CN201812791U - Miniature ion trap detector - Google Patents
Miniature ion trap detector Download PDFInfo
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- CN201812791U CN201812791U CN2010205059121U CN201020505912U CN201812791U CN 201812791 U CN201812791 U CN 201812791U CN 2010205059121 U CN2010205059121 U CN 2010205059121U CN 201020505912 U CN201020505912 U CN 201020505912U CN 201812791 U CN201812791 U CN 201812791U
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- ion trap
- ion
- laser
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- quality analysis
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Abstract
The utility model discloses a miniature ion trap detector characterized by comprising a laser excited ion source system, an ion trap mass analysis system, a vacuum system, an ion detecting system, a data processing system and a record displaying system. The laser excited ion source system comprises a sample chamber and a laser, the ion trap mass analysis system comprises a miniature ion trap, a laser and a baffle gas channel and is connected with the laser excited ion source system, the vacuum system comprises a miniature turbo-molecular vacuum pump and a mechanical pump and connected with the laser excited ion source system and the ion trap mass analysis system, the ion detecting system comprises a scintillator detector and a micro-current amplifier and is connected with the ion trap mass analysis system, the data processing system comprises a data collector, a data processor and a singlechip circuit and is connected with the ion detecting system, and the record displaying system is an LCD (Liquid Crystal Display) and connected with the data processing system. The utility model has the advantages of simpleness, rapidness and miniaturization.
Description
Technical field
The utility model relates to a kind of checkout equipment, specifically a kind of ion trap quality analysis technology of utilizing, the small ion trap detector of check and analysis content of material and quality.
Background technology
As everyone knows, the first in the world platform mass spectrometric apparatus was born in 1911, was used for isotope assay and inorganic elements analysis the forties, began organic analysis the fifties, studied the GC-MS multiple techniques sixties, and the seventies, computer was introduced.According to the ionization mode difference of ion source system, mass spectrometer can be divided into following several: fast atom bombardment ion source, substance assistant laser desorpted ionized source, electron spray ionisation source, Atmosphere Pressure Chemical Ionization (APCI) source.Specific rate is fast, pollution-free mutually with biology and chemical method because of it for analytical technique of mass spectrum, and the precision height can be widely used in complex sample is analyzed, and is used widely in biological, pharmacy and agricultural byproducts analysis.The mass spectrometer factory of developed countries is a lot, and competition is very fierce, because analytical technique of mass spectrum reaches the increasingly extensive of on-line analysis field at the scene, mass spectrometer constantly develops to customizations, miniaturization, solid state, modularization and fast real-time direction.From mass analyzer and ion source, organic mass analyzer is divided into following several: gas chromatograph-mass spectrometer (GC-MS), liquid chromatograph-mass spectrometer, other organic mass spectrometers mainly contain: substance assistant laser desorpted time-of-flight mass spectrometer (MALDI-TOFMS), fourier transform mass spectrometer (FT-MS) etc.But owing to variation, complexity, the accuracy of present mass spectrometer because of its function, so complicated operation, cost an arm and a leg, and be that large-scale mass spectrometer is not easy to make microminiaturization mostly.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned the deficiencies in the prior art, a kind of small ion trap detector based on laser excitation ion source, ion trap quality analysis technology, small sized turbine molecular pump and mechanical pump and single chip circuit system to be provided.
The utility model can reach by following measure.
A kind of small ion trap detector, it is characterized in that comprising laser excitation ion source system, the ion trap quality analysis system, vacuum system, the ion detection system, data handling system and record display system are formed, laser excitation ion source system is by sample room and laser constitution, the ion trap quality analysis system is by the small ion trap, laser and buffer gas passage are formed, and system is connected with the laser excitation ion source, vacuum system is made up of small sized turbine molecular pump and mechanical pump, and be connected with the ion trap quality analysis system with laser excitation ion source system, the ion detection system is by the scintillator detector, micro current amplifier is formed, and be connected with the ion trap quality analysis system, data handling system is by data acquisition unit, data processor and single chip circuit are formed, and system is connected with ion detection, the record display system is made up of LCD, and is connected with data handling system.
Laser excitation ion source of the present utility model system adopts laser radiation, the sample for preparing is placed on the objective table of sample room, adopts laser radiation to make big molecule sample gasification and initial ionization enter the ion trap quality analysis system through slit then.Photoionization can make ionization energy obtain ionization less than the sample molecule of photon energy as a kind of ionization mode, and different wavelength can make different macromolecular substances generation ionization such as protein.
Ion trap quality analysis system of the present utility model is made up of small ion trap, laser and buffer gas passage.The small ion trap adopts the rectilinear ion trap structure, and its cross section is designed to rectangle.Rectilinear ion trap is a kind of linear ion hydrazine, adopts the reason of this design to be, rectilinear ion trap has higher ion storage ability and ion trap efficient.It is simple in structure, is made of 3 pairs of plate electrodes, is respectively the X electrode pair, Y electrode pair and Z electrode pair.When this small ion trap work, apply the resonance frequency signal of a phase difference 180 degree on the X electrode pair respectively, evict from order to the resonance of assisting ion; Apply a high-voltage radio-frequency signal on the Y electrode pair, in order to catching and quality analysis to ion; Apply direct current signal on the Z electrode pair respectively, be used for ion in axial catching.Small ion trap passage is equipped with the laser that can launch different light waves, makes big molecule sample gases such as the protein ionization under the irradiation of difference compensation light wave that enters in the ion trap produce ion, is caught, fetters by the small ion trap immediately.Under the impact effect of buffer gas, the ion that is hunted down, fetters is constantly finished energy exchange with it, the last metastable small ion trap inside that is stored in.Buffer gas adopts high-purity helium, enters the small ion trap from the buffer gas passage.The photon of different wave length continuous electric in an ion trap ionization cycle and is continuously caught by ion trap from the sample gas molecule, thereby realizes the enrichment of ion.The opposite side slit place of small ion trap connects the ion that the ion detection system is used to detect ejection.
Vacuum system of the present utility model is made up of small sized turbine molecular pump and mechanical pump, and is connected with the ion trap quality analysis system with laser excitation ion source system, is used for instrument is vacuumized.High vacuum is the indispensable prerequisite of small ion trap sensors work, and laser excitation ion source system, ion trap quality analysis system all will be operated under the vacuum condition.Instrument in the utility model adopts miniature oil-free scroll molecular pump as back level fine pumping equipment, owing to do not have oil vapour pollution and than higher vacuum, thereby the measurement sensitivity that helps to improve small ion trap detector especially, this is very important to instrument.Vacuum error not only causes instrument performance to descend, and the impact analysis result also can cause the low vacuum discharge, destroys electrical insulating property, contaminated ion trap mass analyzer, even damage instrument.
Ion detection of the present utility model system is made up of scintillator detector, micro current amplifier, and is connected with the ion trap quality analysis system.The scintillator detector is combined by scintillator and photomultiplier.Change the radio-frequency voltage of the rectilinear ion trap that is added to, the ion that is stored is evicted from from the slit of ion trap according to mass-to-charge ratio, when ion is got on the scintillator of scintillator detector, scintillator produces photon, convert the signal of telecommunication to through photomultiplier and amplify through micro current amplifier again, carry out data acquisition and data processing by data handling system then, obtain mass spectrogram, through single chip circuit, finally be presented on the LCD.
Data handling system of the present utility model is made up of data acquisition unit, data processor and single chip circuit, and is connected with the record display system with the ion detection system.The signal of telecommunication that the ion detection system produces is through the data acquisition unit collection and the data processor processes of data handling system, thereby obtains mass spectrogram, after single chip circuit be presented on the LCD.
Record display system of the present utility model is made up of LCD, is used to show the mass spectrogram that transmits from data handling system.
Single chip circuit of the present utility model is controlled the data handling system of instrument and record display system, need not external computer when working like this, and simple, convenient, reach the purpose of miniaturization.
Description of drawings
Fig. 1 is a principle schematic of the present utility model.
Fig. 2 is the section of structure of the utility model instrument.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
The utility model laser 1 is connected with sample room 2, sample room 2 is connected with small ion trap 3 through slit, small ion trap 3 is connected with buffer gas passage 6 with laser 5, vacuum system 4 is connected with small ion trap 3 with sample room 2 through slit, small ion trap 3 is connected with ion detection system 7 through slit, ion detection system 7 is connected with data handling system 8,9, and data handling system 8,9 is connected with record display system 10.
As shown in Figure 1, a kind of small ion trap detector, its feature comprises laser excitation ion source system, ion trap quality analysis system, vacuum system, ion detection system, data handling system and record display system composition.At first the sample for preparing is placed on the objective table of sample room 2 during instrument work, small sized turbine molecular pump in the vacuum system 4 and mechanical pump vacuumize sample room 2 and small ion trap 3 and make instrument reach instructions for use then, make sample gasification and initial ionization through laser 1 irradiation, slit by sample 2 right-hand members from the sample room of gasification and initial ionization enters small ion trap 3, laser 5 can be launched different light waves makes the further ionization of the sample gas that enters in the small ion trap 3, caught by the small ion trap immediately, constraint, buffer gas adopts high-purity helium, enter small ion trap 3 from buffer gas passage 6, under the impact effect of buffer gas, be hunted down, the ion of constraint is constantly finished energy exchange with it, the last metastable inside that is stored in small ion trap 3, the photon of different wave length in an ion trap ionization cycle continuous electric from the sample gas molecule, and continuously caught by ion trap, thereby realize the enrichment of ion, change the radio-frequency voltage of the rectilinear ion trap 3 that is added to, the ion that is stored is evicted from from the slit of ion trap 3 according to mass-to-charge ratio, enter ion detection system 7, when ion is got on the scintillator on the scintillator detector in the ion detection system 7, scintillator produces photon, converting the signal of telecommunication to through photomultiplier amplifies through micro current amplifier again, the signal of telecommunication that amplifies enters data handling system 8 and 9, through data acquisition unit collection and data processor processes, obtain mass spectrogram, the analysis software in single chip circuit 9, be presented at after the processing on the LCD 10.The data handling system 8 of 9 pairs of instruments of single chip circuit and record display system 10 are controlled, need not external computer when working like this, and simple, convenient, reach the purpose of miniaturization.
Shown in Fig. 2 apparatus structure profile, a kind of small ion trap detector, its feature comprises laser excitation ion source system 1 and 2, ion trap quality analysis system 3,5 and 6, vacuum system 4, ion detection system 7, data handling system 8 and 9, record display system 10 is formed.Power supply and power control system during instrument work are formed by 11, are connected with laser 1, laser 5, buffer gas passage 6, small ion trap 3, small sized turbine molecular pump, mechanical pump, ion detection system 7, data handling system 8, single chip circuit 9, record display system 10 respectively through transmission line 12,13,14,15,16,17,18,19,20,21.At first the sample for preparing is placed on the objective table of sample room 2 during instrument work, and sealing sample room 2, small sized turbine molecular pump in the vacuum system 4 and mechanical pump vacuumize sample room 2 and small ion trap 3 and make instrument reach instructions for use then, and discharge the exhaust passage 22 of gas from vacuum system 4.Make sample gasification and initial ionization through laser 1 irradiation, slit by sample 2 right-hand members from the sample room of gasification and initial ionization enters small ion trap 3, laser 5 can be launched different light waves makes the further ionization of the sample gas that enters in the small ion trap 3, caught by the small ion trap immediately, constraint, buffer gas adopts high-purity helium, enter small ion trap 3 from buffer gas passage 6, under the impact effect of buffer gas, be hunted down, the ion of constraint is constantly finished energy exchange with it, the last metastable inside that is stored in small ion trap 3, the photon of different wave length in an ion trap ionization cycle continuous electric from the sample gas molecule, and continuously caught by ion trap, thereby realize the enrichment of ion, change the radio-frequency voltage of the rectilinear ion trap 3 that is added to, the ion that is stored is evicted from from the slit of ion trap 3 according to mass-to-charge ratio, enter ion detection system 7, when ion is got on the scintillator 23 on the scintillator detector in the ion detection system 7, scintillator 23 produces photon, photon converts the signal of telecommunication to through photomultiplier 24 and amplifies through micro current amplifier 25, the signal of telecommunication that amplifies enters data handling system 8 and 9, gather and data processor 27 processing through data acquisition unit 26, obtain mass spectrogram, the analysis software in single chip circuit 9, be presented at after the processing on the LCD 10.The data handling system 8 of 9 pairs of instruments of single chip circuit and record display system 10 are controlled, need not external computer when working like this, and simple, convenient, reach the purpose of miniaturization.
Claims (4)
1. small ion trap detector, it is characterized in that by laser excitation ion source system, the ion trap quality analysis system, vacuum system, the ion detection system, data handling system and record display system are formed, laser excitation ion source system is by sample room and laser constitution, the ion trap quality analysis system is by the small ion trap, laser and buffer gas passage are formed, and system is connected with the laser excitation ion source, vacuum system is made up of small sized turbine molecular pump and mechanical pump, and be connected with the ion trap quality analysis system with laser excitation ion source system, the ion detection system is by the scintillator detector, micro current amplifier is formed, and be connected with the ion trap quality analysis system, data handling system is by data acquisition unit, data processor and single chip circuit are formed, and system is connected with ion detection, the record display system is made up of LCD, and is connected with data handling system.
2. a kind of small ion trap detector according to claim 1 is characterized in that laser excitation ion source system adopts laser radiation to make sample gasification and initial ionization, enters the ion trap quality analysis system then.
3. a kind of small ion trap detector according to claim 1 is characterized in that the ion trap quality analysis system is equipped with the laser that can launch different light waves.
4. a kind of small ion trap detector according to claim 1 is characterized in that the control of instrument and treatment system directly are made of single-chip microcomputer, are connected to LCDs by circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205059121U CN201812791U (en) | 2010-08-26 | 2010-08-26 | Miniature ion trap detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205059121U CN201812791U (en) | 2010-08-26 | 2010-08-26 | Miniature ion trap detector |
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| CN201812791U true CN201812791U (en) | 2011-04-27 |
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| CN2010205059121U Expired - Fee Related CN201812791U (en) | 2010-08-26 | 2010-08-26 | Miniature ion trap detector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683151A (en) * | 2012-05-15 | 2012-09-19 | 中国科学院合肥物质科学研究院 | Chemical ionization mass spectrometer for selectively controlling reaction ions |
| CN104201086A (en) * | 2014-08-08 | 2014-12-10 | 中国计量科学研究院 | Molecule ion reaction mass spectrum system, molecule ion reaction method and cleaning method |
| CN107328844A (en) * | 2017-07-27 | 2017-11-07 | 山东省科学院海洋仪器仪表研究所 | A variety of soluble gas field monitoring instrument in a kind of seawater |
| CN110739199A (en) * | 2018-07-18 | 2020-01-31 | 萨默费尼根有限公司 | Method and system for detecting ion spatial distribution |
| CN111089891A (en) * | 2019-12-16 | 2020-05-01 | 清华大学深圳国际研究生院 | Low-pressure laser ionization sample injection device and method for solid detection |
-
2010
- 2010-08-26 CN CN2010205059121U patent/CN201812791U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683151A (en) * | 2012-05-15 | 2012-09-19 | 中国科学院合肥物质科学研究院 | Chemical ionization mass spectrometer for selectively controlling reaction ions |
| CN102683151B (en) * | 2012-05-15 | 2015-01-28 | 中国科学院合肥物质科学研究院 | Chemical ionization mass spectrometer for selectively controlling reaction ions |
| CN104201086A (en) * | 2014-08-08 | 2014-12-10 | 中国计量科学研究院 | Molecule ion reaction mass spectrum system, molecule ion reaction method and cleaning method |
| CN104201086B (en) * | 2014-08-08 | 2016-09-14 | 中国计量科学研究院 | A kind of molecular ion reaction substance spectra system and molecular ion reaction, cleaning method |
| CN107328844A (en) * | 2017-07-27 | 2017-11-07 | 山东省科学院海洋仪器仪表研究所 | A variety of soluble gas field monitoring instrument in a kind of seawater |
| CN110739199A (en) * | 2018-07-18 | 2020-01-31 | 萨默费尼根有限公司 | Method and system for detecting ion spatial distribution |
| CN110739199B (en) * | 2018-07-18 | 2022-03-01 | 萨默费尼根有限公司 | Method and system for detecting ion spatial distribution |
| CN111089891A (en) * | 2019-12-16 | 2020-05-01 | 清华大学深圳国际研究生院 | Low-pressure laser ionization sample injection device and method for solid detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20110826 |