CN109994365A - A kind of long shaft multi-stage bar ion focusing transmission part - Google Patents
A kind of long shaft multi-stage bar ion focusing transmission part Download PDFInfo
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- CN109994365A CN109994365A CN201910286064.5A CN201910286064A CN109994365A CN 109994365 A CN109994365 A CN 109994365A CN 201910286064 A CN201910286064 A CN 201910286064A CN 109994365 A CN109994365 A CN 109994365A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 230000005684 electric field Effects 0.000 claims abstract description 16
- 239000004429 Calibre Substances 0.000 claims abstract description 8
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000010884 ion-beam technique Methods 0.000 abstract description 16
- 238000001514 detection method Methods 0.000 abstract description 7
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- 102100022704 Amyloid-beta precursor protein Human genes 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/06—Electron- or ion-optical arrangements
- H01J49/062—Ion guides
- H01J49/063—Multipole ion guides, e.g. quadrupoles, hexapoles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/26—Mass spectrometers or separator tubes
Abstract
The invention discloses long shaft multi-stage bar ion focusing transmission parts, form the conical structure that inlet calibre is greater than outlet aperture at the isometrical conductive pole bar of long axis of space symmetr structure around same axle center including more rhizospheres；Multiple support bases, support base have interior bone, and the isometrical conductive pole bar fixed connection of long axis is on the inside of through-hole, and exit caliber is more than or equal to 2mm, and the isometrical conductive electrode shank diameter of long axis is more than or equal to 1mm, and is less than or equal to 50mm；Support base is staggeredly coupled with the isometrical conductive pole bar of long axis, and is coupled the external power supply that rf electric field and axial gradient electric field inside conical structure can be formed with long axis conductive electrode bar；The present invention substantially reduces the volume of existing apparatus, reduces cost；It can also be obviously improved the refining effect of ion beam, reduce pollution of the ion source to mass spectrometer, reduce detection background, greatly promote the sensitivity of detection, using this structure, can form that low in cost, structure is simple, the higher ion detecting device of sensitivity.
Description
Technical field
The present invention relates to ion focusing transmission fields, especially a kind of to be based on long shaft multi-stage bar ion focusing transmission part.
Background technique
Mass spectrograph is a kind of for detecting highly sensitive, the high-resolution instrument of substance chemical component, it is first by sample
Product are converted into gas ion, are then separated ion according to the size of mass-to-charge ratio (m/z) by electric field, then measure ion
Intensity form mass spectrogram, according to mass spectrogram can be qualitative or quantitative obtain the chemical component of substance.
It can be produced by any system in various ionizing systems for the analyte ions by mass-spectrometry analysis
It is raw.For example, AP-MALDI, APPI, ESI, APCI and ICP system can be used in mass spectrometry system and generate ion.This
Many (760Torr) under atmospheric or near atmospheric pressure in a little systems generate ion.After generating ion, analyte from
Son must be guided into or sample in mass spectrum.In general, mass spectrometric analyzer part is maintained at from 10-4Torr to 10-8Torr
High vacuum levels.In practice, to ion carry out sampling include by analyte ions in the form of the ion beam finely limited from
Ion source is transferred to high vacuum mass spectrograph room via one or more middle vacuum rooms.Before each of middle vacuum room is held at
Vacuum level between rear chamber, wherein analyte ions form associated stress level transition from ion in a stepped fashion
To mass spectrometric stress level.In most applications, it is expected that ion is transmitted in the state of not significant losses of ions
By in the various rooms of spectrometer system, usually using ion guidance in MS system so that ion is moved along the direction of restriction
It is dynamic.
Ion transmission product is six grades of bars of homogeneous diameter currently on the market, and entering of constituting of 6 six grades of bar inscribed circles
As mouthful diameter with outlet diameter is.After six grades of bars apply rf electric field and axial gradient electric field, ion convergent coke is at six grades
Inside bar, outlet then is entered from entrance, is ion and neutral gas one in the atmospheric pressure outside vacuum due to ion source
It rises and is driven by vacuum and the pressure difference of atmospheric pressure, entered by the narrower bore of a very little, entrance hole diameter expands, and can enter vacuum
Ionic weight and the total amount of neutral gas will increase, but be needed the vacuum pump of bigger pumping speed, ion and neutrality could be maintained
The separation of gas guarantees the preferably detection necessary base vacuum of ion.And correspondingly, the inscribe garden circle of six grades of bars needs more
Greatly, most of ion can just be made, after small holes after rapid expansion, into six grades of bars, by the constraint of AC field, then
It focuses.But after six grades of bar inscribed circle diameters are big, the focusing effect in exit is deteriorated, and will lead to more ions and has gone out six
After grade bar, diverging is had lost, it is difficult to be entered in junior's ion optical path, it is therefore desirable to which finding one kind can obtain more in inlet
The measured ion to be checked of more quantity, and better focused ion, while also available better detection can be obtained in exit
Background is to obtain more highly sensitive ways and means.
Summary of the invention
In view of this, needing to overcome at least one of drawbacks described above in the prior art, the present invention provides a kind of length
Axis multistage bar ion focusing transmission part, including the isometrical conductive pole bar of more root long axis, the isometrical conductive pole bar of the long axis is around same
One axle center forms the conical structure that inlet calibre is greater than outlet aperture at space symmetr structure；Multiple support bases, the support base
With interior bone, on the inside of the through-hole, the exit caliber is more than or equal to the isometrical conductive pole bar fixed connection of the long axis
2mm, the isometrical conductive electrode shank diameter of long axis is more than or equal to 1mm, and is less than or equal to 50mm；
The support base is staggeredly coupled with the isometrical conductive pole bar of the long axis, and is coupled and can form institute with the long axis conductive electrode bar
State the external power supply of the rf electric field and axial gradient electric field inside conical structure.
According to the bore phase described in the prior art, exported due to ion beam entrance and ion beam in this patent background technique
Together, lead to not meet simultaneously and reach the cost that can not go to increase integral device with lower cost or simple method and answer
Miscellaneous degree, while the problem of focusing capability can be promoted again；And long shaft multi-stage bar ion focusing transmission part disclosed by the invention, pass through
It, can not only be using the long shaft multi-stage bar ion focusing transmission part for being greater than ion beam exit caliber with ion beam inlet calibre
On the basis of long axis rod piece low cost constant in the prior art, the volume of existing apparatus can be substantially reduced, while can
To reduce cost in the equipment for providing electric field and vacuum；It can also be obviously improved the refining effect of ion beam, electricity can not only be passed through
Field is further focused ion beam along being further change in for axis, moreover it is possible to remove neutrality most in ion beam point
Son improves Ionization Efficiency, reduces pollution of the ion source to mass spectrometer, reduces detection background, can greatly promote
The sensitivity of detection can form that low in cost, structure is simple, the higher ion detecting device of sensitivity using this structure.
Ion source is located in the atmospheric pressure outside vacuum, and ion and neutral gas are together by the pressure difference of vacuum and atmospheric pressure
Driving enters multistage bar ion focusing transmitting device by the narrower bore of a very little, and multistage bar body applies rf electric field and axis
To after gradient electric field, ion convergent coke enters outlet inside multistage bar, from entrance；Multistage bar inlet calibre is big, can make
More ions into multistage bar, by the constraint of AC field, are then focused into, while more after small holes rapid expansion
Grade bar outlet inscribed circle diameter is less than entrance inscribed circle diameter, and the uniform electric field formed due to internal electric field and original structure is not
Together, it is more advantageous to exit ion focusing, after so that more ions has been gone out six grades of bars, is preferably entered in junior's ion optical path,
Simultaneously because the pyramidal structure formed, so that the accounting further expansion of ion and neutral particle, it is possible thereby to bring preferably
Background is detected, the sensitivity of detection is promoted.
In addition, a kind of disclosed long shaft multi-stage bar ion focusing transmission part also has following supplementary technology according to the present invention
Feature:
Further, the isometrical conductive pole bar of the long axis is long axis circular metal rod piece or the external long axis circle with conductive coating
Shape rod piece or the internal long axis circle rod piece with conductive component.
Further, the conductive rod piece 4 or 6 or 8.
Further, the taper of the space symmetr structure is less than or equal to 30 degree and is greater than 0 degree.When space symmetr structure
Taper be 0 when, then mean it is identical as traditional structure, can not be formed exit caliber be less than inlet calibre more excellent structure；
Further, the inlet calibre is less than or equal to 75mm.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the multistage bar rod schematic representation of the embodiment of the present invention.
Wherein, 1 conical structure, the isometrical conductive pole bar of 2 long axis, 3 support bases, 11 entrances, 12 outlets, 31 insulation boards, 32 the
One conductive sheet, 33 second conductive sheets.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions；Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
In the description of the present invention, it is to be understood that, term " on ", "lower", "bottom", "top", "front", "rear",
The orientation or positional relationship of the instructions such as "inner", "outside", " cross ", " perpendicular " is to be based on the orientation or positional relationship shown in the drawings, and is only
For the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connection " " connects
It is logical ", " connected ", " connection ", " cooperation " shall be understood in a broad sense, for example, it may be being fixedly connected, be integrally connected, be also possible to
It is detachably connected；It can be the connection inside two elements；It can be directly connected, the indirect phase of intermediary can also be passed through
Even；" cooperation " can be the cooperation in face and face, be also possible to the cooperation a little with face or line and face, also include the cooperation of hole axle, right
For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Inventive concept of the invention is as follows, provides a kind of long shaft multi-stage bar ion focusing transmission part, by using having
Ion beam inlet calibre is greater than the long shaft multi-stage bar ion focusing transmission part of ion beam exit caliber, and not only mechanism production is simple
Convenient, low in cost, ion beam is adjusted in progressive multi-pole, is that ion beam is electric between the small multi-pole of entrance large outlet
It is focused in, convenient for the transmission of ion beam；Present invention also improves the refining effects to ion beam, remove in ion beam
The neutral molecule of the overwhelming majority, improves Ionization Efficiency, reduces pollution of the ion source to mass spectrometer.
As shown, according to an embodiment of the invention, a kind of long shaft multi-stage bar ion focusing transmission part, comprising:
The isometrical conductive pole bar 2 of more root long axis, the isometrical conductive pole bar 2 of the long axis is around same axle center at space symmetr structure, i.e. circular cone
Structure 1 forms the conical structure 1 that 11 bore of entrance is greater than 12 apertures of outlet；Multiple support bases 3, the support base 3 have inside
Through-hole, for isometrical conductive 2 fixed connection of pole bar of the long axis on the inside of the through-hole, 12 bores of the outlet are more than or equal to 2mm, institute
It states isometrical conductive 2 diameter of pole bar of long axis and is more than or equal to 1mm, and be less than or equal to 50mm；
The support base 3 is staggeredly coupled with the isometrical conductive pole bar 2 of the long axis, and being coupled can be with 2 shape of long axis conduction pole bar
At the external power supply of rf electric field and axial gradient electric field inside the conical structure 1.
In addition, a kind of disclosed also having for long shaft multi-stage bar ion focusing transmission part adds skill as follows according to the present invention
Art feature:
According to some embodiments of the present invention, the isometrical conductive pole bar 2 of the long axis is that long axis circular metal rod piece or outside have
The long axis circle rod piece of conductive coating or the internal long axis circle rod piece with conductive component.
According to some embodiments of the present invention, the isometrical conductive pole bar 2 of the long axis is 4 or 6 or 8.
According to some embodiments of the present invention, the taper of the space symmetr structure is less than or equal to 30 degree and is greater than 0 degree.
According to some embodiments of the present invention, 11 bore of entrance is less than or equal to 75mm.
It is any to refer to that " one embodiment ", " embodiment ", " illustrative examples " etc. mean to combine embodiment description
Specific component, structure or feature are included at least one embodiment of the present invention；This specification everywhere this schematically
Statement is not necessarily referring to identical embodiment；Moreover, when combining any embodiment to describe specific component, structure or feature
When, advocated, component, structure or feature in conjunction with as the realization of other embodiments all fall within those skilled in the art
Within the scope of.
Although having carried out detailed retouch to a specific embodiment of the invention referring to multiple illustrative examples of the invention
It states, it must be understood that those skilled in the art can be designed that various other improvement and embodiment, these improve and implement
Example will be fallen within spirit and scope；Specifically, in aforementioned disclosure, attached drawing and the scope of the claims
Within, reasonable variations and modifications can be made in terms of the arrangement that components and/or sub-combination are laid out, without departing from
Spirit of the invention；In addition to components and/or the variations and modifications of layout aspect, range is by appended claims and its is equal
Object limits.
Claims (5)
1. a kind of long shaft multi-stage bar ion focusing transmission part, including the isometrical conductive pole bar of more root long axis, the long axis is isometrical to be led
Electrode stem, at space symmetr structure, forms the conical structure that inlet calibre is greater than outlet aperture around same axle center；Multiple supports
Seat, the support base have interior bone, and the isometrical conductive pole bar fixed connection of the long axis is on the inside of the through-hole, the outlet
Bore is more than or equal to 2mm, and the isometrical conductive electrode shank diameter of long axis is more than or equal to 1mm, and is less than or equal to 50mm；
The support base is staggeredly coupled with the isometrical conductive pole bar of the long axis, and is coupled and can form institute with the long axis conductive electrode bar
State the external power supply of the rf electric field and axial gradient electric field inside conical structure.
2. a kind of long shaft multi-stage bar ion focusing transmission part according to claim 1, which is characterized in that described long axis etc.
Diameter conduction pole bar is long axis circular metal rod piece or the external long axis circle rod piece or internal with conduction with conductive coating
The long axis circle rod piece of component.
3. a kind of long shaft multi-stage bar ion focusing transmission part according to claim 1, which is characterized in that the conducting rod
Part 4 or 6 or 8.
4. a kind of long shaft multi-stage bar ion focusing transmission part according to claim 1, which is characterized in that the space pair
Claim the taper of structure to be less than or equal to 30 degree and is greater than 0 degree.
5. a kind of long shaft multi-stage bar ion focusing transmission part according to claim 1, which is characterized in that the entrance mouth
Diameter is less than or equal to 75mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910286064.5A CN109994365A (en) | 2019-04-10 | 2019-04-10 | A kind of long shaft multi-stage bar ion focusing transmission part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910286064.5A CN109994365A (en) | 2019-04-10 | 2019-04-10 | A kind of long shaft multi-stage bar ion focusing transmission part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109994365A true CN109994365A (en) | 2019-07-09 |
Family
ID=67133056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910286064.5A Pending CN109994365A (en) | 2019-04-10 | 2019-04-10 | A kind of long shaft multi-stage bar ion focusing transmission part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109994365A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115831704A (en) * | 2023-02-23 | 2023-03-21 | 杭州凯莱谱精准医疗检测技术有限公司 | Mass spectrometry apparatus comprising a segmented graded ion transport channel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417511B1 (en) * | 2000-07-17 | 2002-07-09 | Agilent Technologies, Inc. | Ring pole ion guide apparatus, systems and method |
| US20030136905A1 (en) * | 2001-12-06 | 2003-07-24 | Bruker Daltonik Gmbh | Ion-guide systems |
| CN201918357U (en) * | 2009-05-28 | 2011-08-03 | 安捷伦科技有限公司 | Multipole ion guide part used for convergence for forming ion beam |
| CN105931944A (en) * | 2016-05-18 | 2016-09-07 | 中山大学 | Ion transmission system |
| CN107004566A (en) * | 2014-11-28 | 2017-08-01 | Dh科技发展私人贸易有限公司 | RF ion guides |
| CN209843656U (en) * | 2019-04-10 | 2019-12-24 | 江苏天瑞仪器股份有限公司 | Long-shaft multi-level rod ion focusing transmission component |
-
2019
- 2019-04-10 CN CN201910286064.5A patent/CN109994365A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417511B1 (en) * | 2000-07-17 | 2002-07-09 | Agilent Technologies, Inc. | Ring pole ion guide apparatus, systems and method |
| US20030136905A1 (en) * | 2001-12-06 | 2003-07-24 | Bruker Daltonik Gmbh | Ion-guide systems |
| CN201918357U (en) * | 2009-05-28 | 2011-08-03 | 安捷伦科技有限公司 | Multipole ion guide part used for convergence for forming ion beam |
| CN107004566A (en) * | 2014-11-28 | 2017-08-01 | Dh科技发展私人贸易有限公司 | RF ion guides |
| CN105931944A (en) * | 2016-05-18 | 2016-09-07 | 中山大学 | Ion transmission system |
| CN209843656U (en) * | 2019-04-10 | 2019-12-24 | 江苏天瑞仪器股份有限公司 | Long-shaft multi-level rod ion focusing transmission component |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115831704A (en) * | 2023-02-23 | 2023-03-21 | 杭州凯莱谱精准医疗检测技术有限公司 | Mass spectrometry apparatus comprising a segmented graded ion transport channel |
| CN115831704B (en) * | 2023-02-23 | 2023-05-26 | 杭州凯莱谱精准医疗检测技术有限公司 | Mass spectrometer apparatus having a segmented graded ion transport channel |
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