CN206022307U - A kind of multistage deflection system of ion and mass spectrometric apparatus - Google Patents
A kind of multistage deflection system of ion and mass spectrometric apparatus Download PDFInfo
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- CN206022307U CN206022307U CN201621095330.4U CN201621095330U CN206022307U CN 206022307 U CN206022307 U CN 206022307U CN 201621095330 U CN201621095330 U CN 201621095330U CN 206022307 U CN206022307 U CN 206022307U
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- ion
- deflection system
- battery lead
- multistage deflection
- multistage
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Abstract
The utility model is related to field of mass spectrometry, the multistage deflection system of specially a kind of ion and mass spectrometric apparatus, it is stepped arrangement including at least two pairs deflecting electrodes, every a pair of deflecting electrodes are made up of two pieces of battery lead plates being parallel to each other, the external size of two electrode plates of same deflecting electrode is identical, opposite polarity voltage, the battery lead plate of all deflecting electrodes is mutually parallel, and the direction of an electric field all same of all deflecting electrodes.The utility model can effectively eliminate the interference of neutral molecule, make ion through step by step deflect after, more effectively enter in the mass analyzer of next stage, can also be combined with quadrupole rod mass analyzer, filtering out needs the object ion of research to be transferred in the mass analyzer of next stage, to carry out the research of next step.
Description
Technical field
The utility model is related to field of mass spectrometry, the multistage deflection system of specially a kind of ion and mass spectrometric apparatus.
Background technology
Mass spectrum is a kind of device for being isolated according to ion difference mass-to-charge ratio and being come.Its major part includes：Ion gun,
Electro-ionic osmosis system, mass analyzer, ion detection system, vacuum system.Wherein, electro-ionic osmosis System Take and ion is entered
The vital task of row transmission guiding, is analyzed so that ion more effectively enters mass analyzer from after ion gun generation.
However, although ionogenic species is a lot, ionogenic ionizing efficiency is limited, and it can not be by all of sample
Product molecular ionization.Some ion guns, not only produce ion, including cation, anion, or even can produce electronics, be also accompanied by
Unionized sample molecule or atom, such as laser splash ion gun.Unionized sample molecule enters quality analysis with ion
Device can form interference, the signal to noise ratio of lowering apparatus.
Utility model content
The purpose of this utility model is to provide a kind of interference that can reduce even eliminating neutral molecule, improves instrument signal to noise ratio
With the multistage deflection system of the ion of ion transmission efficiency and mass spectrometric apparatus.
For achieving the above object, the utility model provides technical scheme below：A kind of multistage deflection system of ion, including
At least two pairs deflecting electrodes are stepped arrangement, and every a pair of deflecting electrodes are made up of two pieces of battery lead plates being parallel to each other, same partially
The external size of two electrode plates that turns electrode is identical, opposite polarity voltage, and the battery lead plate of all deflecting electrodes is mutually parallel,
And the direction of an electric field all same of all deflecting electrodes.
The external voltage of the battery lead plate is DC voltage.
The step therein of the homonymy battery lead plate of adjacent two deflecting electrode is 2mm-5mm.
The polarity of the external voltage of each battery lead plate is adjustable.
The size of the external voltage of each battery lead plate is adjustable.
The battery lead plate is made up of the insulator that conductive material, semi-conducting material or surface are coated with conductive material.
The battery lead plate of all deflecting electrodes is mutually parallel.
A kind of mass spectrometric apparatus for applying the multistage deflection system of the ion, including ion gun, the ion of ion gun transmitting
Motion path on be sequentially provided with taper hole, the multistage deflection system, mass analyzer and ion detector.
The ion gun is electric spray ion source, APCI or electron impact ion source.
The mass analyzer is the analysis of TOF, quadrupole rod mass analyzer or ion trap mass
Device.
Of the present utility model have technical effect that：The interference of neutral molecule can be effectively eliminated, and ion is made through step by step
After deflection, more effectively enter in the mass analyzer of next stage, it is also possible to combined with quadrupole rod mass analyzer, filtering out needs
Object ion to be studied is transferred in the mass analyzer of next stage, to carry out the research of next step.
Description of the drawings
Fig. 1 is the structural representation of the multistage deflection system of ion that embodiment of the present utility model is provided；
Fig. 2 is the dimensional structure diagram of the multistage deflection system of ion that embodiment of the present utility model is provided；
Fig. 3 is that movement locus when ion passes through the ion deflecting system provided by embodiment of the present utility model is illustrated
Figure；
Fig. 4 is the mass spectrometric apparatus structural representation provided by embodiment of the present utility model.
Specific embodiment
Specific embodiment of the utility model is described in detail below in conjunction with accompanying drawing.
Structural representations of the Fig. 1 for the multistage deflection system 10 of ion, the multistage deflection system of the ion that the utility model is provided
10, including two pairs, three pairs or more battery lead plate 101a, 101b, 102a, 102b, 103a, 103b to opposing parallel placement is in
Echelon formation, apply on every a pair of battery lead plates 101a, 101b or 102a, 102b or 103a, 103b equal in magnitude, opposite polarity
Voltage (such as 0.1V, -0.1V；0.2V,-0.2V；0.5V, -0.5V), as shown in figure 3, when ion enters multistage deflection system 10
Afterwards, under the electric field action of every a pair of deflecting electrodes 101,102,103, different degrees of deflection is realized.Inclined through certain angle
Ion beam after turning can be in the presence of the various ion guide devices such as radio frequency funnel, guide bar, simple lens through focusing into
Enter mass analyzer, carry out mass spectral analysis.Preferably, the external voltage of the battery lead plate is DC voltage.Adjacent two deflection electricity
The step therein of the homonymy battery lead plate of pole is that (" drop " this statement only refers to what adjacent two deflecting electrode staggered to 2mm-5mm
Distance, not the direction to staggering be defined, it is impossible to be interpreted as that adjacent two deflecting electrode vertically staggers).Concrete real
This drop can be selected according to the predetermined deflected trajectory of ion during applying.
The yawing moment of the deflecting electrode is adjustable, and its implementation is：Electricity is changed by the polarity of change battery lead plate
Field direction, so that change the yawing moment of ion.In addition, the deflection angle of deflecting electrode is adjustable, its implementation is：By changing
The size of the external voltage of power transformation pole plate is come and changes electric-field intensity, so as to change the electric field force size that ion is subject to.
Fig. 2 is a kind of dimensional structure diagram of the multistage deflection system 10 of ion, this system by three pairs of deflecting electrodes 101,
102nd, 103 trapezoidal rearrange.
Fig. 4 is a specific application example of the multistage deflection system 10 of ion as entirety.The structure for wherein including has：
Ion gun 11, taper hole 12, multistage deflection system 10, ion guide device 13, slit 14, quadrupole rod mass analyzer 15, ion
Detector 16.Sample is ionized in 11 part of ion gun, through sample introduction taper hole 12, enters the multistage deflection system 10 of ion, warp
Focusing and the guide function of ion guide device 13 is crossed, slit 14 of the ion by one fixed width, ion enter quadrupole rod quality
Analyzer 15, finally reaches detector 16 and is detected.
The multistage deflection system 10 that the utility model is provided includes several relatively flat to (such as two pairs, three pairs or more to)
Deflecting electrode plate 101a, 101b, 102a, 102b, 103a, 103b that row is placed；The deflecting electrode plate 101a staggered relatively,
101b or 102a, 102b or 103a, 103b are equivalently-sized, apply equal in magnitude thereon respectively, and opposite polarity voltage is (for example
2V, -2V, 1.5V, -1.5V, 1V, -1V) a certain degree of deflection is carried out to ion, ion is separated with neutral molecule.
Described deflecting electrode plate 101a, 101b, 102a, 102b, 103a, 103b adopt conductive material, or in semiconductor
Or insulator surface plates conductive material；101,102,103 trapezoidal arrangement of deflecting electrode, gradually enters horizontal deflection to ion 20.
In the utility model, described deflecting electrode 101,102,103 is not limited by shape, size and making material
System, as long as ion is deflected by applying DC voltage.Shape can be plane, anchor ring and its
His curved surface.
The multistage deflection system 10 of ion of the present utility model can be used in combination with electric spray ion source, it is also possible to and air
The various ion guns such as pressure chemical ionization, electron impact ion source are used cooperatively.
The multistage deflection system 10 of ion of the present utility model can be with TOF, quadrupole rod quality analysis
The various mass analyzers such as device, ion strap mass analyzer are used cooperatively.
The advantage of the multistage deflection system 10 of ion of the present utility model is：The dry of neutral molecule can be effectively eliminated
Disturb, ion is made after deflecting step by step, more effectively enter in the mass analyzer of next stage, it is also possible to quadrupole rod quality point
Parser is combined, and filtering out needs the object ion of research to be transferred in the mass analyzer of next stage, to carry out next step
Research.
Finally illustrate, the foregoing is only preferred embodiment of the present utility model, be not limited to this practicality new
Type, it is clear that those skilled in the art can carry out various changes and modification without deviating from the utility model to the utility model
Spirit and scope.So, if these modifications of the present utility model and modification belong to the utility model claim and its wait
Within the scope of technology, then the utility model is also intended to comprising these changes and modification.
Claims (10)
1. the multistage deflection system of a kind of ion, it is characterised in that：It is stepped arrangement including at least two pairs deflecting electrodes, per a pair
Deflecting electrode is made up of two pieces of battery lead plates being parallel to each other, pole identical with the external size of two electrode plates of a pair of deflecting electrodes
The contrary voltage of property, and the direction of an electric field all same of all deflecting electrodes.
2. the multistage deflection system of ion according to claim 1, it is characterised in that：The external voltage of the battery lead plate is straight
Stream voltage.
3. the multistage deflection system of ion according to claim 1, it is characterised in that：The same lateral electrode of adjacent two deflecting electrode
The step therein of plate is 2mm-5mm.
4. the multistage deflection system of ion according to claim 1, it is characterised in that：The external voltage of each battery lead plate
Polarity is adjustable.
5. the multistage deflection system of ion according to claim 1, it is characterised in that：The external voltage of each battery lead plate
Size is adjustable.
6. the multistage deflection system of ion according to claim 1, it is characterised in that：The battery lead plate by conductive material, half
Conductor material or surface are coated with the insulator of conductive material and make.
7. the multistage deflection system of ion according to claim 1, it is characterised in that：The battery lead plate of all deflecting electrodes is homogeneous
Mutually parallel.
8. a kind of application claim 1 to 7 any one described in the multistage deflection system of ion mass spectrometric apparatus, it is characterised in that：
Including ion gun, on the motion path of the ion of the ion gun transmitting, taper hole, the multistage deflection system, quality point is sequentially provided with
Parser and ion detector.
9. mass spectrometric apparatus according to claim 8, it is characterised in that：The ion gun is electric spray ion source, atmospheric pressure
Chemi-ionization or electron impact ion source.
10. mass spectrometric apparatus according to claim 8, it is characterised in that：The mass analyzer is time of flight mass point
Parser, quadrupole rod mass analyzer or ion strap mass analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621095330.4U CN206022307U (en) | 2016-09-29 | 2016-09-29 | A kind of multistage deflection system of ion and mass spectrometric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621095330.4U CN206022307U (en) | 2016-09-29 | 2016-09-29 | A kind of multistage deflection system of ion and mass spectrometric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206022307U true CN206022307U (en) | 2017-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621095330.4U Expired - Fee Related CN206022307U (en) | 2016-09-29 | 2016-09-29 | A kind of multistage deflection system of ion and mass spectrometric apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206022307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108089064A (en) * | 2016-11-21 | 2018-05-29 | 中国科学院大连化学物理研究所 | A kind of device and method for measuring pulsed ionizing beam pulse width |
-
2016
- 2016-09-29 CN CN201621095330.4U patent/CN206022307U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108089064A (en) * | 2016-11-21 | 2018-05-29 | 中国科学院大连化学物理研究所 | A kind of device and method for measuring pulsed ionizing beam pulse width |
| CN108089064B (en) * | 2016-11-21 | 2020-04-28 | 中国科学院大连化学物理研究所 | Device and method for measuring pulse width of pulse ion beam |
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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: 20170315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |