CN102280349B - Ionization device used for mass spectrometer - Google Patents
Ionization device used for mass spectrometer Download PDFInfo
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- CN102280349B CN102280349B CN 201010194020 CN201010194020A CN102280349B CN 102280349 B CN102280349 B CN 102280349B CN 201010194020 CN201010194020 CN 201010194020 CN 201010194020 A CN201010194020 A CN 201010194020A CN 102280349 B CN102280349 B CN 102280349B
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Abstract
The invention discloses an ionization device used for a mass spectrometer. The ionization device comprises an electron collection chamber. The electron collection chamber has a small hole which is used to place a capillary column. A repeller electrode is placed in the electron collection chamber. A ceramic ring is arranged between the electron collection chamber and the repeller electrode. At least one filament lead is arranged out of the electron collection chamber. A filament and an electron collector are respectively fixed on a bottom of the filament lead. The filament lead is fixed on a lamp socket. The lamp socket is fixed on a magnet base through a lamp socket pin. The magnet base is fixed on a rack. The electron collection chamber is fixed on the magnet base through a connection board. A magnet is arranged between the magnet base and the rack. The repeller electrode and the electron collection chamber are fixed as one body. The ionization device used for the mass spectrometer of the invention has a simple structure, is easy for dismounting and has high ionization efficiency.
Description
Technical field
The present invention relates to the mass spectrometer field, be specifically related to a kind of for mass spectrometric ionization apparatus.
Background technology
Mass spectrometer claims again mass spectrograph, the different isotopic instruments of a kind of separation and detection, namely according to charged particle elect magnetic field can deflection principle, carry out the quasi-instrument that the separation and detection material forms by the mass discrepancy of material atom, molecule or molecular fragment.Mass spectrometer is take ion source, mass analyzer and ion detector as core.Ion source is to make sample molecule Ionized device under high vacuum condition.Molecule after the ionization can further be fragmented into multiple fragment ion and the neutral particle of less quality because having accepted too much energy.They obtain the mean kinetic energy with identical energy and enter mass analyzer under the accelerating field effect.Mass analyzer is to enter simultaneously the ion of different quality wherein, by the device of mass-to-charge ratio m/z size separation.Ion after the separation enters ion detector successively, gathers to amplify ion signal, and machine is processed as calculated, is depicted as mass spectrogram.Ion source, mass analyzer and ion detector all respectively have polytype.Mass spectrometer is divided into isotope mass spectrometer, inorganic mass spectrometer and organic mass spectrometer by range of application; Be divided into high-resolution, middle resolution and Low Resolution Mass Spectra instrument by resolving power; Be divided into static instrument and dynamic instrument by operation principle.
Ion source is one of mass spectrometric chief component, realizes the zone of sample ions.Consisted of by the accelerating field of ionization chamber, ion beam, condenser lens etc.Its effect is to make analyte ionization, becomes molecular ion or fragment ion.Ionogenic kind is a lot, mainly contains electron ionization sources (EI), chemical ionization source (CI), radio frequency spark source (RFS), inductively coupled plasma ion source (ICP), field-ionization source (FI), field desorption ionization source (FD), fast atom bombardment source (FAB), laser desorption ionisation source (LD), thermospray ionization source (TS), electron spray ionisation source (ESI) etc.
The ionization apparatus that is used for mass spectrometer produces electronics, smashes chemical substance, makes it ionization, is ion source, is used for mass spectrometric quality analysis.
But existing ionization apparatus complex structure is not easy to dismounting, and the cleaning inconvenience of getting up also has significantly defective simultaneously on the function: one, the ionization ion current is unstable, its two, Ionization Efficiency is not high, ion can dissipate when entering ionization chamber.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind ofly for mass spectrometric ionization apparatus, this device ionization ion current is stable, and Ionization Efficiency is high, and simple in structurely is easy to dismounting.
For solving the problems of the technologies described above, realize above-mentioned technique effect, the present invention adopts following technical scheme:
A kind of for mass spectrometric ionization apparatus, it comprises an electron collection chamber, have an aperture on the described electron collection chamber and be used for placing capillary column, the indoor repeller electrode that is mounted with of described electron collection, be provided with a ceramic ring between described electron collection chamber and the repeller electrode, described electron collection outdoor arrangement has at least one wire filament, described wire filament bottom is fixed with respectively a filament and electron collector, described wire filament is fixed on the lamp socket, described lamp socket is fixed on the magnetic receiver by the lamp socket pin, described magnetic receiver is by being fixed on the frame, and described electron collection chamber is fixed on the magnetic receiver by a plate.
Preferably, be provided with magnet between described magnetic receiver and the described frame.
Preferably, described repeller electrode and described electron collection chamber are fixed into one.
Compared with prior art, of the present inventionly have the following advantages for mass spectrometric ionization apparatus:
1. adopted the structure of multi-filament polyelectron gatherer;
The effect of filament is to make filament red heat by electric current, and electronics just overflows from the filament surface of red heat, and the effect of electron collector is to measure the ionization ion current.A plurality of filaments and a plurality of electron collector have been adopted so that the better effects if that electronics overflows and measures has guaranteed stable ion current.
2. added magnet arrangement;
The effect of the magnet arrangement that increases be when electronics after overflow on the filament surface, by the magnetic field of magnet, ion can not dissipate when entering the electron collection chamber, the distance that next can increase ion increases Ionized efficient.
3. the design of electron collection chamber and repeller electrode is in aggregates, and easily assembling is easy to clean.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and cooperate accompanying drawing to be described in detail as follows.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is of the present invention for mass spectrometric ionization apparatus schematic diagram.
Number in the figure explanation: 1. frame, 2. wire filament, 3. lamp socket pin, 4. repeller electrode, 5. magnetic receiver, 6. magnet, 7. filament, 8. electron collection chamber, 9. capillary column, 10. connecting plate, 11. ceramic rings, 12. electron collectors.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
See also shown in Figure 1, a kind of for mass spectrometric ionization apparatus, it comprises an electron collection chamber 8, have an aperture on the described electron collection chamber 8 and be used for placing capillary column 9, be mounted with a repeller electrode 4 in the described electron collection chamber 8, be provided with a ceramic ring 11 between described electron collection chamber 8 and the repeller electrode 4,8 external symmetrys of described electron collection chamber are furnished with two wire filaments 2, described wire filament 2 bottoms are fixed with respectively a filament 7 and electron collector 12, described wire filament 2 is fixed on the lamp socket, described lamp socket is fixed on the magnetic receiver 5 by lamp socket pin 3, described magnetic receiver 5 is by being fixed on the frame 1, and described electron collection chamber 8 is fixed on the magnetic receiver 5 by a plate 10
Preferably, be provided with magnet 6 between described magnetic receiver 5 and the described frame 1.
Preferably, described repeller electrode 4 is fixed into one with described electron collection chamber 8.
The above mass spectrometric ionization apparatus that is used for that the embodiment of the invention is provided is described in detail; for one of ordinary skill in the art; thought according to the embodiment of the invention; therefore all will change in specific embodiments and applications, all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (3)
1. one kind is used for mass spectrometric ionization apparatus, comprise an electron collection chamber (8), have an aperture on the described electron collection chamber (8) and be used for placing capillary column (9), be mounted with a repeller electrode (4) in the described electron collection chamber (8), be provided with a ceramic ring (11) between described electron collection chamber (8) and the repeller electrode (4), the outer at least one wire filament (2) that be furnished with in described electron collection chamber (8), described wire filament (2) bottom is fixed with respectively a filament (7) and electron collector (12), described wire filament (2) is fixed on the lamp socket, described lamp socket is fixed on the magnetic receiver (5) by lamp socket pin (3), described magnetic receiver (5) is fixed on the frame (1), described electron collection chamber (8) is fixed on the magnetic receiver (5) by a plate (10), it is characterized in that: described electron collection chamber (8) is outer to be furnished with two wire filaments (2), and namely this device has two filaments (7) and two electron collectors (12).
2. according to claim 1 for mass spectrometric ionization apparatus, it is characterized in that: be provided with magnet (6) between described magnetic receiver (5) and the described frame (1).
3. according to claim 1 for mass spectrometric ionization apparatus, it is characterized in that: described repeller electrode (4) is fixed into one with described electron collection chamber (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010194020 CN102280349B (en) | 2010-06-08 | 2010-06-08 | Ionization device used for mass spectrometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010194020 CN102280349B (en) | 2010-06-08 | 2010-06-08 | Ionization device used for mass spectrometer |
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| CN102280349A CN102280349A (en) | 2011-12-14 |
| CN102280349B true CN102280349B (en) | 2013-05-01 |
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| CN112516797B (en) * | 2020-12-01 | 2022-09-16 | 中国科学院近代物理研究所 | Electrostatic focusing and accelerating system and method for isotope separation system |
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| CN201829452U (en) * | 2010-06-08 | 2011-05-11 | 江苏天瑞仪器股份有限公司 | Ionization device for mass spectrograph |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201829452U (en) * | 2010-06-08 | 2011-05-11 | 江苏天瑞仪器股份有限公司 | Ionization device for mass spectrograph |
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