WO2002101788A1 - Dispositif de spectrometrie de masse de liquide refroidisseur - Google Patents
Dispositif de spectrometrie de masse de liquide refroidisseur Download PDFInfo
- Publication number
- WO2002101788A1 WO2002101788A1 PCT/JP2002/005540 JP0205540W WO02101788A1 WO 2002101788 A1 WO2002101788 A1 WO 2002101788A1 JP 0205540 W JP0205540 W JP 0205540W WO 02101788 A1 WO02101788 A1 WO 02101788A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- block
- desolvation
- cold spray
- temperature
- mass spectrometer
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0468—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components with means for heating or cooling the sample
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/001—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means incorporating means for heating or cooling, e.g. the material to be sprayed
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0431—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components for liquid samples
- H01J49/044—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components for liquid samples with means for preventing droplets from entering the analyzer; Desolvation of droplets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/10—Ion sources; Ion guns
- H01J49/16—Ion sources; Ion guns using surface ionisation, e.g. field-, thermionic- or photo-emission
- H01J49/165—Electrospray ionisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/0255—Discharge apparatus, e.g. electrostatic spray guns spraying and depositing by electrostatic forces only
Definitions
- the present invention relates to a mass spectrometer, and more particularly, to a cold spray mass spectrometer capable of ionizing a sample at a low temperature.
- electrospray The phenomenon in which an electrically conductive liquid placed in a strong electric field sprays spontaneously from the tip of the capillary by the action of an electric field is called electrospray.
- electrospray electrospray
- FIG. 1 shows a conventional electrospray mass spectrometer.
- reference numeral 31 denotes a solution sample supply source such as a liquid chromatograph (LC) device or a solution reservoir.
- the solution sample (for example, the LC mobile phase) of the solution sample supply source 31 is sent to the capillary capillary 32 by a pump (not shown) or the like.
- the capillary 32 is made of metal and has an inner diameter of 30 to 100 m and an outer diameter of 150 to 250.
- the solution sample sent to the capillary 32 is driven by an LC pump or a capillary phenomenon, is sucked into the capillary 32, and reaches the tip of the capillary 32.
- a high voltage of several kV is applied between the capillary 32 and the counter electrode 34 of the mass spectrometer 33, and a strong electric field is formed.
- the solution sample in the capillary 32 is electrostatically sprayed under atmospheric pressure into the space between the capillary 32 and the counter electrode 34, and is dispersed in the atmosphere as charged droplets .
- the flow rate of the solution sample is 1 to 10 microliters per minute.
- the charged droplet generated at this time is Since the solvent particles are clustered around the sample molecules, the particles are clustered, so if heat is applied to vaporize and remove the solvent molecules, only the ions of the sample molecules can be obtained.
- a method for producing sample ions from charged droplets is to supply nitrogen gas heated to about 70 ° C to the space between the capillary 32 and the counter electrode 34, and electrostatically spray the charged droplets there. Or the sample provided in the counter electrode 34 of the mass spectrometer 33.
- the orifice 35 is heated to about 80 ° C and its radiant heat or heat conduction is obtained.
- ion evaporation For vaporizing the solvent of the charged droplets.
- the sample ions generated by the ion evaporation are taken into the mass spectrometer 33 from the sampling orifice 35 provided in the counter electrode 34.
- a differential exhaust wall is configured to introduce sample ions under atmospheric pressure into the vacuum mass spectrometer 33. That is, a section surrounded by the sampling orifice 35 and the gap orifice 36 is exhausted to about 2 O O Pa by a rotary pump (RP) (not shown).
- the section surrounded by the gap orifice 36 and the partition 37 is evacuated to about 1 Pa by a turbo-molecular (not shown) pump (TMP).
- TMP turbo-molecular pump
- the latter stage of the partition 37 is evacuated by TMP to about 10 to 3 Pa, and the mass spectrometer 38 is placed.
- a ring lens 39 for preventing diffusion of sample ions is placed in the low vacuum section surrounded by the sampling orifice 35 and the skimmer orifice 36. Is a positive voltage, and a negative voltage is applied when the sample ion is negative.
- an ion guide 40 for guiding sample ions to the mass spectrometer 38 is placed, and a high-frequency voltage is applied.
- recent systems In order to be able to handle samples with a large flow rate of 10 to 100 microliters / minute, such as the mobile phase of the sample, a sheath tube through which the nebulizing gas can flow around the capillary 32 is installed.
- a new type of electrospray '' ion source configured to nebulize a sample solution with a large flow rate of 10 microliters or more that cannot be atomized by nebulizing gas completely and forcibly by nebulizing gas Has also appeared.
- the feature of the electrospray ion source is that it is a very soft ionization method that does not apply high heat or collide high energy particles when ionizing sample molecules. Therefore, highly polar biopolymers such as peptides, proteins, and nucleic acids can be easily ionized as polyvalent ions with almost no destruction. Also, since it is a multiply-charged ion, it can be measured with a relatively small mass spectrometer even if it has a molecular weight of 10,000 or more.
- the characteristic of such a cold spray mass spectrometer is, above all, that the nebulizing gas and the desolvation chamber are cooled with a refrigerant such as liquid nitrogen to minimize the heat applied to the charged droplets. .
- a refrigerant such as liquid nitrogen
- the desolvation chamber is directly cooled with liquid nitrogen, so it is too cold to set the temperature of the desolvation chamber to the optimal temperature range for measurement. It took a long time.
- the cooling gas for cooling the desolvation chamber directly flows into the ionization chamber, the airflow in the ionization chamber was disturbed, and the ion beam was difficult to stabilize.
- the present invention has been made in view of the above points, and its purpose is to easily control the temperature of the desolvation block 3 and to prevent the occurrence of water condensation and electric leakage for a long time. Another object of the present invention is to provide an easy-to-use cold spray mass spectrometer capable of performing stable measurement without any problem.
- the cold spray mass spectrometer according to the present invention sprays a sample solution at a low temperature, removes the solvent, and performs mass spectrometry.
- mass spectrometry In performing cold spray mass spectrometry,
- a desolvation block having a passage through which charged droplets of the sample solution sprayed from the tip of the needle pipe pass, and removing solvent from the charged droplets passing through the passage;
- the desolvation block can be controlled to any temperature.
- FIG. 1 is a diagram showing a conventional electrospray mass spectrometer.
- FIG. 2 is a diagram showing a conventional cold spray mass spectrometer.
- FIG. 3 is a diagram showing one embodiment of the cold spray mass spectrometer according to the present invention.
- FIG. 4 is a view showing another embodiment of the cold spray mass spectrometer according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 3 shows an embodiment of the cold spray mass spectrometer according to the present invention.
- A shows a top view of the cold spray mass spectrometer
- (b) shows a side view of the cold spray mass spectrometer from the side.
- 1 is an ionization chamber.
- a high voltage is applied inside the ionization chamber 1 to spray the sample solution electrostatically.
- a desolvation block 3 for desolvating charged droplets electrostatically sprayed from the tip of the needle pipe 8.
- the needle pipe 8 forms a coaxial double pipe with a sheath pipe 24 through which nebulizing gas for assisting electrostatic spraying is passed.
- a heater 4 for heating the desolvation block 3 and a temperature sensor 5 for detecting the temperature of the desolvation block 3 are embedded in the block wall of the desolvation block 3.
- the desolvation block 3 has a heating passage hole 10 for desolvating the charged droplet at a high temperature and a cooling passage hole 11 for desolvating the charged droplet at a low temperature.
- the position of the tip of the needle valve 8 can be moved or moved by the position adjustment knob 9 on the entrance side of the heating passage hole 10 or on the entrance side of the cooling passage hole 11. It has become. This is to make it possible to arbitrarily select the usual electrospray ionization method and cold spray ionization method.
- a bypass rod 2 for bypassing the charged droplet is provided so that the charged droplet that has been electrostatically sprayed does not immediately reach the first orifice 6. 6 are provided.
- the solvent that has condensed on the chamber wall of the ionization chamber 1 and the excess sample solution sprayed from the needle pipe 8 pass through the waste liquid line 22 from the ionization chamber 1 to the outside. Is discharged toward a drain (not shown).
- a differential pumping wall is configured to introduce the sample ions desolvated in the desolvation block 3 under atmospheric pressure into the vacuum mass spectrometer.
- the section surrounded by the first orifice 6 and the second orifice 7 is exhausted to about 200 Pa by a low speed pump (RP) not shown.
- a section surrounded by the second orifice 7 and a partition (not shown) is evacuated to about 1 Pa by a turbo 'molecular' pump (TMP) not shown.
- TMP turbo 'molecular' pump
- the sample that has been desolvated in the desolvation block 3 and has been ionized is taken into the mass spectrometer from the first orifice 6.
- a positive voltage is applied when the sample ion is positive, and a negative voltage is applied when the sample ion is negative.
- Ring lens 23 is placed, and is structured to prevent diffusion of sample ions.
- an ion guide 21 for guiding sample ions to the mass spectrometer 38 is placed, and a high-frequency voltage is applied. .
- the heater 4 When performing measurement in the cold spray / ionization mode, cool the nebulizing nitrogen gas 17 supplied from the nitrogen cylinder 18 to about 20 ° C in a refrigerator 20 before cooling.
- the desolvation block is blown out from the sheath pipe 24 and the cooling nitrogen gas 15 supplied from the liquid nitrogen jar 19 is sprayed directly on the block wall of the desolvation block 3 through the insulating pipe 1. Cool the temperature of step 3 and control the charged droplets of the sample so that no heat is applied during the measurement.
- the position of the tip of the needle pipe 8 is adjusted to the cooling passage hole 11 side by the position adjusting knob 9, and the charged droplet is desolvated by passing through the cooling passage hole 11.
- the heater 4 may be operated as appropriate while cooling with the cooling nitrogen gas 15.
- the nebulizing nitrogen gas 17 supplied from the nitrogen cylinder 18 is jetted out of the sheath tube 24 at room temperature and the liquid
- the supply of cooling nitrogen gas 15 from the nitrogen jar 19 is stopped, and the desolvation block 3 is heated to 100 to 300 ° C by the heater 4 to apply heat to the charged droplets of the sample during measurement. Control so that this At this time, the position of the tip of the dollar pipe 8 is adjusted to the heating passage hole 10 side by the position adjustment knob 9, and the charged droplet is desolvated by passing through the heating passage hole 10.
- the cold spray ionization mode and the normal electrospray ionization mode can be arbitrarily switched.
- a second chamber 2 surrounded by a case 13 is provided.
- a needle pipe 8 a first orifice 6, a second orifice 7, and the like are provided.
- the wiring for the high-voltage power supply for applying the voltage, the wiring connection part 14 for the heater 14 and the temperature sensor 5, etc. are housed.
- a dry purge gas is constantly supplied from a gas source (not shown) so that when the desolvation block 3 is cooled, moisture is attracted from outside to prevent dew condensation.
- FIG. 4 shows another embodiment of the cold spray mass spectrometer according to the present invention.
- (A) shows a top view of the cold spray mass spectrometer, and (b) shows a side view of the cold spray mass spectrometer from the side.
- reference numeral 1 denotes an ionization chamber. Inside the ionization chamber 1, there is a needle pipe 8 to which a high voltage is applied for electrostatically spraying the sample solution, and a desorber for desolvating charged droplets electrostatically sprayed from the tip of the needle pipe 8.
- a solvent block 3 is provided.
- the needle pipe 8 constitutes a coaxial double pipe by a sheath pipe 24 through which nebulizing gas for assisting electrostatic spraying is passed.
- a heater 4 for heating the desolvation block 3 and a temperature sensor 5 for detecting the temperature of the desolvation block 3 are embedded in the block wall of the desolvation block 3.
- the desolvation block 3 has a heating passage hole 10 for desolvating the charged droplet at a high temperature and a cooling passage hole 11 for desolvating the charged droplet at a low temperature.
- the position of the tip of the needle valve 8 can be arranged on the entrance side of the heating passage hole 10 by the position adjustment knob 9, It can be arranged or moved on the entrance side of the cooling passage hole 11. This is to make it possible to arbitrarily select between the normal electrospray ionization method and the cold spray ionization method.
- a bypass rod 2 for bypassing the charged droplet is provided so that the charged droplet that has been electrostatically sprayed does not immediately reach the first orifice 6. 6 are provided.
- the solvent that has condensed on the chamber wall of the ionization chamber 1 and the excess sample solution sprayed from the needle pipe 8 pass through the waste liquid line 22 from the ionization chamber 1 to the outside. Is discharged toward a drain (not shown).
- a differential pumping wall is configured to introduce the sample ions desolvated in the desolvation block 3 under atmospheric pressure into the vacuum mass spectrometer. That is, a section surrounded by the first orifice 6 and the second orifice 7 is exhausted to about 200 Pa by a low-pressure pump (RP) (not shown). A section surrounded by the second orifice 7 and a partition (not shown) is evacuated to about 1 Pa by a turbo-molecular pump (TMP) (not shown). Further, the rear stage of the not-shown partition wall is evacuated to about 10 to 3 Pa by TMP, and a not-shown mass analysis unit is placed.
- RP low-pressure pump
- TMP turbo-molecular pump
- the sample that has been desolvated by the desolvation block 3 and has been deionized is taken into the mass spectrometer from the first orifice 6.
- a positive voltage is applied when the sample ion is positive, and a negative voltage is applied when the sample ion is negative.
- a ring lens 23 is placed to prevent diffusion of sample ions.
- an ion guide 21 for guiding sample ions to the mass analyzer 38 is placed, and a high-frequency voltage is applied. I have.
- the nitrogen gas 17 for nebulizing supplied from the nitrogen cylinder 18 and the nitrogen gas 15 for cooling are supplied to the common refrigerator jar 20. After cooling to about 0 ° C, it is supplied to the sheath pipe 24 and the coolant flow path 25 formed in the block wall of the desolvation block 3, and the needle pipe 8 and the desolvation block 3 are simultaneously Let cool.
- the cooling nitrogen gas 15 flows through the refrigerant flow path 25, the gas flow in the ionization chamber 1 is not disturbed compared to the method in which liquid nitrogen is directly blown to the desolvation block 3, and An ion beam can be supplied stably.
- the position of the distal end of the needle pipe 8 is adjusted to the cooling passage hole 11 side by the position adjusting knob 9, and the charged droplet is desolvated by passing through the cooling passage hole 11.
- the heater 4 may be operated as appropriate while cooling with the cooling nitrogen gas 15.
- the nebulizing nitrogen gas 17 supplied from the nitrogen cylinder 18 is jetted out of the sheath tube 24 at room temperature and the liquid
- the supply of cooling nitrogen gas 15 from the nitrogen jar 19 was stopped, and the desolvation block 3 was heated to 100 to 300 ° C by the heater 14. Control so that heat is applied.
- the position of the tip of the needle pipe 8 is adjusted to the heating passage hole 10 side by the position adjustment knob 9, and the charged droplet passes through the heating passage hole 10 to remove the solvent.
- the cold spray ionization mode and the normal electrospray ionization mode can be arbitrarily switched.
- a second chamber 2 surrounded by a case 13 is provided.
- a needle pipe 8, a first orifice 6, a second orifice 7, and the like are provided.
- Apply voltage The wiring of the high voltage power supply and the wiring connection part 14 of the heater 4 and the temperature sensor 5 are stored.
- the dry nitrogen gas for cooling 15 passing through the coolant channel 25 provided on the block wall of the desolvation block 3 is passed through the cooling gas outlet 16.
- the inside of the second room 2 is circulated, and the inside of the second room 2 is purged by effectively using the used cooling dry nitrogen gas 15.
- Needle pipe 8 first orifice 6, second orifice 7, etc.Prevents electrical leakage from high voltage power supply wiring that applies high voltage to heater 4, temperature sensor 5, etc. I do.
- the cooling gas is used as the cooling gas, but an inert gas other than nitrogen gas may be used.
- the drying gas introduced into the second room shown in the second embodiment does not necessarily need to be used cooling gas, and a gas source may be provided separately.
- the cooling gas may be cooled by a cooling means other than the refrigerator, for example, a dry ice bath combining dry ice and an organic solvent.
- the refrigerant flow path 25 does not necessarily need to be formed in the block wall of the desolvation block 3, and is located in the vicinity of the desolvation block 3 if it can effectively cool the desolvation block 3. It may be located anywhere.
- the refrigerant for cooling the desolvation block 3 does not necessarily have to be a disposable gas, and may be used by circulating a temperature-controlled fluid.
- the cooling means for cooling the desolvation block the above-described nebulizing gas may be used.
- the cooling nitrogen gas 15 Need not flow through the refrigerant flow path 25 of the desolvation block 3.
- a device for cooling / heating the desolvation block, a temperature sensor for detecting the temperature of the desolvation block, and electric wiring and the like are housed. Since the second chamber 2 is purged with a dry gas, the temperature of the desolvent block 3 can be easily controlled, and there is no water condensation or electric leakage over a long period of time, and the system is stable. This has made it possible to provide an easy-to-use cold spray mass spectrometer that can perform measurement with ease.
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Electron Tubes For Measurement (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/343,329 US6977369B2 (en) | 2001-06-08 | 2002-06-05 | Cold spray mass spectrometric device |
EP02738622A EP1394836B1 (en) | 2001-06-08 | 2002-06-05 | Cold spray mass spectrometric device |
JP2003504438A JP3786417B2 (ja) | 2001-06-08 | 2002-06-05 | コールドスプレー質量分析装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001174265 | 2001-06-08 | ||
JP2001-174265 | 2001-06-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002101788A1 true WO2002101788A1 (fr) | 2002-12-19 |
Family
ID=19015574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/005540 WO2002101788A1 (fr) | 2001-06-08 | 2002-06-05 | Dispositif de spectrometrie de masse de liquide refroidisseur |
Country Status (4)
Country | Link |
---|---|
US (1) | US6977369B2 (ja) |
EP (1) | EP1394836B1 (ja) |
JP (1) | JP3786417B2 (ja) |
WO (1) | WO2002101788A1 (ja) |
Cited By (6)
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JP2004139962A (ja) * | 2002-08-19 | 2004-05-13 | Jeol Ltd | エレクトロスプレー質量分析装置 |
EP1752764A1 (en) * | 2004-05-18 | 2007-02-14 | Yamanashi TLO Co., Ltd. | Method and apparatus for analysis through selective cleavage of noncovalent bond, etc. of biopolymer |
CN104807876A (zh) * | 2015-05-27 | 2015-07-29 | 中国工程物理研究院材料研究所 | 用于放射性物质的电喷雾质谱联用系统及其使用方法 |
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US9230786B1 (en) | 2014-06-11 | 2016-01-05 | Bruker Daltonics, Inc. | Off-axis channel in electrospray ionization for removal of particulate matter |
US10226791B2 (en) | 2017-01-13 | 2019-03-12 | United Technologies Corporation | Cold spray system with variable tailored feedstock cartridges |
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2002
- 2002-06-05 JP JP2003504438A patent/JP3786417B2/ja not_active Expired - Lifetime
- 2002-06-05 EP EP02738622A patent/EP1394836B1/en not_active Expired - Lifetime
- 2002-06-05 WO PCT/JP2002/005540 patent/WO2002101788A1/ja active Application Filing
- 2002-06-05 US US10/343,329 patent/US6977369B2/en not_active Expired - Lifetime
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US5368727A (en) * | 1991-10-03 | 1994-11-29 | Hitachi, Ltd. | Liquid chromatograph mass spectrometer |
JPH1055776A (ja) * | 1996-08-09 | 1998-02-24 | Jeol Ltd | イオン源 |
JP2000285847A (ja) * | 1999-03-30 | 2000-10-13 | Japan Science & Technology Corp | エレクトロスプレー質量分析方法及びその装置 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004139962A (ja) * | 2002-08-19 | 2004-05-13 | Jeol Ltd | エレクトロスプレー質量分析装置 |
EP1752764A1 (en) * | 2004-05-18 | 2007-02-14 | Yamanashi TLO Co., Ltd. | Method and apparatus for analysis through selective cleavage of noncovalent bond, etc. of biopolymer |
EP1752764A4 (en) * | 2004-05-18 | 2010-09-22 | Univ Yamanashi | METHOD AND DEVICE FOR ANALYZING OVER SELECTIVE CLEARANCE OF A NONCOVALENT BINDING ETC. A BIOPOLYMER |
JP2016524521A (ja) * | 2013-04-19 | 2016-08-18 | シーメンス・ヘルスケア・ダイアグノスティックス・インコーポレイテッド | 無接触微小滴ディスペンサおよび方法 |
US10486152B2 (en) | 2013-04-19 | 2019-11-26 | Siemens Healthcare Diagnostics Inc. | Non-contact micro droplet dispenser and method |
CN104807876A (zh) * | 2015-05-27 | 2015-07-29 | 中国工程物理研究院材料研究所 | 用于放射性物质的电喷雾质谱联用系统及其使用方法 |
CN104807876B (zh) * | 2015-05-27 | 2017-03-15 | 中国工程物理研究院材料研究所 | 用于放射性物质的电喷雾质谱联用系统及其使用方法 |
WO2018167933A1 (ja) * | 2017-03-16 | 2018-09-20 | 株式会社島津製作所 | 荷電粒子の供給制御方法及び装置 |
JPWO2018167933A1 (ja) * | 2017-03-16 | 2019-11-07 | 株式会社島津製作所 | 荷電粒子の供給制御方法及び装置 |
CN115301466A (zh) * | 2022-07-12 | 2022-11-08 | 天津国科医工科技发展有限公司 | 一种模块化质谱基质喷涂装置及方法 |
CN115301466B (zh) * | 2022-07-12 | 2024-03-22 | 天津国科医工科技发展有限公司 | 一种模块化质谱基质喷涂装置及方法 |
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EP1394836A1 (en) | 2004-03-03 |
EP1394836B1 (en) | 2011-09-21 |
US20030168586A1 (en) | 2003-09-11 |
EP1394836A4 (en) | 2007-06-27 |
JP3786417B2 (ja) | 2006-06-14 |
US6977369B2 (en) | 2005-12-20 |
JPWO2002101788A1 (ja) | 2004-09-30 |
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