CN106198709A - Sample tray in universal laser ablation plasma mass spectrograph sample cell - Google Patents
Sample tray in universal laser ablation plasma mass spectrograph sample cell Download PDFInfo
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- CN106198709A CN106198709A CN201610761548.7A CN201610761548A CN106198709A CN 106198709 A CN106198709 A CN 106198709A CN 201610761548 A CN201610761548 A CN 201610761548A CN 106198709 A CN106198709 A CN 106198709A
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- tray
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Abstract
The present invention provides a kind of sample tray in universal laser ablation plasma mass spectrograph sample cell, torr is coiled into the shape of a disc, pallet defines end face and bottom surface, end face offers two symmetrically arranged sample targets, sample targeting sunken inside becomes circular hole but is not passed through bottom surface, sample target top is provided with that two symmetrically arranged arcs are convex to be prolonged, and arc is convex, and to prolong upper surface concordant with pallet top surface, and tray side periphery is additionally provided with groove.The present invention is positioned in the sample cell of laser ablation plasma mass spectrograph, it is adaptable in laser ablation system sample pond, sample is fixing, by reducing cell volume, steady air flow direction, makes sample detection more accurate；Meanwhile, reducing the vortex phenomenon that gas carrier is formed at sample cell, gas carrier usage amount significantly reduces, and accelerates sample cell scavenging period, thus reaches the detection analytical effect of fast accurate.
Description
Technical field
The invention provides a kind of sample tray, particularly a kind of for universal laser ablation plasma mass spectrograph sample
Sample tray in product pond, belongs to laser ablation plasma mass spectrograph field.
Background technology
It is high that laser ablation has precision, the feature that sample loss is little, and present stage is widely used in the neck such as geochemistry, material
In domain analysis.And in actual application, owing to sample specification is different, size difference is relatively big, how in relatively large sample pond
Fixing relatively small sample also obtains Accurate Analysis and becomes researcher problem demanding prompt solution, and uses different fixed forms pair
The impact of experimental precision and accuracy also can not be ignored.
Laser ablation plasma mass spectrograph is the analyte aerosol produced by laser ablation, by gas carrier by gas
Colloidal sol is delivered in plasma mass spectrometry carry out constituent content or ratio Analysis；After stopping laser ablation, utilize same carrier gases
Sample cell is carried out by body, pollutes for eliminating sample room, is provided with the scavenging period of 30-60 second between adjacent analysis point.Large-scale
The cell volume that general laser degrades plasma mass spectrograph is relatively large, when testing sample size is less, in sample cell
Easily form gas carrier whirlpool, and precipitate aerosol in position, dead angle, pollute the aerosol of next sample, cause measuring accuracy
And accuracy.Longer, the gas carrier large usage quantity of gas carrier clearance time etc. that precipitation aerosol causes all causes necessarily
The wasting of resources.It addition, there is bigger difference, laser ablation in the sample preparation thickness of different experiments personnel and laboratory standard specimen thickness
System has higher spatial resolution, and different height affects precision and the accuracy analyzing test equally.
Chinese patent literature CN204536206U discloses " a kind of rotating channel formula laser ablation pond ", and the document is by right
The improvement that laser ablation pond overall structure is carried out, thus reduce the actual analysis volume of sample surfaces, reach the effect accurately measured
Really.But whole pond of degrading is improved by this design, is not suitable for universal equipment, pond is degraded in replacing simultaneously needs instrument
Part is disassembled, and improves experiment difficulty.
Therefore, problems of the prior art are, how under not introducing the pollution premise that row is new, 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 invention provides one for universal laser ablation plasma mass spectrograph sample cell
In sample tray, by the sample tray support fixation to sample, be to analyze sample and standard sample to be in identical
In plane, lowering apparatus vertical space error；Meanwhile, this pallet can effectively reduce cell volume, steady air flow direction, from
And reach the effect of detection accurate, accurate；Reduce the whirlpool owing to cell volume is excessive, produced by gas carrier；Reduce cleaning
Time, improving detection precision, sample tray is particularly suited for the detection analysis of small samples.
Realizing the technical scheme that above-mentioned purpose of the present invention taked is:
A kind of sample tray in universal laser ablation plasma mass spectrograph sample cell, torr is coiled into the shape of a disc, pallet
Defining end face and bottom surface, end face is provided with sample target, and sample rake caves inward into circular hole from end face but is not passed through bottom surface, described
Sample rake is provided with that arc is convex to be prolonged, and described arc is convex, and to prolong upper surface concordant with pallet top surface, and convex the prolonging of arc is symmetrically arranged with two,
Two described arcs are convex prolong between form two bayonet sockets.
Described sample target is symmetrically arranged with two.
It is provided with groove, the end face of the through pallet of groove and bottom surface on described tray side periphery.
Described pallet is diameter 54 mm disk, high 8 mm of disk.
Described sample target is diameter 25.4 mm.
Described arc is convex prolongs wide 2 mm, thick 0.5 mm.
Being provided with spring in described circular hole, spring one end is fixed on bottom specimen holder, and the other end is supported bottom sample target, sample
Placing testing sample on Zuo, specimen holder is fixed on sample target by convex the prolonging of arc.
Described pallet is formed in one.
Described pallet material is plastics or metal alloy.
Compared with prior art, the invention have the advantages that 1, the present invention is applicable to universal laser ablation plasma
Body constitution spectrometer；2, the whirlpool that in sample cell, gas carrier produces is effectively reduced；3, clearance time is shortened；4, it is effectively improved sample
Detection degree of accuracy and accuracy；5, present configuration is simple, low cost of manufacture, the suitability are strong, has higher economic worth.
Accompanying drawing explanation
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 socket.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments the present invention done detailed specific description, but protection scope of the present invention
It is not limited to following example.
The sample tray being used for as provided by the present invention in universal laser ablation plasma mass spectrograph sample cell
Shown in top view 1, sectional view 2, pallet 1 becomes discoid, and pallet defines end face and bottom surface, and end face is provided with sample target 2, sample
Rake 2 caves inward into circular hole 5 from end face but is not passed through bottom surface, is used for placing sample, and sample rake 2 is provided with that arc is convex prolongs 3, arc
Convex 3 upper surfaces and pallet 1 either flush of prolonging, arc is convex to be prolonged 3 and is symmetrically arranged with two, and two convex prolonging of arc form two between 3
Bayonet socket 6, arc is convex to be prolonged 3 for fixing specimen holder, and sample is placed on specimen holder, and specimen holder rotates to arc by after bayonet socket 6
Convex prolong bottom 3, thus, the convex 3 stop specimen holders that prolong of arc move outward, play the fixing effect supporting sample, bottom specimen holder
Being additionally provided with spring, spring one end is fixedly connected on bottom specimen holder, and the other end is supported bottom sample target 2, and specimen holder is at bullet
It is fixed under spring active force that two arcs at sample target top are convex to be prolonged on 3.It is further opened with recessed on the disk sidepiece periphery of pallet 1
Groove 4, groove 4 is through to bottom surface from pallet top surface, to adapt to sample cell internal structure, makes pallet 1 be arranged in sample cell.
Pallet 1 is diameter 54 mm disk, high 8 mm of disk；Sample target 2 is symmetrically arranged with 2, and the circular hole 5 of sample target 2 is
Diameter 25.4 mm hole, so that specimen holder can be placed and secured on sample target；Convex 3 wide 2 mm that prolong of two arcs on sample target 2 are thick
0.5 mm, with pallet 1 either flush.Pallet 1 is formed in one structure；Pallet 1 material can be selected for plastics or metal alloy.
During work, pallet 1 is positioned in the sample cell of laser ablation plasma mass spectrograph, by pallet 1 position
Suitably adjust to obtain and coordinate with sample cell inner structure after, fixed tray 1；It is placed with bottom the specimen holder of sample and is provided with bullet
Spring structure, specimen holder is placed on sample target 2 by bayonet socket 6, in specimen holder is fixed on after rotating that arc is convex and prolongs 3, spring
One end is fixed on specimen holder, and the other end is supported bottom sample target 2 so that sample is fixed on sample target 2, then starts instrument
Device, carries out detection and analyzes sample.
The present invention, by arranging pallet 1, reduces the cell volume of large-scale general laser ablation plasma mass spectrograph,
Thus reach the effect of Accurate Analysis sample；Meanwhile, the volume reducing sample cell makes the carrier gas scale of construction being passed through significantly reduce, fall
Scavenging period between low adjacent analysis point, while reducing gas carrier loss, substantially increases the accurate of sample detection
Degree；Product is cheap, highly versatile；Solve scientific research personnel by the support holder structure of the present invention to meet in actual tests operates
To general large-scale mass spectrograph can not adapt to the detection needs of different size sample very well.
The content mentioned in above-described embodiment is the present invention preferably embodiment, and not limitation of the invention, not
On the premise of departing from inventive concept of the present invention, within any obvious replacement is protection scope of the present invention.
Claims (9)
1. the sample tray in universal laser ablation plasma mass spectrograph sample cell, torr is coiled into the shape of a disc, its
Being characterised by: pallet defines end face and bottom surface, end face is provided with sample target, sample rake cave inward into circular hole from end face but not
Through bottom surface, described sample rake is provided with that arc is convex to be prolonged, and described arc is convex, and to prolong upper surface concordant with pallet top surface, arc is convex prolong right
Claim to be provided with two, two described arcs are convex prolong between form two bayonet sockets.
Sample tray the most according to claim 1, described sample target is symmetrically arranged with two.
Sample tray the most according to claim 1, described tray side periphery is provided with groove, the through pallet of groove
End face and bottom surface.
Sample tray the most according to claim 1, described pallet is diameter 54 mm disk, high 8 mm of disk.
Sample tray the most according to claim 1, described sample target is diameter 25.4 mm circular hole.
Sample tray the most according to claim 1, described arc is convex prolongs wide 2 mm, thick 0.5 mm.
Sample tray the most according to claim 1, is provided with spring in described circular hole, spring one end is fixed at the bottom of specimen holder
Portion, the other end is supported bottom sample target, and specimen holder is placed testing sample, and specimen holder is fixed on sample target by convex the prolonging of arc
On.
Sample tray the most according to claim 1, described pallet is formed in one.
Sample tray the most according to claim 1, described 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 true CN106198709A (en) | 2016-12-07 |
| CN106198709B CN106198709B (en) | 2019-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179411A (en) * | 2017-07-05 | 2017-09-19 | 北京毅新博创生物科技有限公司 | Multi-functional mass spectrum substrate target holder |
| CN111180306A (en) * | 2020-02-15 | 2020-05-19 | 中国科学院地球化学研究所 | Sample ablation pool for laser ablation inductively coupled plasma mass spectrometer |
| WO2021128972A1 (en) * | 2019-12-26 | 2021-07-01 | 中国科学院地质与地球物理研究所 | Target holder assembly of ion probe, and sample target preparation method |
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| 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 |
| CN102184832A (en) * | 2011-01-11 | 2011-09-14 | 西北大学 | Sample inlet device of laser ablation plasma mass spectrum |
| CN103890559A (en) * | 2011-10-28 | 2014-06-25 | Fei公司 | 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 |
| CN104075932A (en) * | 2014-06-19 | 2014-10-01 | 袁洪林 | Multi-target laser ablation sample chamber |
| 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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2016
- 2016-08-30 CN CN201610761548.7A patent/CN106198709B/en active Active
Patent Citations (6)
| 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 |
| CN102184832A (en) * | 2011-01-11 | 2011-09-14 | 西北大学 | Sample inlet device of laser ablation plasma mass spectrum |
| CN103890559A (en) * | 2011-10-28 | 2014-06-25 | Fei公司 | 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 |
| CN104075932A (en) * | 2014-06-19 | 2014-10-01 | 袁洪林 | Multi-target laser ablation sample chamber |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179411A (en) * | 2017-07-05 | 2017-09-19 | 北京毅新博创生物科技有限公司 | Multi-functional mass spectrum substrate target holder |
| 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 |
| WO2021128972A1 (en) * | 2019-12-26 | 2021-07-01 | 中国科学院地质与地球物理研究所 | Target holder assembly of ion probe, and sample target preparation method |
| CN111180306A (en) * | 2020-02-15 | 2020-05-19 | 中国科学院地球化学研究所 | Sample ablation pool for laser ablation inductively coupled plasma mass spectrometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106198709B (en) | 2019-06-18 |
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