CN106198709B - For the sample tray in universal laser ablation plasma mass spectrograph sample cell - Google Patents
For the sample tray in universal laser ablation plasma mass spectrograph sample cell Download PDFInfo
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- CN106198709B CN106198709B CN201610761548.7A CN201610761548A CN106198709B CN 106198709 B CN106198709 B CN 106198709B CN 201610761548 A CN201610761548 A CN 201610761548A CN 106198709 B CN106198709 B CN 106198709B
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- sample
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- pallet
- laser ablation
- arc
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- 238000000608 laser ablation Methods 0.000 title claims abstract description 22
- 230000002035 prolonged effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002000 scavenging effect Effects 0.000 abstract description 3
- 230000008685 targeting Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 239000000443 aerosol Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012491 analyte Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000000918 plasma mass spectrometry Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The present invention provides a kind of sample tray in universal laser ablation plasma mass spectrograph sample cell, support is coiled into the shape of a disc, pallet defines top and bottom, top surface offers two symmetrically arranged sample targets, sample targeting sunken inside at circular hole but is not passed through bottom surface, it is equipped with that two symmetrically arranged arcs are convex to be prolonged at the top of sample target, the convex upper surface of prolonging of arc is concordant with pallet top surface, is additionally provided with groove on tray side periphery.The present invention is placed in the sample cell of laser ablation plasma mass spectrograph, the fixation of sample suitable for laser ablation system sample pond, and by reducing cell volume, steady air flow direction keeps sample detection more accurate；Meanwhile the vortex phenomenon that gas carrier is formed in sample cell is reduced, gas carrier usage amount significantly reduces, and accelerates sample cell scavenging period, to reach the detection and analysis effect of fast accurate.
Description
Technical field
The present invention provides a kind of sample trays, especially a kind of to be used for universal laser ablation plasma mass spectrograph sample
Sample tray in product pond belongs to laser ablation plasma mass spectrograph field.
Background technique
Laser ablation has precision high, and small feature is lost in sample, is widely used in the neck such as geochemistry, material at this stage
In domain analysis.And in actual application, since sample specification is different, size difference is larger, how in larger sample cell
It fixes compared with small sample and obtains Accurate Analysis as researcher urgent problem to be solved, and use different fixed forms pair
The influence of experimental precision and accuracy also can not be ignored.
Laser ablation plasma mass spectrograph is the analyte aerosol generated by laser ablation, by gas carrier by gas
Colloidal sol, which is delivered in plasma mass spectrometry, carries out constituent content or ratio Analysis；After stopping laser ablation, same carrier gases are utilized
Body cleans sample cell, and to eliminate sample room pollution, 30-60 seconds scavenging periods are equipped between adjacent analysis point.It is large-scale
The cell volume that general laser degrades plasma mass spectrograph is relatively large, when sample to be tested size is smaller, in sample cell
Gas carrier whirlpool easy to form, and aerosol is precipitated in dead angle position, the aerosol of next sample is polluted, measuring accuracy is caused
And accuracy.Gas carrier clearance time is longer, gas carrier dosage is larger etc. caused by precipitating aerosol cause it is certain
The wasting of resources.In addition, there are biggish difference, laser ablations for the sample preparation thickness and laboratory standard specimen thickness of different experiments personnel
System spatial resolution with higher, different height equally affect the precision and accuracy of analysis test.
Chinese patent literature CN204536206U is disclosed in " a kind of rotating channel formula laser ablation pond ", the document by pair
The improvement that laser ablation pond overall structure carries out reaches the effect of precise measurement to reduce the actual analysis volume of sample surfaces
Fruit.But the design is not suitable for universal equipment, while replacement is degraded pond and needed to instrument to entirely degrading pond and being improved
Part is disassembled, and experiment difficulty is improved.
Therefore, problems of the prior art are, how under the premise of not introducing row new pollution, improve small sample and exist
Analysis measuring accuracy in large-scale general laser ablation plasma mass spectrograph.
Summary of the invention
Compared with prior art, the present invention provides one kind to be used for universal laser ablation plasma mass spectrograph sample cell
In sample tray by sample tray to the support fixed function of sample be that analysis sample and standard sample are in identical
In plane, lowering apparatus vertical space error；Meanwhile the pallet can effectively reduce cell volume, steady air flow direction, from
And achieve the effect that it is accurate, accurately detect；It reduces due to the whirlpool that cell volume is excessive, is generated by gas carrier；Reduce cleaning
Time, detection precision is improved, sample tray is particularly suitable for the detection and analysis of small samples.
Realize the technical solution that above-mentioned purpose of the present invention is taken are as follows:
A kind of sample tray in universal laser ablation plasma mass spectrograph sample cell, support are coiled into the shape of a disc,
Pallet defines that top and bottom, top surface are provided with sample target, and sample rake is recessed inwardly into circular hole from top surface but is not passed through bottom surface,
Sample rake is equipped with that arc is convex to be prolonged, and the convex upper surface of prolonging of the arc is concordant with pallet top surface, and convex prolong of arc is symmetrically arranged with
Two, two arcs are convex prolong between formed two bayonets.
There are two the sample target is symmetrical arranged.
Fluted, the top and bottom of groove perforation pallet are set on the tray side periphery.
The pallet is 54 mm disk of diameter, high 8 mm of disk.
The sample target is 25.4 mm of diameter.
The arc is convex to prolong wide 2 mm, 0.5 mm of thickness.
Spring is equipped in the circular hole, spring one end is fixed on specimen holder bottom, and the other end supports sample target bottom, sample
Sample to be tested is placed on seat, specimen holder is fixed on sample target by convex prolong of arc.
The pallet is integrally formed.
The pallet material is plastics or metal alloy.
Compared with prior art, the invention has the following advantages that the 1, present invention is suitable for universal laser ablation plasma
Constitution spectrometer；2, the whirlpool that gas carrier generates in sample cell is effectively reduced；3, clearance time is shortened；4, sample is effectively improved
Detect accuracy and accuracy；5, the configuration of the present invention is simple, manufacturing cost be low, strong applicability, economic value with higher.
Detailed description of the invention
Fig. 1 is sample tray structure top view provided by the present invention.
Fig. 2 is sample tray structure sectional view.
In figure: 1, pallet, 2, sample target, 3, arc is convex prolongs, 4, groove, 5, circular hole, 6, bayonet.
Specific embodiment
Detailed specific description done to the present invention below in conjunction with drawings and the specific embodiments, but protection scope of the present invention
It is not limited to following embodiment.
As provided by the present invention for the sample tray in universal laser ablation plasma mass spectrograph sample cell
Shown in top view 1, cross-sectional view 2, for pallet 1 at discoid, pallet defines that top and bottom, top surface are provided with sample target 2, sample
Rake 2 is recessed inwardly into circular hole 5 from top surface but is not passed through bottom surface, and for placing sample, sample rake 2 is equipped with that arc is convex to prolong 3, arc
It is convex to prolong 3 upper surfaces and 1 either flush of pallet, arc is convex prolong 3 be symmetrical arranged there are two, convex prolongs of two arcs forms two between 3
Bayonet 6, arc is convex to prolong 3 for fixing specimen holder, and sample is placed on specimen holder, and specimen holder goes to arc by 6 back spin of bayonet
It is convex to prolong 3 bottoms, thus, the convex 3 blocking specimen holders that prolong of arc move outward, play the role of fixed support sample, specimen holder bottom
It is additionally provided with spring, spring one end is fixedly connected on specimen holder bottom, and the other end is supported in 2 bottom of sample target, and specimen holder is in bullet
It is fixed on two at the top of sample target under spring active force arc is convex and prolong on 3.It is also provided on the disk side periphery of pallet 1 recessed
Slot 4, groove 4 are through to bottom surface from pallet top surface, to adapt to sample cell internal structure, are mounted on pallet 1 in sample cell.
Pallet 1 is 54 mm disk of diameter, high 8 mm of disk；Sample target 2 is symmetrically arranged with 2, and the circular hole 5 of sample target 2 is
25.4 hole mm of diameter, so that specimen holder can be placed and secured on sample target；Two arcs are convex on sample target 2 prolongs 3 wide 2 mm, thickness
0.5 mm, with 1 either flush of pallet.Pallet 1 is an integral molding structure；Plastics or metal alloy can be selected in 1 material of pallet.
When work, pallet 1 is placed in the sample cell of laser ablation plasma mass spectrograph, by 1 position of pallet
Appropriate adjustment with obtain in sample cell structure cooperation after, fixed tray 1；The specimen holder bottom for being placed with sample is provided with bullet
Spring structure, specimen holder are placed on sample target 2 by bayonet 6, are fixed on that arc is convex to be prolonged in 3 after specimen holder rotation, spring
One end is fixed on specimen holder, and the other end supports 2 bottom of sample target and then starts instrument so that sample is fixed on sample target 2
Device tests and analyzes sample.
The present invention reduces the cell volume of large-scale general laser ablation plasma mass spectrograph by setting pallet 1,
To achieve the effect that Accurate Analysis sample；Meanwhile the volume for reducing sample cell significantly reduces the carrier gas scale of construction being passed through, drop
Scavenging period between low adjacent analysis point substantially increases the accurate of sample detection while reducing gas carrier loss
Degree；Product is cheap, versatile；Support holder structure through the invention solves scientific research personnel and meets in actual tests operation
To general large-scale mass spectrograph cannot adapt to the detection needs of different size sample very well.
The content referred in above-described embodiment is the preferable embodiment of the present invention, not limitation of the invention, not
Under the premise of being detached from inventive concept of the present invention, any obvious replacement is within protection scope of the present invention.
Claims (7)
1. a kind of sample tray in universal laser ablation plasma mass spectrograph sample cell, support are coiled into the shape of a disc,
Be characterized in that: pallet defines top and bottom, and top surface is provided with sample target, and sample rake is recessed inwardly into circular hole but not from top surface
Across bottom surface, sample rake is equipped with that arc is convex to be prolonged, and the convex upper surface of prolonging of the arc is concordant with pallet top surface, and arc is convex to be prolonged pair
Claim setting there are two, two arcs are convex prolong between formed two bayonets；
Arc is convex to be adopted in fixed specimen holder, and sample is placed on specimen holder；
It is equipped with spring in the circular hole, spring one end is fixed on specimen holder bottom, and the other end supports sample target bottom, on specimen holder
Sample to be tested is placed, on specimen holder is fixed on that two arcs at the top of sample target are convex under spring action and prolongs；
Fluted, the top and bottom of groove perforation pallet are set on the tray side periphery.
2. sample tray according to claim 1, there are two the sample target is symmetrical arranged.
3. sample tray according to claim 1, the pallet is 54 mm disk of diameter, high 8 mm of disk.
4. sample tray according to claim 1, the sample target is 25.4 mm circular hole of diameter.
5. sample tray according to claim 1, the arc is convex to prolong wide 2 mm, 0.5 mm of thickness.
6. sample tray according to claim 1, the pallet is integrally formed.
7. sample tray according to claim 1, the pallet material is plastics or metal alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761548.7A CN106198709B (en) | 2016-08-30 | 2016-08-30 | For the sample tray in universal laser ablation plasma mass spectrograph sample cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610761548.7A CN106198709B (en) | 2016-08-30 | 2016-08-30 | For the sample tray in universal laser ablation plasma mass spectrograph sample cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106198709A CN106198709A (en) | 2016-12-07 |
| CN106198709B true CN106198709B (en) | 2019-06-18 |
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| CN201610761548.7A Active CN106198709B (en) | 2016-08-30 | 2016-08-30 | For the sample tray in universal laser ablation plasma mass spectrograph sample cell |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179411B (en) * | 2017-07-05 | 2019-01-29 | 北京毅新博创生物科技有限公司 | Multi-functional mass spectrum substrate target holder |
| CN111141811B (en) * | 2019-12-26 | 2020-10-16 | 中国科学院地质与地球物理研究所 | Target holder assembly of ion probe and method for preparing sample target of ion probe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206074510U (en) * | 2016-08-30 | 2017-04-05 | 中山大学 | For the sample tray in universal laser ablation plasma mass spectrograph sample cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3476373B2 (en) * | 1998-09-24 | 2003-12-10 | 東芝セラミックス株式会社 | Sample processor for highly sensitive analysis of impurities in siliconaceous analysis sample and analysis method using the same |
| CN102184832B (en) * | 2011-01-11 | 2012-07-25 | 西北大学 | Sample inlet device of laser ablation plasma mass spectrum |
| US8624199B2 (en) * | 2011-10-28 | 2014-01-07 | Fei Company | Sample block holder |
| CN203672702U (en) * | 2013-12-06 | 2014-06-25 | 宁波检验检疫科学技术研究院 | Sample pond for solid ablation with laser |
| CN104075932B (en) * | 2014-06-19 | 2016-08-24 | 袁洪林 | A kind of laser ablation sample room of many target position |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206074510U (en) * | 2016-08-30 | 2017-04-05 | 中山大学 | For the sample tray in universal laser ablation plasma mass spectrograph sample cell |
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