WO2014110697A1 - 一种多次反射的高分辨飞行时间质谱仪 - Google Patents
一种多次反射的高分辨飞行时间质谱仪 Download PDFInfo
- Publication number
- WO2014110697A1 WO2014110697A1 PCT/CN2013/000637 CN2013000637W WO2014110697A1 WO 2014110697 A1 WO2014110697 A1 WO 2014110697A1 CN 2013000637 W CN2013000637 W CN 2013000637W WO 2014110697 A1 WO2014110697 A1 WO 2014110697A1
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- Prior art keywords
- reflector
- mass spectrometer
- ions
- flight mass
- ion source
- Prior art date
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- 150000002500 ions Chemical class 0.000 claims abstract description 85
- 230000001133 acceleration Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 238000010849 ion bombardment Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000006303 photolysis reaction Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 abstract description 2
- 238000001269 time-of-flight mass spectrometry Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 238000004949 mass spectrometry Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
- H01J49/34—Dynamic spectrometers
- H01J49/40—Time-of-flight spectrometers
- H01J49/406—Time-of-flight spectrometers with multiple reflections
Definitions
- the invention belongs to the field of mass spectrometry, and in particular relates to a high resolution time-of-flight mass spectrometer with multiple reflections.
- the Time of Flight Mass Spectrometer is a commonly used mass spectrometer.
- This mass spectrometer is mainly composed of an accelerator, a flight tube, and a microchannel plate detector (MCP).
- MCP microchannel plate detector
- the ions generated by the ion source are accelerated into a fieldless flying tube and fly to the MCP at a constant speed.
- ions of different masses can be separated by mass-to-charge ratio (m/z).
- the two-field acceleration technique is commonly used in current time-of-flight mass spectrometers.
- the two-field acceleration technique accelerates ions by two electric fields with specific parameters. The effect is that ions with different initial positions reach a specific position at a certain time, realizing "space focusing" of ions. This particular location is the focus of the space, which is determined by the size and voltage distribution of the accelerator.
- the mass of the ions does not affect the position of the focus, which means that the different ion focus positions are the same, but the flight time is different, which is the basis of time-of-flight mass spectrometry.
- the accelerator with a specific voltage configuration has a fixed spatial focus distance, it limits the flight time.
- the solution is to add during the ion flight.
- the ions with high energy fly into the depth, the time spent is long, the ions with low energy fly into the shallow, and the time spent is short.
- the reflector is identical in structure to the accelerator and there is also a spatial focus point. The ions of different energies at the focus will return to this focus position after reflection, which realizes the energy focusing of the ions.
- the essence of the reflector is to increase the flying distance of the ions while ensuring the focus of the ion space.
- the longer the flight distance the easier it is to separate ions of different masses. Therefore, time-of-flight mass spectrometry with double reflection or even three reflections has been developed.
- the current multi-reflection time-of-flight mass spectrometry will continue to disperse as the number of reflections increases, so it is difficult to further increase the number of reflections.
- the traditional multiple-reflection time-of-flight mass spectrometry ions cannot converge, so the ions cannot be separated for subsequent use. And this is what is needed in many scientific instruments.
- the focusing action prevents the ions from diverging, which greatly increases the flight time and thus the sensitivity of the instrument.
- the ions are still converged and can be measured in the next step, such as measuring the infrared light dissociation spectrum by another mass spectrometer in series, or measuring the photoelectron velocity spectrum.
- the present invention provides a high resolution time-of-flight mass spectrometer for multiple reflection, comprising an ion source (1), an accelerator (2), a reflector group (3), and a compensation reflection. (4) and detector (5).
- the ions are generated by the ion source and enter the dual field accelerator. After the emitter group continues to reflect, it reaches the compensation. The reflector is finally reflected by the compensating reflector and reaches the detector to realize the detection process.
- Multi-reflection high-resolution time-of-flight mass spectrometer provided by the present invention, the reflector group
- the multi-reflection high-resolution time-of-flight mass spectrometer provided by the present invention the ion source
- the ion source (1) is one of an electron bombardment ion source, a photoionization ion source, and an electrospray ion source.
- the ion source (1) can ionize the solid, gas, and liquid samples and send them to the accelerator (2); the ion reaction product can also be sent to the accelerator's ion reaction device, and the ion photodissociation device can provide multiple reflections provided by the present invention.
- the multi-reflection high-resolution time-of-flight mass spectrometer provided by the present invention, the function of the compensating reflector (4) is to focus the multi-reflected ions on the detector; the axis thereof and the "accelerator-reflector group" The axis is at a small angle, and the ions are rotated a small angle during the reflection process, eventually focusing on the detector.
- the present invention provides a multi-reflection high-resolution time-of-flight mass spectrometer, wherein the detector (5) is a device for converting ion bombardment into an electrical signal, such as a microchannel plate, electron multiplication Device.
- the beneficial effects of the present invention are that the present invention can infinitely increase the number of reflections and place the ions in an in-focus state.
- the reflector group is not attached to the grid, which avoids losses when the ions are repeatedly passed through.
- the ions are not lost during the reflection process, so the sensitivity of the instrument is not lowered.
- Due to the extended flight time the resolution can be greatly improved.
- Theoretical calculations show that the resolution of the mass spectrometer can reach more than 10,000.
- ions can be further focused to specific locations for further experiments, such as measuring photoelectron velocity spectra.
- Figure 1 is a schematic illustration of the construction of a multi-reflection high resolution time-of-flight mass spectrometer of the present invention.
- (1) is the ion source
- (2) is the accelerator
- (3) is the reflector group
- (4) is the compensation reflector
- (5) is the detector.
- a multi-reflection high-resolution time-of-flight mass spectrometer of the present invention is composed of an ion source, a two-field accelerator, a reflector group composed of two reflectors facing each other, an MCP, a detector, and the like.
- the ions are generated by the ion source and enter the two-field accelerator.
- the reflector 1 is in a field-free state. After the ions pass through the reflector 1, an electric field is applied. After the ions are reflected by the reflector 2, they are again reflected by the reflector 1. As long as the voltages on the reflectors 1 and 2 are continuously applied, the ions are repeatedly reflected between 1, 2, and the flight time is continuously increased.
- the reflector 1 coincides with the spatial focus of the reflector 2.
- the voltage of the reflector 2 is adjusted to the field-free mode to extract the ions.
- the ions can be focused again for other uses.
- the reflected ions will be focused on the other side of the reflector focus, and the distance from the focus of the reflector is equal to the focus of the accelerator and the focus of the reflector. the distance.
- the spatial focus of the two reflectors in the reflector group is at the same point, at the center of the reflector group.
- the spatial focus point of the accelerator can be set at any position in the opposite space of the two reflectors in the reflector group according to the actual space size.
- the ions are alternately focused on the center of the reflector focus.
- the distance is at a point that is the distance between the accelerator focus and the reflector focus.
- the reflector voltage is removed and the ions are incident on the compensating reflector.
- the ions are finally focused by adjusting the parameters of the compensating reflector
- the invention can be applied to mass spectrometry, using ions to reciprocally reflect in a relative set of reflectors, and simultaneously utilizing the self-focusing effect of the meshless reflector to prevent ions from diverging, thereby greatly improving flight time and thereby improving instrument sensitivity. .
Abstract
Description
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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AU2013374169A AU2013374169B2 (en) | 2013-01-18 | 2013-05-30 | Multi-reflection high-resolution time of flight mass spectrometer |
Applications Claiming Priority (2)
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CN201310019177.1 | 2013-01-18 | ||
CN2013100191771A CN103065921A (zh) | 2013-01-18 | 2013-01-18 | 一种多次反射的高分辨飞行时间质谱仪 |
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WO2014110697A1 true WO2014110697A1 (zh) | 2014-07-24 |
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PCT/CN2013/000637 WO2014110697A1 (zh) | 2013-01-18 | 2013-05-30 | 一种多次反射的高分辨飞行时间质谱仪 |
Country Status (3)
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CN (1) | CN103065921A (zh) |
AU (1) | AU2013374169B2 (zh) |
WO (1) | WO2014110697A1 (zh) |
Cited By (19)
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US10593533B2 (en) | 2015-11-16 | 2020-03-17 | Micromass Uk Limited | Imaging mass spectrometer |
US10629425B2 (en) | 2015-11-16 | 2020-04-21 | Micromass Uk Limited | Imaging mass spectrometer |
US10636646B2 (en) | 2015-11-23 | 2020-04-28 | Micromass Uk Limited | Ion mirror and ion-optical lens for imaging |
US10741376B2 (en) | 2015-04-30 | 2020-08-11 | Micromass Uk Limited | Multi-reflecting TOF mass spectrometer |
US10950425B2 (en) | 2016-08-16 | 2021-03-16 | Micromass Uk Limited | Mass analyser having extended flight path |
US11049712B2 (en) | 2017-08-06 | 2021-06-29 | Micromass Uk Limited | Fields for multi-reflecting TOF MS |
US11081332B2 (en) | 2017-08-06 | 2021-08-03 | Micromass Uk Limited | Ion guide within pulsed converters |
US11205568B2 (en) | 2017-08-06 | 2021-12-21 | Micromass Uk Limited | Ion injection into multi-pass mass spectrometers |
US11211238B2 (en) | 2017-08-06 | 2021-12-28 | Micromass Uk Limited | Multi-pass mass spectrometer |
US11239067B2 (en) | 2017-08-06 | 2022-02-01 | Micromass Uk Limited | Ion mirror for multi-reflecting mass spectrometers |
US11295944B2 (en) | 2017-08-06 | 2022-04-05 | Micromass Uk Limited | Printed circuit ion mirror with compensation |
US11309175B2 (en) | 2017-05-05 | 2022-04-19 | Micromass Uk Limited | Multi-reflecting time-of-flight mass spectrometers |
US11328920B2 (en) | 2017-05-26 | 2022-05-10 | Micromass Uk Limited | Time of flight mass analyser with spatial focussing |
US11342175B2 (en) | 2018-05-10 | 2022-05-24 | Micromass Uk Limited | Multi-reflecting time of flight mass analyser |
US11367608B2 (en) | 2018-04-20 | 2022-06-21 | Micromass Uk Limited | Gridless ion mirrors with smooth fields |
US11587779B2 (en) | 2018-06-28 | 2023-02-21 | Micromass Uk Limited | Multi-pass mass spectrometer with high duty cycle |
US11621156B2 (en) | 2018-05-10 | 2023-04-04 | Micromass Uk Limited | Multi-reflecting time of flight mass analyser |
US11817303B2 (en) | 2017-08-06 | 2023-11-14 | Micromass Uk Limited | Accelerator for multi-pass mass spectrometers |
US11881387B2 (en) | 2018-05-24 | 2024-01-23 | Micromass Uk Limited | TOF MS detection system with improved dynamic range |
Families Citing this family (3)
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CN103065921A (zh) * | 2013-01-18 | 2013-04-24 | 中国科学院大连化学物理研究所 | 一种多次反射的高分辨飞行时间质谱仪 |
CN108037525B (zh) * | 2017-11-29 | 2019-06-07 | 厦门大学 | 一种用于质谱和光电子速度成像共同探测的装置 |
CN110739200B (zh) * | 2018-07-20 | 2022-04-29 | 北京雪迪龙科技股份有限公司 | 一种飞行时间质谱仪信号聚焦的方法 |
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US5689111A (en) * | 1995-08-10 | 1997-11-18 | Analytica Of Branford, Inc. | Ion storage time-of-flight mass spectrometer |
CN107833823B (zh) * | 2005-10-11 | 2021-09-17 | 莱克公司 | 具有正交加速的多次反射飞行时间质谱仪 |
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2013
- 2013-01-18 CN CN2013100191771A patent/CN103065921A/zh active Pending
- 2013-05-30 AU AU2013374169A patent/AU2013374169B2/en active Active
- 2013-05-30 WO PCT/CN2013/000637 patent/WO2014110697A1/zh active Application Filing
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CN2622854Y (zh) * | 2003-05-20 | 2004-06-30 | 中国科学院安徽光学精密机械研究所 | 直线多次反射式飞行时间质谱仪 |
CN1853255A (zh) * | 2003-06-21 | 2006-10-25 | 莱克公司 | 多反射飞行时间质谱仪及使用方法 |
CN103065921A (zh) * | 2013-01-18 | 2013-04-24 | 中国科学院大连化学物理研究所 | 一种多次反射的高分辨飞行时间质谱仪 |
Cited By (20)
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---|---|---|---|---|
US10741376B2 (en) | 2015-04-30 | 2020-08-11 | Micromass Uk Limited | Multi-reflecting TOF mass spectrometer |
US10593533B2 (en) | 2015-11-16 | 2020-03-17 | Micromass Uk Limited | Imaging mass spectrometer |
US10629425B2 (en) | 2015-11-16 | 2020-04-21 | Micromass Uk Limited | Imaging mass spectrometer |
US10636646B2 (en) | 2015-11-23 | 2020-04-28 | Micromass Uk Limited | Ion mirror and ion-optical lens for imaging |
US10950425B2 (en) | 2016-08-16 | 2021-03-16 | Micromass Uk Limited | Mass analyser having extended flight path |
US11309175B2 (en) | 2017-05-05 | 2022-04-19 | Micromass Uk Limited | Multi-reflecting time-of-flight mass spectrometers |
US11328920B2 (en) | 2017-05-26 | 2022-05-10 | Micromass Uk Limited | Time of flight mass analyser with spatial focussing |
US11295944B2 (en) | 2017-08-06 | 2022-04-05 | Micromass Uk Limited | Printed circuit ion mirror with compensation |
US11211238B2 (en) | 2017-08-06 | 2021-12-28 | Micromass Uk Limited | Multi-pass mass spectrometer |
US11239067B2 (en) | 2017-08-06 | 2022-02-01 | Micromass Uk Limited | Ion mirror for multi-reflecting mass spectrometers |
US11205568B2 (en) | 2017-08-06 | 2021-12-21 | Micromass Uk Limited | Ion injection into multi-pass mass spectrometers |
US11081332B2 (en) | 2017-08-06 | 2021-08-03 | Micromass Uk Limited | Ion guide within pulsed converters |
US11049712B2 (en) | 2017-08-06 | 2021-06-29 | Micromass Uk Limited | Fields for multi-reflecting TOF MS |
US11756782B2 (en) | 2017-08-06 | 2023-09-12 | Micromass Uk Limited | Ion mirror for multi-reflecting mass spectrometers |
US11817303B2 (en) | 2017-08-06 | 2023-11-14 | Micromass Uk Limited | Accelerator for multi-pass mass spectrometers |
US11367608B2 (en) | 2018-04-20 | 2022-06-21 | Micromass Uk Limited | Gridless ion mirrors with smooth fields |
US11342175B2 (en) | 2018-05-10 | 2022-05-24 | Micromass Uk Limited | Multi-reflecting time of flight mass analyser |
US11621156B2 (en) | 2018-05-10 | 2023-04-04 | Micromass Uk Limited | Multi-reflecting time of flight mass analyser |
US11881387B2 (en) | 2018-05-24 | 2024-01-23 | Micromass Uk Limited | TOF MS detection system with improved dynamic range |
US11587779B2 (en) | 2018-06-28 | 2023-02-21 | Micromass Uk Limited | Multi-pass mass spectrometer with high duty cycle |
Also Published As
Publication number | Publication date |
---|---|
CN103065921A (zh) | 2013-04-24 |
AU2013374169B2 (en) | 2017-06-01 |
AU2013374169A1 (en) | 2015-01-15 |
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