CN201529491U - La-142 fast separation system - Google Patents
La-142 fast separation system Download PDFInfo
- Publication number
- CN201529491U CN201529491U CN2009201455850U CN200920145585U CN201529491U CN 201529491 U CN201529491 U CN 201529491U CN 2009201455850 U CN2009201455850 U CN 2009201455850U CN 200920145585 U CN200920145585 U CN 200920145585U CN 201529491 U CN201529491 U CN 201529491U
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- Prior art keywords
- hdehp
- chromatographic column
- precipitate
- extracting chromatographic
- separation system
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- 238000000926 separation method Methods 0.000 title claims abstract description 29
- SEGLCEQVOFDUPX-UHFFFAOYSA-N di-(2-ethylhexyl)phosphoric acid Chemical compound CCCCC(CC)COP(O)(=O)OCC(CC)CCCC SEGLCEQVOFDUPX-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000004992 fission Effects 0.000 claims abstract description 14
- 239000002244 precipitate Substances 0.000 claims description 16
- 239000000047 product Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000005406 washing Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- 239000000523 sample Substances 0.000 description 11
- 241000283973 Oryctolagus cuniculus Species 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000006166 lysate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 101100208721 Mus musculus Usp5 gene Proteins 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 230000000155 isotopic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910002007 uranyl nitrate Inorganic materials 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
The utility model belongs to separation systems of short-lived fission products and discloses a La-142 fast separation system. A sample separation and collection device of the system comprises a double-needle sampler, a washing liquid storage tank, a precipitation and separation unit, an electromagnetic valve, HDEHP extraction chromatographic columns, an oilless vacuum pump, a collection bottle and other parts, wherein the double-needle sampler is connected with the precipitation and separation unit through the electromagnetic valve, the upper end of the precipitation and separation unit is connected with the liquid storage tank, the lower end is connected with the two HDEHP extraction chromatographic columns which are connected with each other in series, the upper end of the second extraction chromatographic column is connected with the liquid storage tank, and the lower end is connected with the collection bottle. The system has the advantages of simple structure, low cost and practicality.
Description
Technical field
The utility model belongs to the short-lived fission product piece-rate system, specifically discloses a kind of La-142 Quick Separation System.
Background technology
The high accuracy decay DATA REASONING of short-lived fission product La-142 (half-life is 91.2 minutes) need prepare a certain amount of high abundance La-142 solution example.Document Tong SL, Prestwich WV, Fritze K.Decay of
142La[J] .Can J Phys, 1971,49:1179～1185 behind short time irradiation, are carried out BaCl with uranyl nitrate solution
2Precipitation is cooled off a period of time again with BaCl
2La (OH) is carried out in the precipitation dissolving
3Precipitation.This flow process can't be eliminated
143The interference of La removes in the spectrogram that obtains and contains
141La,
141Outside the Ce, also has a great deal of
143Ce.Gehrke RJ. γ-ray Emission Probabilities for the Decays of
141La and
142La[J] .Int.J.App.Rad.and Isot, 1981, in 32:377～379 with rare earth with Y (OH)
3The form precipitation is carried out Rare Earth Separation with high performance liquid chromatography (HPLC) behind the nitric acid dissolve, and this flow process is quite time-consuming.
In addition, fission product is a very complicated system, includes more than 30 kind of element, kind of radionuclide surplus in the of 500.General chemical method can only separating element, is difficult to separated isotopes.Simultaneously, because the existence of independent yield, fission product nucleic majority is by its precursor nuclide decay, along with the continuous decay and the formation of nucleic, makes that very big variation is taking place the content of each nucleic in time in the system.Therefore can select suitable irradiation, cooling, separation, the measurement moment and time, disturbing isotopic content to reduce even eliminating, so that obtain the high as far as possible required isotope of purity.
Preparation
142The La sample must separate from fission product.The La isotope that exists in fission product is listed in table 1.
The radio isotope of La in table 1 fission product
As can be seen from the above table,
141La,
143La with
142The half-life of La is approaching, directly separates from fission product
142Must there be their interference during La.Simultaneously as can be seen from Figure 1, T
1/2(
141Ba)＞T
1/2(
142Ba)＞T
1/2(
143But T Ba),
1/2(
141Cs)＞＞T
1/2(
142Cs) ≈ T
1/2(
143Cs).Therefore, adopt " short divide " to realize the Cs-Ba branch according to fast, with Cs-141 remove from; Realize that then Ba-La separates for the first time, removes La-143; Treat to carry out after La-142 grows out the Ba-La separation second time at last and obtain La-142 from Ba-142.Claim that this is three step separations.
Chinese patent 200520132985.X discloses a kind of Y-95 Quick Separation System, but this piece-rate system is not suitable for the separation of La-142.Therefore, do not see the system that La-142 separates fast that is specifically designed in the document.
Summary of the invention
(1) goal of the invention
The purpose of this utility model provides a kind of piece-rate system of La-142 rapidly and efficiently simple in structure, with low cost and practical.
(2) technical scheme
For achieving the above object, the utility model provides following technical scheme.
A kind of La-142 Quick Separation System, comprise fission product the transmission of generation, sample, sampling, separate and device such as collection.Fission product mainly produces at thermal neutron nuclear reactor irradiation U-235, the defeated pneumatic rabbit transmission system that adopts in the thermal neutron nuclear reactor of sample oral instructions.Sample enters separation and gathering-device by the pneumatic rabbit transmission system behind short time irradiation.Key is that described sample separation and gathering-device comprise parts such as crosspointer sampler, hopper, precipitate and separate unit, magnetic valve, HDEHP extracting chromatographic column, oilless vacuum pump and receiving flask.Wherein, the crosspointer sampler links by magnetic valve and precipitate and separate unit, upper end, precipitate and separate unit connection hopper, and the HDEHP extracting chromatographic column of connecting with two in the lower end links, second extracting chromatographic column upper end connection hopper, lower end and receiving flask link.
(3) invention effect
La-142 Quick Separation System provided by the utility model is a radioactive liquid outlet and a gas vent only, and the whole completeness and the reliability of system are very high.Cooperate controller to use and to realize remotely-controlled operation.Whole separation process can be finished in 30 minutes, to chemical recovery rate～80% of La, to decontamination factor＞10 of main interference nucleic
3Adopt in the isolated product of pulse thermal neutron nuclear reactor
142La with
141The radioactive activity of La is than＞3.5.
Description of drawings
Figure 1A=141,142,143 part decay chain;
Fig. 2 La-142 Quick Separation System structural representation.
Wherein, 1, crosspointer sampler; 2, magnetic valve; 3, precipitate and separate unit; 4, a HDEHP extracting chromatographic column; 5, the 2nd HDEHP extracting chromatographic column; 6, oilless vacuum pump; 7, receiving flask; 8,9,10,11, hopper.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is further explained.
A kind of La-142 Quick Separation System, comprise fission product the transmission of generation, sample, sampling, separate and device such as collection.
Wherein, as shown in Figure 2, sample separation and gathering-device comprise crosspointer sampler 1, hopper 8,9,10,11, precipitate and separate unit 3, magnetic valve 2, the one HDEHP extracting chromatographic column 4 and the 2nd HDEHP extracting chromatographic column 5, parts such as oilless vacuum pump 6 and receiving flask 7.Wherein, one high and one low two syringe needles are equipped with in crosspointer sampler 1 bottom, and low syringe needle is used for sampling, and high syringe needle is used for equalizing pressure.Crosspointer sampler 1 links by magnetic valve 2 and precipitate and separate unit 3.3 upper ends, precipitate and separate unit are by valve connection hopper 10,11, and the bottom blasts air by valve, and precipitation is played ageing and stirring action.Hopper 10 is placed cleaning solution, and hopper 11 is placed lysate.A HDEHP extracting chromatographic column 4 and the 2nd HDEHP extracting chromatographic column 5 connected with two in 3 lower ends, precipitate and separate unit link.Wherein the upper end of a HDEHP extracting chromatographic column 4 is by valve connection hopper 8,9, and hopper 8 is placed the low concentrated hydrochloric acid of cleaning solution, and hopper 9 is placed the high concentrated hydrochloric acid of cleaning solution.The 2nd HDEHP extracting chromatographic column 5 links with receiving flask 7.In addition, oilless vacuum pump 6 connects receiving flask 7 and the 2nd HDEHP extracting chromatographic column 5 by valve, provides positive negative pressure as power.A precipitate and separate unit 3 and a HDEHP extracting chromatographic column 4 and the 2nd HDEHP extracting chromatographic column 5, and flow direction is controlled by miniature electromagnetic valve between the receiving flask 7.
During use, fission product produces by thermal neutron nuclear reactor irradiation U-235, the defeated pneumatic rabbit transmission system that adopts in the thermal neutron nuclear reactor of sample oral instructions.The material of sample irradiation capsule adopts vinyl tube, is beneficial to sampling.Sample is squeezed into crosspointer sampler 1 by the pneumatic rabbit transmission system behind short time irradiation, radioactive solution flows into precipitate and separate unit 3 through low sampling probe, and the BaCl22H2O precipitation takes place under the concentrated hydrochloric acid condition.BaCl22H2O is deposited in the precipitate and separate unit 3 and is filtered, then remove residual concentrated hydrochloric acid fast with the washing agent in the hopper 10, with the dissolving of the lysate in the liquid hopper 11 BaCl22H2O precipitation, solution enters the transition chamber of the 2nd HDEHP extracting chromatographic column 5 by a HDEHP extracting chromatographic column 4 again.Place after 20 minutes, by the 2nd HDEHP extracting chromatographic column 5,, then use high concentrated hydrochloric acid in the hopper 9 solution La-142 wash-out from the 2nd HDEHP extracting chromatographic column 5 earlier with the low concentrated hydrochloric acid washing in the hopper 8.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (5)
1. La-142 Quick Separation System, comprise the generation of fission product, the sample transmission, sampling, separate and gathering-device, it is characterized in that: described sample separation and gathering-device comprise crosspointer sampler (1), hopper (8,9,10,11), magnetic valve (2), precipitate and separate unit (3), the one HDEHP extracting chromatographic column (4) and the 2nd HDEHP extracting chromatographic column (5), and receiving flask (7) part, crosspointer sampler (1) links by magnetic valve (2) and precipitate and separate unit (3), upper end, precipitate and separate unit (3) connection hopper (10,11), the lower end links with HDEHP extracting chromatographic column (4) of connecting successively and the 2nd HDEHP extracting chromatographic column (5), the 2nd HDEHP extracting chromatographic column (5) upper end connection hopper (8,9), lower end and receiving flask (7) link.
2. La-142 Quick Separation System according to claim 1 is characterized in that: one high and one low two syringe needles are equipped with in described crosspointer sampler (1) bottom, and low syringe needle is used for sampling, and high syringe needle is used for equalizing pressure.
3. La-142 Quick Separation System according to claim 1 is characterized in that: bottom, described precipitate and separate unit (3) blasts air by valve.
4. La-142 Quick Separation System according to claim 1 is characterized in that: described receiving flask (7) is connected by oilless vacuum pump (6) through valve with the 2nd HDEHP extracting chromatographic column (5).
5. La-142 Quick Separation System according to claim 1, it is characterized in that: described precipitate and separate unit (3) and a HDEHP extracting chromatographic column (4) and the 2nd HDEHP extracting chromatographic column (5), and flow direction is controlled by miniature electromagnetic valve between the receiving flask (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201455850U CN201529491U (en) | 2009-03-12 | 2009-03-12 | La-142 fast separation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201455850U CN201529491U (en) | 2009-03-12 | 2009-03-12 | La-142 fast separation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201529491U true CN201529491U (en) | 2010-07-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201455850U Expired - Lifetime CN201529491U (en) | 2009-03-12 | 2009-03-12 | La-142 fast separation system |
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| Country | Link |
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| CN (1) | CN201529491U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236277A (en) * | 2013-04-28 | 2013-08-07 | 清华大学 | Sleeve type helium temperature-control sediment sampling device applied to high-temperature gas cooled reactor |
| CN103614577A (en) * | 2013-11-27 | 2014-03-05 | 西北核技术研究所 | Quick preparation method of <239>Np tracer |
| CN105039749A (en) * | 2015-08-12 | 2015-11-11 | 中国原子能科学研究院 | Method for separating 141 La from fission products |
-
2009
- 2009-03-12 CN CN2009201455850U patent/CN201529491U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236277A (en) * | 2013-04-28 | 2013-08-07 | 清华大学 | Sleeve type helium temperature-control sediment sampling device applied to high-temperature gas cooled reactor |
| CN103236277B (en) * | 2013-04-28 | 2015-10-28 | 清华大学 | Be applied to the sleeve type helium temperature-control sediment sampler of high temperature gas cooled reactor |
| CN103614577A (en) * | 2013-11-27 | 2014-03-05 | 西北核技术研究所 | Quick preparation method of <239>Np tracer |
| CN103614577B (en) * | 2013-11-27 | 2015-07-01 | 西北核技术研究所 | Quick preparation method of <239>Np tracer |
| CN105039749A (en) * | 2015-08-12 | 2015-11-11 | 中国原子能科学研究院 | Method for separating 141 La from fission products |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100721 Effective date of abandoning: 20090312 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20100721 Effective date of abandoning: 20090312 |
|
| RGAV | Abandon patent right to avoid regrant |