 of the second four-way valve 2 are all connected with gas chromatograph 3.It can
Choosing, No. four interfaces 24 of the second four-way valve 2 are used to empty.
As shown in Figure 1, the No.1 interface 11 of the first four-way valve 1 connects mass spectrograph 4.No. three interfaces 13 of the first four-way valve 1
Connect gas chromatograph 3.Second four-way valve 2 of No. two interfaces 12 of the first four-way valve 1 and the second four-way valve element end position
No.1 interface 21 connect.Optionally, No. four interfaces 14 of the first four-way valve 1 are for emptying.
Optionally, in the second four-way valve module, gas phase is connected at No. two 22 positions of interface of the second four-way valve 2 of head end
Chromatograph 3.In the different embodiments of the application, it is also possible to No. two interfaces of the second four-way valve 2 at other positions
Gas chromatograph is connected at 22, the connection type of remaining corresponding interface will change, and details are not described herein.
When including first four-way valve 1 and N number of second four-way valve 2 in the time-sharing multiplex interface arrangement of the application, originally connect
It can include (N+2) platform gas chromatograph and a mass spectrograph in mouth device, realize (N+2) platform gas chromatograph for one
Mass spectrometric time-sharing multiplex.
As the optional embodiment of the application, above-mentioned mass spectrograph and gas chromatograph pass through gas pipeline and corresponding
Interface be attached, be also to be attached by gas pipeline between each interface.Also, the internal diameter of each gas pipeline with
The internal diameter for the interface that its both ends is connected is identical, so that the sample in gas pipeline be avoided to spread.In practical operation
In the process, the internal diameter of each gas pipeline can also be slightly less than the internal diameter for the interface that its both ends is connected, or be slightly larger than its both ends
The internal diameter of the interface connected.
Optionally, the gas pipeline in the application is all made of passivation pipeline, to avoid different types of sample and pipeline
Adsorption effect occurs when contact, influences separation analysis.
In the attached drawing of the application, for ease of description, more gas chromatographs have been all made of same appended drawing reference.
As the optional embodiment of the application, the first four-way valve 1 and the second four-way valve 2 select two position four-way valves.This Shen
Please in, be not intended to limit used in two position four-way valves concrete type, in various embodiments can be according to different operating ring
The demand in border is selected.
Further, in the time-sharing multiplex interface arrangement of the application, 11, No. two interfaces of No.1 interface of the first four-way valve 1
12, the internal diameter of No. three interfaces 13 with chromatographic column in the gas chromatograph 3 being connect at No. three interfaces 13 of the first four-way valve 1
Internal diameter is same or similar, so that can realize close connection and sealing between each interface by gas pipeline, avoids gas
The influence that the diffusion couple separation process of sample material may cause in pipeline.
Further, in the second four-way valve module of the application, No.1 interface 21, two of multiple second four-way valves 2 are connect
The internal diameter of 22, No. three interfaces 23 of mouth is same or similar with the internal diameter of chromatographic column in the gas chromatograph 3 respectively connecting, to make
Close connection and sealing can be realized between each interface by gas pipeline by obtaining, and avoid the diffusion couple of sample material in gas pipeline
The influence that separation process may cause.
As the optional embodiment of the application, No. four interfaces of the first four-way valve 1 and the second four-way valve 2 are used to arrange
It is empty, it can be ensured that when a wherein gas chromatograph 3 connect the detection for carrying out sample with mass spectrograph 4, remaining gas-chromatography
The outlet of instrument 3 will not be closed, and guarantee that all gas chromatographs 3 can be in running order.
As one of embodiment of the application, one the one or four is provided in the time-sharing multiplex interface arrangement of the application
Port valve 1 and second four-way valve 2, as shown in Figure 2.
In embodiment as shown in Figure 2, the No.1 interface 11 of the first four-way valve 1 connects a mass spectrograph 4.First four-way valve
1 No. three interfaces 13 connect a gas chromatograph 3.No. four interfaces 14 of the first four-way valve 1 are for emptying.
No. two interfaces 22 of the second four-way valve 2 connect a gas chromatograph 3.No. three interfaces 23 of the second four-way valve 2 connect
Connect a gas chromatograph 3.No. four interfaces 24 of the second four-way valve 2 are for emptying.
Also, No. two interfaces 12 of the first four-way valve 1 are connect with the No.1 interface 21 of the second four-way valve 2.
The gas chromatograph of the present embodiment-mass spectrograph time-sharing multiplex interface arrangement, can be realized three gas chromatographs and
One mass spectrometric time-sharing multiplex.
In the application, according to different course of work needs, the gas chromatograph and mass spectrograph of settable different number.
The application proposes a kind of side detected using gas chromatograph-mass spectrograph time-sharing multiplex interface arrangement simultaneously
Method.In the detection method that the application proposes, by controlling the spool of the first four-way valve 1 and the spool position of second four-way valve 2
Variation realizes that mass spectrograph is attached from different gas chromatographs respectively, so that the test substance in gas chromatograph separates
After be able to enter in mass spectrograph and carry out qualitative and quantitative detection.
In the detection method of the application, by following three kinds of modes, the gas of mass spectrograph and different location can be realized respectively
Chromatography is attached:
(1) 11, No. three interfaces 13 of No. two interfaces 12 and No.1 interface and No. four interfaces of the first four-way valve 1 are respectively communicated with
14。
It is connected to the No.1 interface 21 and No. two interfaces 22 of the second adjacent four-way valve 2, so that multiple second four-way valves 2 are successively
Arrangement.
It is connected to the second four-way valve 2 at No. two interfaces 12 and the second four-way valve element end position of the first four-way valve 1
No.1 interface 21.
For one of them second four-way valve 2 in the second four-way valve module, it is respectively communicated with the No.1 of second four-way valve 2
Interface 21 and 23, No. two interfaces 22 of No. three interfaces and No. four interfaces 24.Also, in the second four-way valve module in addition to this second
Remaining second four-way valve 2 except four-way valve 2 is respectively communicated with 22, No. three interfaces 23 and four of No.1 interface 21 and No. two interfaces
Number interface 24.
In this kind of connection type, it is connect at mass spectrograph 4 and No. three interfaces 23 of above-mentioned one of them second four-way valve 2
Gas chromatograph 3 connect, the test substance in the gas chromatograph 3 be able to enter in mass spectrograph 4 after separation carry out it is qualitative
And quantitative detection.
(2) No. two interfaces 12 and No.1 interface 11 of the first four-way valve 1, No. three interfaces 13 and No. four interfaces are respectively communicated with
14。
It is connected to the No.1 interface 21 and No. two interfaces 22 of the second adjacent four-way valve 2, so that multiple second four-way valves 2 are successively
Arrangement.
It is connected to the second four-way valve 2 at No. two interfaces 12 and the second four-way valve element end position of the first four-way valve 1
No.1 interface 21.
It is connected to the No.1 interface 21 and No. two interfaces 22, three of the second four-way valve 2 at the second four-way valve module head end position
Number interface 23 and No. four interfaces 24.
In this kind of connection type, two of the second four-way valve 2 at mass spectrograph 4 and above-mentioned second four-way valve module head end position
Gas chromatograph 3 at number interface 22 connects, and the test substance in the gas chromatograph 3 is able to enter mass spectrograph 4 after separation
The qualitative and quantitative detection of middle progress.
(3) it is connected to the No.1 interface 21 and No. two interfaces 22 of the second adjacent four-way valve 2, so that multiple second four-way valves 2
It is arranged successively.
It is connected to the second four-way valve 2 at No. two interfaces 12 and the second four-way valve element end position of the first four-way valve 1
No.1 interface 21.
It is respectively communicated with the No.1 interface 11 and 13, No. two interfaces 12 of No. three interfaces and No. four interfaces 14 of the first four-way valve 1.
In this kind of connection type, mass spectrograph 4 is connect with the gas chromatograph 3 at No. three interfaces 13 of the first four-way valve 1, should
Test substance in gas chromatograph 3, which is able to enter after separation in mass spectrograph 4, carries out qualitative and quantitative detection.
The gas chromatograph of the application-mass spectrograph time-sharing multiplex interface arrangement, can connect more gas chromatographs and one
Platform mass spectrograph, since the type of the separated substance of more gas chromatographs is different, disengaging time will have biggish difference,
So as to guarantee that the sample after separation can be sequentially sent in mass spectrograph in section by gas chromatograph respectively in different times,
And then different types of substance is detected.
Further, due to being provided with the interface for emptying on the first four-way valve and the second four-way valve, so that
Wherein a gas chromatograph is connected to when being worked on mass spectrograph, and the outlet of remaining gas chromatograph will not be closed,
Also the same in running order, only sample therein also separates outflow not from gas chromatograph.
The gas chromatograph of the application-mass spectrograph time-sharing multiplex interface arrangement can utilize the time of substance separation process
Difference realizes more gas chromatographs and a mass spectrometric time-sharing multiplex.
Finally, it should be noted that obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description
Other various forms of variations or variation out.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
The obvious changes or variations that Shen goes out are still in the protection scope of this invention.
Claims (10)
1. a kind of gas chromatograph-mass spectrograph time-sharing multiplex interface arrangement, which is characterized in that be provided in the interface arrangement
One four-way valve and the second four-way valve module include one or more second four-way valves in the second four-way valve module；
The No.1 interface of first four-way valve connects mass spectrograph, and No. three interfaces connect gas chromatograph, first four-way valve
No. two interfaces connect with the No.1 interface of the second four-way valve of the second four-way valve element end；
In the second four-way valve module, the No.1 interface of adjacent second four-way valve and No. two interfaces are separately connected, so that described
Multiple second four-way valves are sequentially connected, and No. three interfaces of second four-way valve are all connected with gas chromatograph；
Also, No. two interfaces of the second four-way valve of the second four-way valve module head end connect gas chromatograph.
2. time-sharing multiplex interface arrangement according to claim 1, which is characterized in that No. four interfaces of first four-way valve
For emptying.
3. time-sharing multiplex interface arrangement according to claim 1, which is characterized in that No. four interfaces of second four-way valve
It is used to empty.
4. time-sharing multiplex interface arrangement according to claim 1, which is characterized in that first four-way valve and described second
Four-way valve is two position four-way valves.
5. time-sharing multiplex interface arrangement according to claim 1, which is characterized in that the No.1 of first four-way valve connects
Mouth, No. two interfaces, the internal diameter of No. three interfaces are same or similar with the internal diameter of chromatographic column in the gas chromatograph being connect.
6. time-sharing multiplex interface arrangement according to claim 1, which is characterized in that more in the second four-way valve module
The No.1 interface of a second four-way valve, No. two interfaces, No. three interfaces internal diameter with color in the gas chromatograph being connect
The internal diameter for composing column is same or similar.
7. a kind of detected using any gas chromatograph-mass spectrograph time-sharing multiplex interface arrangement of claim 1-6
Method, which is characterized in that pass through the change of the spool of control first four-way valve and the spool position of second four-way valve
Change, so that the mass spectrograph is connected from different gas chromatographs respectively, after the test substance separation in the gas chromatograph
Into being detected in the mass spectrograph.
8. detection method according to claim 7, which comprises the steps of:
It is connected to No. two interfaces and No.1 interface of first four-way valve；
It is connected to No. two interfaces and No.1 interface of adjacent second four-way valve；
The No.1 for being connected to No. two interfaces of first four-way valve and the second four-way valve of the second four-way valve element end connects
Mouthful；
It is connected to No. three interfaces and No.1 interface of one of them the second four-way valve in the second four-way valve module, the mass spectrograph
It is connect with the gas chromatograph of No. three interfaces of the second four-way valve described in this, the test substance separation in the gas chromatograph
Enter in the mass spectrograph afterwards and is detected.
9. detection method according to claim 7, which comprises the steps of:
It is connected to No. two interfaces and No.1 interface of first four-way valve；
It is connected to No. two interfaces and No.1 interface of adjacent second four-way valve；
The No.1 for being connected to No. two interfaces of first four-way valve and the second four-way valve of the second four-way valve element end connects
Mouthful；
Be connected to the No.1 interface of the second four-way valve of head end and No. two interfaces in the second four-way valve module, the mass spectrograph with
The gas chromatograph of No. two interfaces of second four-way valve connects, after the test substance separation in the gas chromatograph
Into being detected in the mass spectrograph.
10. detection method according to claim 7, which comprises the steps of:
It is connected to No. two interfaces and No.1 interface of adjacent second four-way valve；
The No.1 for being connected to No. two interfaces of first four-way valve and the second four-way valve of the second four-way valve element end connects
Mouthful；
It is connected to the No.1 interface and No. three interfaces of first four-way valve；
The mass spectrograph is connect with the gas chromatograph of No. three interfaces of first four-way valve, in the gas chromatograph
Enter in the mass spectrograph after test substance separation and is detected.
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| CN205449920U (en) * | 2016-03-03 | 2016-08-10 | 中国烟草总公司郑州烟草研究院 | Gas chromatography - mass spectrograph / non - mass spectrograph device that can accurately switch |
| CN209961742U (en) * | 2019-04-28 | 2020-01-17 | 北京雪迪龙科技股份有限公司 | Time-sharing multiplexing interface device of gas chromatograph-mass spectrometer |
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| CN203551536U (en) * | 2013-10-14 | 2014-04-16 | 天津出入境检验检疫局动植物与食品检测中心 | Two-dimensional gas chromatograph-mass spectrum combination instrument sharing mass spectrometer |
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| CN105021560A (en) * | 2015-08-11 | 2015-11-04 | 苏州优谱德精密仪器科技有限公司 | Multifunctional analytical equipment for chemical engineering |
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| CN205449920U (en) * | 2016-03-03 | 2016-08-10 | 中国烟草总公司郑州烟草研究院 | Gas chromatography - mass spectrograph / non - mass spectrograph device that can accurately switch |
| CN209961742U (en) * | 2019-04-28 | 2020-01-17 | 北京雪迪龙科技股份有限公司 | Time-sharing multiplexing interface device of gas chromatograph-mass spectrometer |
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