CN203941876U - Ion source device under atmospheric pressure - Google Patents
Ion source device under atmospheric pressure Download PDFInfo
- Publication number
- CN203941876U CN203941876U CN201420387048.8U CN201420387048U CN203941876U CN 203941876 U CN203941876 U CN 203941876U CN 201420387048 U CN201420387048 U CN 201420387048U CN 203941876 U CN203941876 U CN 203941876U
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- Prior art keywords
- ion source
- helical coil
- source device
- ion
- atmospheric pressure
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- 238000005452 bending Methods 0.000 claims abstract description 9
- 238000000375 direct analysis in real time Methods 0.000 claims description 3
- 238000012063 dual-affinity re-targeting Methods 0.000 claims description 3
- 238000000132 electrospray ionisation Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 abstract description 14
- 238000004949 mass spectrometry Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Electron Tubes For Measurement (AREA)
Abstract
The utility model provides ion source device under a kind of atmospheric pressure, and described ion source device comprises ion source, further comprises: helical coil, and described helical coil is arranged on the downstream of described ionogenic exit end, the axis bending of helical coil; Current source, described current source arranges between the head end and tail end of described helical coil.The utlity model has the advantages such as highly sensitive, solvent interference is minimum, and contribute to reduce vacuum degree requirement, the volume of mass spectrometry system.
Description
Technical field
The utility model relates to mass spectral analysis, particularly ion source device under atmospheric pressure.
Background technology
At present, in conventional electron spray or APCI ion source, in order to prevent the interference of solvent, in the process of design ion stream, adopt the mode of certain angle incident, with avoid solvent too much enter into mass spectrometer.Have again, in order to improve sensitivity, strengthen the perforated area of vacuum interface part.This technical scheme has been determined to have solved in degree solvent and has been disturbed and the low problem of sensitivity, but brings more deficiency thereupon, as:
1, ion is to enter at a certain angle in mass spectrometer, only has a small amount of ion to enter mass spectrometer, and ion admission rate is low; Further, having unavoidably some solvents enters in mass spectrometer;
2, the increase of vacuum interface part perforated area, correspondingly needs to improve the pumping speed of vacuum system, and then has brought the problems such as vacuum system is bulky.
Utility model content
In order to solve the deficiency in above-mentioned prior art scheme, the utility model provides a kind of highly sensitive, solvent to disturb ion source device under minimum atmospheric pressure, and the vacuum degree that contributes to reduce mass spectrometry system requires, volume.
The purpose of this utility model is achieved through the following technical solutions:
Ion source device under a kind of atmospheric pressure, described ion source device comprises ion source, it is characterized in that: described ion source device further comprises:
Helical coil, described helical coil is arranged on the downstream of described ionogenic exit end, the axis bending of helical coil;
Current source, described current source arranges between the head end and tail end of described helical coil.
According to above-mentioned ion source device, preferably, the axis bending 90 of described helical coil is spent.
According to above-mentioned ion source device, preferably, described helical coil adopts resistance wire to be coiled into.
According to above-mentioned ion source device, preferably, described ion source is electrospray ionization source, APCI, DART.
According to above-mentioned ion source device, preferably, described helical coil is partly around described ionogenic periphery.
Compared with prior art, the beneficial effect the utlity model has is:
1, adopt the method in magnetic field to guide the ion under atmospheric pressure, change the disordered motion track of ion, promote the ion-flow rate that enters into mass spectrometer, improved sensitivity for analysis;
2, adjustable Magnetic Field Design: can increase magnetic field intensity by motor current, thereby consume the lateral kinetic energy of ion, make the ion beam of electric discharge be tending towards focusing on;
3, bending helical coil setting, make the uncharged solvent straight line coil that flies out, and the bending under magnetic fields of charged ion is flown and enters into mass spectrometry system, only there is few solvent can enter mass spectrometry system, reduce widely the interference of solvent to system;
4, without increasing vacuum interface part perforated area, reduce the vacuum requirement of system, reduced the volume of mass spectrometry system.
Brief description of the drawings
With reference to accompanying drawing, disclosure of the present utility model will be easier to understand.Those skilled in the art hold intelligible: these accompanying drawings are only for illustrating the technical solution of the utility model, and are not intended to protection range of the present utility model to be construed as limiting.In figure:
Fig. 1 is the structural representation of ion source device under the atmospheric pressure of the utility model embodiment 1.
Embodiment
Fig. 1 and following declarative description optional execution mode of the present utility model how to implement and to reproduce the utility model with instruction those skilled in the art.In order to instruct technical solutions of the utility model, simplify or omitted some conventional aspects.Those skilled in the art should understand that be derived from these execution modes modification or replace will be in scope of the present utility model.Those skilled in the art should understand that following characteristics can combine to form multiple modification of the present utility model in every way.Thus, the utility model is not limited to following optional execution mode, and is only limited by claim and their equivalent.
Embodiment 1:
Fig. 1 has schematically provided the structure diagram of ion source device under the atmospheric pressure of the utility model embodiment, and as shown in Figure 1, described ion source device comprises:
Ion source 11, as electrospray ionization source, APCI, DART etc.;
Helical coil 21, described helical coil is arranged on the downstream of described ionogenic exit end, and upstream in mass spectrometer 41, and the axis bending of helical coil, as 60 degree, 90 degree;
Current source 31, described current source arranges between the head end and tail end of described helical coil.
The method of work of above-mentioned ion source device, described method of work comprises the following steps:
(A1) ion source outgoing ion, solvent is accompanied by described ion outgoing;
(A2) after helical coil energising, produce magnetic field, described ion deflects in helical coil, enters afterwards mass spectrometer 41, and described solvent rectilinear motion and the helical coil that flies out.
Embodiment 2:
According to ion source device and method of work thereof the application examples in mass spectrometry system under the atmospheric pressure of the utility model embodiment 1.
In this application examples, adopt electric spray ion source, the axis bending 90 of the helical coil that resistance wire is coiled into is spent, and current source is connected between the head end and tail end of coil, and electric current is adjustable.The part of coil is around the periphery of electric spray ion source, and the upstream of vacuum system in mass spectrometry system.
The course of work of the ion source device of the utility model embodiment, comprises the following steps:
Electric spray ion source outgoing ion, solvent is along with ion penetrates in the lump;
In the magnetic field that ion produces at helical coil, partially turn 90 degrees, enter into mass spectrometry system; And solvent linear running and the coil that flies out;
Motor current and improve the magnetic field intensity of helical coil, ion focuses in coil.
The benefit reaching according to the utility model embodiment 2 is: the curved design of helical coil has reduced solvent significantly to the adverse effect of measuring, and has improved ion simultaneously and has entered the amount of mass spectrometry system, and then improved detection sensitivity.
Claims (5)
1. an ion source device under atmospheric pressure, described ion source device comprises ion source, it is characterized in that: described ion source device further comprises:
Helical coil, described helical coil is arranged on the downstream of described ionogenic exit end, the axis bending of helical coil;
Current source, described current source arranges between the head end and tail end of described helical coil.
2. ion source device according to claim 1, is characterized in that: the axis bending 90 of described helical coil is spent.
3. ion source device according to claim 1, is characterized in that: described helical coil adopts resistance wire to be coiled into.
4. ion source device according to claim 1, is characterized in that: described ion source is electrospray ionization source, APCI, DART.
5. ion source device according to claim 1, is characterized in that: described helical coil is partly around described ionogenic periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420387048.8U CN203941876U (en) | 2014-07-05 | 2014-07-05 | Ion source device under atmospheric pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420387048.8U CN203941876U (en) | 2014-07-05 | 2014-07-05 | Ion source device under atmospheric pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203941876U true CN203941876U (en) | 2014-11-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420387048.8U Expired - Lifetime CN203941876U (en) | 2014-07-05 | 2014-07-05 | Ion source device under atmospheric pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203941876U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091751A (en) * | 2014-07-05 | 2014-10-08 | 宁波大学 | Under-atmosphere ion source device and working method thereof |
-
2014
- 2014-07-05 CN CN201420387048.8U patent/CN203941876U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091751A (en) * | 2014-07-05 | 2014-10-08 | 宁波大学 | Under-atmosphere ion source device and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151210 Address after: 201103 No. 900, Changning District, Shanghai, West Yan'an Road Patentee after: Wen Luhong Patentee after: Ningbo University Asset Management Company Limited Address before: 315211 Fenghua Road 818, Zhejiang, Ningbo Patentee before: Ningbo University |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151230 Address after: 315100, D building, room 655, Kexin building, 304-311 bachelor Road, Ningbo, Zhejiang, Yinzhou District Patentee after: NINGBO HUAYI NINGCHUANG INTELLIGENT SCIENCE & TECHNOLOGY CO., LTD. Address before: 201103 No. 900, Changning District, Shanghai, West Yan'an Road Patentee before: Wen Luhong Patentee before: Ningbo University Asset Management Company Limited |