CN107860816A - The extraction of trace uranium element and separation method in a kind of fluid sample - Google Patents
The extraction of trace uranium element and separation method in a kind of fluid sample Download PDFInfo
- Publication number
- CN107860816A CN107860816A CN201711057453.8A CN201711057453A CN107860816A CN 107860816 A CN107860816 A CN 107860816A CN 201711057453 A CN201711057453 A CN 201711057453A CN 107860816 A CN107860816 A CN 107860816A
- Authority
- CN
- China
- Prior art keywords
- aqueous solution
- fluid sample
- concentration
- extraction
- uranium element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a kind of extraction of trace uranium element in fluid sample and separation method, belongs to trace analysis Sample Pretreatment Technique Used field.The method of the invention is mainly used as extractant by the use of two kinds of organic phosphine mixtures of pentyl pentyl phosphate and trioctylphosphine oxide (TOPO), and the concentration of strict Non-leaching salpeter solution, make uranium element that there is higher distribution coefficient and stronger adsorption capacity, so as to reach preferable extract and separate effect；And the sal volatile of certain concentration is used to make uranium element that there is the higher rate of recovery as eluant, eluent.Extraction of the present invention and separation method can simply and quickly realize the concentration to trace uranium element in fluid sample, while realize the separation to some interference heavy metal ion, improve the stability and reliability of determination of trace uranium element determination result in fluid sample.
Description
Technical field
The present invention relates to a kind of extraction separating method, in more particularly to a kind of fluid sample the extraction of trace uranium element and point
From method, belong to trace analysis Sample Pretreatment Technique Used field.
Background technology
Extraction is the effective ways of SEPARATION OF URANIUM and impurity in the weak solution that uranium concentration is low, impurity content is high.In uranium
In extraction process, conventional extractant includes：Organic phosphine and alkyl amine extractant, such as tributyl phosphate (TBP), two (2- second
Base hexyl) phosphoric acid and trioctylamine etc..Alkyl amine extractant is limited in one's ability to uranium extraction, using it is more be that organic phosphine extracts
Agent；At present, in uranium element trace analysis field, most widely used is TBP extractants, but some technologies also be present and limit to.Such as：
TBP can produce chemical degradation in use, these catabolites meeting adsorbing contaminant ion, reduce decontamination factor, Jin Erying
The efficiency of extraction is rung, the rate of recovery for ultimately resulting in target uranium element is relatively low；In addition, in trace analysis, possible impact analysis side
The sensitivity of method.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide trace uranium element in a kind of fluid sample
Extraction and separation method, extraction is used as by the use of two kinds of organic phosphine mixtures of pentyl pentyl phosphate and trioctylphosphine oxide (TOPO) (TOPO)
Agent, and strict Non-leaching HNO3The concentration of solution, make uranium element that there is higher distribution coefficient and stronger adsorption capacity, from
And reach preferable extract and separate effect；And using certain concentration sal volatile be used as eluant, eluent, make uranium element with compared with
The high rate of recovery.
The mesh of the present invention is achieved through the following technical solutions：
The extraction of trace uranium element and separation method in a kind of fluid sample, methods described comprise the following steps that：
(1) hexane solution of pentyl pentyl phosphate and trioctylphosphine oxide (TOPO) is added in polytetrafluoroethylene powder, then
Stirring is complete to n-hexane volatilization, in fluffy, then uses HNO3After the aqueous solution I is adjusted to pulpous state, the two of wet method dress post and chromatograph post
End is filled with polytetrafluoroethylene (PTFE) silk, then uses HNO3The aqueous solution II elutes the chromatograph post being equipped with, and balances chromatograph post；
(2) by fluid sample upper prop, and chromatograph post is eluted with aqueous solution of nitric acid III, then with purity not less than deionized water
Water washs chromatograph post to neutrality, finally uses (NH4)2CO3The aqueous solution elutes chromatograph post, and collects eluent, that is, completes to liquid
The separation of trace uranium element in sample.
In hexane solution containing pentyl pentyl phosphate and trioctylphosphine oxide (TOPO), the concentration of pentyl pentyl phosphate is preferred
0.1mol/L~0.2mol/L, the preferred 0.1mol/L~0.2mol/L of concentration of trioctylphosphine oxide (TOPO)；Pentyl pentyl phosphate and three
The mol ratio of octylphosphine oxide is 1:1；1mL is added in every gram of polytetrafluoroethylene powder and contains pentyl pentyl phosphate and trioctylphosphine oxide (TOPO)
Hexane solution.
HNO3The concentration of the aqueous solution I is 0.1mol/L~0.3mol/L, and 0.5mL HNO are added in every gram of polytetrafluoroethylene powder3
The aqueous solution I.
HNO3The concentration of the aqueous solution II is 1.5mol/L~2.5mol/L, the preferred 1mL/min~2mL/min of flow velocity；HNO3Water
The volume of solution II and the volume ratio preferably 3~5 of chromatograph post:1.
To ensure effect of extracting, the flow velocity of fluid sample upper prop is less than 2.5mL/min.
The concentration of aqueous solution of nitric acid III is 2mol/L~5mol/L, the preferred 1.5mL/min~2.5mL/min of flow velocity；Nitric acid
The volume of the aqueous solution III and the volume ratio preferably 3~6 of chromatograph post:1.
(NH4)2CO3The concentration of the aqueous solution is 0.05mol/L~0.4mol/L, the preferred 1mL/min~2mL/min of flow velocity；
(NH4)2CO3The volume of the aqueous solution and the volume ratio preferably 3~6 of chromatograph post:1.
Beneficial effect：
Compared with individually using the extracting chromatographic column of TBP or pentyl pentyl phosphate as extraction packing material, the present invention
It is middle to be used as extraction packing material using two kinds of organic phosphine mixtures of pentyl pentyl phosphate and TOPO, and optimize amyl group di(2-ethylhexyl)phosphate
The proportioning of pentyl ester and TOPO, effect of extracting is more preferable, and dirt-removing power is strong.Phosphono oxygen atom group can produce by force with actinide metal ion
Coordination, therefore in neutral organophosphorus compound, the organic phosphine compound extracting power of R3PO (R is alkyl) structure is most strong,
Such as TOPO；In addition, phosphoric ester compound, in extraction process, can remove some impurity metal ions very well, avoid list
The shortcomings that solely using TOPO, ensure extraction efficiency.HNO is eluted by Optimized Extraction post3The concentration of solution, eluent (NH4)2CO3
The crucial extracting operation parameter such as the concentration of the aqueous solution, make uranium element that there is the higher rate of recovery, so as to reach preferably extraction point
From effect.
Extraction of the present invention and separation method can be realized simply and quickly to nanogram magnitude uranium element in fluid sample
Concentration, while realize the separation to some interference heavy metal ion, improve determination of trace uranium element determination result in fluid sample
Stability and reliability.
Embodiment
With reference to embodiment, the present invention will be further described.
In following examples：
Polytetrafluoroethylene powder：The mesh of 30 mesh~60, Chinese medicines group chemical reagents corporation；
Icp mses (ICP-MS)：Model Mars-9000, the limited public affairs of optically focused science and technology (Hangzhou) share
Department；Tested using common sensitivity mode238U isotopes.
Embodiment 1
(1) pentyl pentyl phosphate and trioctylphosphine oxide (TOPO) are dissolved in n-hexane, are configured to pentyl pentyl phosphate concentration
The hexane solution for being 0.15mol/L for 0.15mol/L and TOPO concentration；
(2) under agitation, the hexane solution prepared in 30mL steps (1) is added to 30g polytetrafluoroethylene powders dropwise
In, it is subsequently placed in fume hood and stirs 1h, n-hexane volatilization is complete, in fluffy；It is again 0.2mol/L's with 15mL concentration
HNO3After the aqueous solution I is adjusted to pulpous state, the both ends of wet method dress post and chromatograph post are filled with polytetrafluoroethylene (PTFE) silk, are with 20mL concentration
2.0mol/L aqueous solution of nitric acid II balances chromatograph post, and it is 2.0mL/min to control the flow velocity of aqueous solution of nitric acid II；
Wherein, the material of chromatograph post used is glass, internal diameter 10mm, height of bed 80mm, and the both ends of chromatograph post are with poly- four
PVF silk is filled；
(3) 5ng uranium standard samples are added in the aqueous solution of nitric acid that 200mL concentration is 2.0mol/L, are configured to liquid
Sample；
(4) the fluid sample upper prop for step (3) being prepared with 2.0mL/min flow velocity, washs the beaker of holding liquid sample
And by cleaning solution in the lump upper prop；Then, the aqueous solution of nitric acid III for being 3.0mol/L with 20mL concentration elutes chromatograph post, and controls nitre
The flow velocity of aqueous acid III is 2.0mL/min；Chromatograph post is washed to neutrality with deionized water again, is with 20mL concentration finally
0.1mol/L (NH4)2CO3The aqueous solution elutes chromatograph post, and controls (NH4)2CO3The flow velocity of the aqueous solution is 1.0mL/min, is collected
Eluent, that is, complete the concentrating and separating to trace uranium element in fluid sample.
The eluent of collection is analyzed using ICP-MS,238U detected level is 4.63ng, and sample recovery rate is
92.6%.
Embodiment 2
(1) pentyl pentyl phosphate and trioctylphosphine oxide (TOPO) are dissolved in n-hexane, are configured to pentyl pentyl phosphate concentration
The hexane solution for being 0.15mol/L for 0.15mol/L and TOPO concentration；
(2) under agitation, the hexane solution prepared in 30mL steps (1) is added to 30g polytetrafluoroethylene powders dropwise
In, it is subsequently placed in fume hood and stirs 1h, n-hexane volatilization is complete, in fluffy；It is again 0.2mol/L's with 15mL concentration
HNO3After the aqueous solution I is adjusted to pulpous state, the both ends of wet method dress post and chromatograph post are filled with polytetrafluoroethylene (PTFE) silk, are with 20mL concentration
2.0mol/L aqueous solution of nitric acid II balances chromatograph post, and it is 2.0mL/min to control the flow velocity of aqueous solution of nitric acid II；
Wherein, the material of chromatograph post used is glass, internal diameter 10mm, height of bed 80mm, and the both ends of chromatograph post are with poly- four
PVF silk is filled；
(3) 5ng uranium standard samples are added in the aqueous solution of nitric acid that 200mL concentration is 2.0mol/L, are configured to liquid
Sample；
(4) the fluid sample upper prop for step (3) being prepared with 2.0mL/min flow velocity, washs the beaker of holding liquid sample
And by cleaning solution in the lump upper prop；Then, the aqueous solution of nitric acid III for being 4.0mol/L with 20mL concentration elutes chromatograph post, and controls nitre
The flow velocity of aqueous acid III is 2.0mL/min；Chromatograph post is washed to neutrality with deionized water again, is with 20mL concentration finally
0.2mol/L (NH4)2CO3The aqueous solution elutes chromatograph post, and controls (NH4)2CO3The flow velocity of the aqueous solution is 1.0mL/min, is collected
Eluent, that is, complete the concentrating and separating to trace uranium element in fluid sample.
The eluent of collection is analyzed using ICP-MS,238U detected level is 4.78ng, and sample recovery rate is
95.6%.
Embodiment 3
(1) pentyl pentyl phosphate and trioctylphosphine oxide (TOPO) are dissolved in n-hexane, are configured to pentyl pentyl phosphate concentration
The hexane solution for being 0.15mol/L for 0.15mol/L and TOPO concentration；
(2) under agitation, the hexane solution prepared in 30mL steps (1) is added to 30g polytetrafluoroethylene powders dropwise
In, it is subsequently placed in fume hood and stirs 1h, n-hexane volatilization is complete, in fluffy；It is again 0.2mol/L's with 15mL concentration
HNO3After the aqueous solution I is adjusted to pulpous state, the both ends of wet method dress post and chromatograph post are filled with polytetrafluoroethylene (PTFE) silk, are with 20mL concentration
2.0mol/L aqueous solution of nitric acid II balances chromatograph post, and it is 2.0mL/min to control the flow velocity of aqueous solution of nitric acid II；
Wherein, the material of chromatograph post used is glass, internal diameter 10mm, height of bed 80mm, and the both ends of chromatograph post are with poly- four
PVF silk is filled；
(3) 5ng uranium standard samples are added in the aqueous solution of nitric acid that 200mL concentration is 2.0mol/L, are configured to liquid
Sample；
(4) the fluid sample upper prop for step (3) being prepared with 2.0mL/min flow velocity, washs the beaker of holding liquid sample
And by cleaning solution in the lump upper prop；Then, the aqueous solution of nitric acid III for being 5.0mol/L with 20mL concentration elutes chromatograph post, and controls nitre
The flow velocity of aqueous acid III is 2.0mL/min；Chromatograph post is washed to neutrality with deionized water again, is with 20mL concentration finally
0.3mol/L (NH4)2CO3The aqueous solution elutes chromatograph post, and controls (NH4)2CO3The flow velocity of the aqueous solution is 1.0mL/min, is collected
Eluent, that is, complete the concentrating and separating to trace uranium element in fluid sample.
The eluent of collection is analyzed using ICP-MS,238U detected level is 4.51ng, and sample recovery rate is
90.2%.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (7)
1. the extraction of trace uranium element and separation method in a kind of fluid sample, it is characterised in that：The specific steps of methods described
It is as follows：
(1) hexane solution of pentyl pentyl phosphate and trioctylphosphine oxide (TOPO) is added in polytetrafluoroethylene powder, then stirred
It is complete to n-hexane volatilization, then use HNO3After the aqueous solution I is adjusted to pulpous state, the both ends polytetrafluoroethylene (PTFE) of wet method dress post and chromatograph post
Silk filling, then use HNO3The aqueous solution II elutes the chromatograph post being equipped with；
(2) by fluid sample upper prop, and chromatograph post is eluted with aqueous solution of nitric acid III, then will not less than the water of deionized water with purity
Chromatograph post is washed to neutrality, finally uses (NH4)2CO3The aqueous solution elutes chromatograph post, and collects eluent, that is, completes to fluid sample
The separation of middle trace uranium element；
Wherein, pentyl pentyl phosphate and the mol ratio of trioctylphosphine oxide (TOPO) are 1:1；HNO3The concentration of the aqueous solution I be 0.1mol/L~
0.3mol/L, HNO3The concentration of the aqueous solution II is 1.5mol/L~2.5mol/L, the concentration of aqueous solution of nitric acid III for 2mol/L~
5mol/L；(NH4)2CO3The concentration of the aqueous solution is 0.05mol/L~0.4mol/L.
2. the extraction of trace uranium element and separation method in a kind of fluid sample according to claim 1, it is characterised in that：
In hexane solution containing pentyl pentyl phosphate and trioctylphosphine oxide (TOPO), the concentration of pentyl pentyl phosphate for 0.1mol/L~
0.2mol/L, the concentration of trioctylphosphine oxide (TOPO) is 0.1mol/L~0.2mol/L；1mL is added in every gram of polytetrafluoroethylene powder and contains penta
The hexane solution of base phosphoric acid diamyl ester and trioctylphosphine oxide (TOPO).
3. the extraction of trace uranium element and separation method in a kind of fluid sample according to claim 1, it is characterised in that：
0.5mL HNO are added in every gram of polytetrafluoroethylene powder3The aqueous solution I.
4. the extraction of trace uranium element and separation method in a kind of fluid sample according to claim 1, it is characterised in that：
HNO3The flow velocity of the aqueous solution II is 1mL/min~2mL/min；HNO3The volume of the aqueous solution II is 3~5 with the volume ratio of chromatograph post:
1。
5. the extraction of trace uranium element and separation method in a kind of fluid sample according to claim 1, it is characterised in that：
The flow velocity of fluid sample upper prop is less than 2.5mL/min.
6. the extraction of trace uranium element and separation method in a kind of fluid sample according to claim 1, it is characterised in that：
The flow velocity of aqueous solution of nitric acid III is 1.5mL/min~2.5mL/min, and the volume and the volume ratio of chromatograph post of aqueous solution of nitric acid III are
3~6:1.
7. the extraction of trace uranium element and separation method in a kind of fluid sample according to claim 1, it is characterised in that：
(NH4)2CO3The flow velocity of the aqueous solution is 1mL/min~2mL/min, (NH4)2CO3The volume of the aqueous solution and the volume ratio of chromatograph post are
3~6:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711057453.8A CN107860816B (en) | 2017-11-01 | 2017-11-01 | Extraction and separation method of trace uranium element in liquid sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711057453.8A CN107860816B (en) | 2017-11-01 | 2017-11-01 | Extraction and separation method of trace uranium element in liquid sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107860816A true CN107860816A (en) | 2018-03-30 |
| CN107860816B CN107860816B (en) | 2021-04-23 |
Family
ID=61697593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711057453.8A Active CN107860816B (en) | 2017-11-01 | 2017-11-01 | Extraction and separation method of trace uranium element in liquid sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107860816B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261210A (en) * | 2019-07-31 | 2019-09-20 | 核工业二三O研究所 | The alpha energy spectrum method of testing of the method for separating and concentrating of uranium and uranium in sample of sandstone |
| CN112147081A (en) * | 2019-06-28 | 2020-12-29 | 中核陕西铀浓缩有限公司 | Method for determining B, Si in uranium hexafluoride product |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106507822B (en) * | 2007-11-30 | 2011-02-16 | 核工业北京化工冶金研究院 | The method for reclaiming uranium from the alkalescent leachate of high chloride ion high salinity |
| CN103866122A (en) * | 2014-01-06 | 2014-06-18 | 东华理工大学 | Method for microbiological leaching of uranium-molybdenum ore and enrichment and separation of uranium and molybdenum |
-
2017
- 2017-11-01 CN CN201711057453.8A patent/CN107860816B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106507822B (en) * | 2007-11-30 | 2011-02-16 | 核工业北京化工冶金研究院 | The method for reclaiming uranium from the alkalescent leachate of high chloride ion high salinity |
| CN103866122A (en) * | 2014-01-06 | 2014-06-18 | 东华理工大学 | Method for microbiological leaching of uranium-molybdenum ore and enrichment and separation of uranium and molybdenum |
Non-Patent Citations (3)
| Title |
|---|
| DENIS BEKTRAMI ET AL.: "Modeling of the extraction of uranium(Ⅵ) from concentrated phosphoric acid by synergistic mixtures of bis-(2-ethylhexyl)-phosphoric acid and tri-n-octrlphosphine oxide", 《HYDROMETALLURGY》 * |
| 伊小伟等: "UTEVA萃取色层分离超铀元素的性能研究", 《核化学与放射化学》 * |
| 吉艳琴等: "TOPO萃取色层分离-ICP-MS法测定土壤中痕量铀的同位素丰度比", 《核化学与放射化学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147081A (en) * | 2019-06-28 | 2020-12-29 | 中核陕西铀浓缩有限公司 | Method for determining B, Si in uranium hexafluoride product |
| CN112147081B (en) * | 2019-06-28 | 2024-03-19 | 中核陕西铀浓缩有限公司 | Method for measuring B, si in uranium hexafluoride product |
| CN110261210A (en) * | 2019-07-31 | 2019-09-20 | 核工业二三O研究所 | The alpha energy spectrum method of testing of the method for separating and concentrating of uranium and uranium in sample of sandstone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107860816B (en) | 2021-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7553461B2 (en) | Multivalent metal ion extraction using diglycolamide-coated particles | |
| CN103529148B (en) | Method for detecting residual quantity of glyphosate and aminomethyl phosphonic acid metabolite of glyphosate in food | |
| CN106048266B (en) | A kind of method for separating and concentrating to trace uranium in a large amount of thoriums | |
| CN103014380B (en) | Method for separating neptunium from uranium product by TEVA-UTEVA extraction chromatographic column | |
| Toews et al. | Complexation and transport of uranyl nitrate in supercritical carbon dioxide with organophosphorus reagents | |
| CN103901129A (en) | Method for detecting ten types of organophosphorus pesticides by using magnetic separation-gas chromatography | |
| CN107860816A (en) | The extraction of trace uranium element and separation method in a kind of fluid sample | |
| CN102021335A (en) | Method for separating zirconium from hafnium by using elution extraction method | |
| De Regge et al. | Review of chemical separation techniques applicable to alpha spectrometric measurements | |
| CN103045869B (en) | Method for enriching uranium and thorium from water phase by using cloud point extraction technology | |
| Dulanská et al. | The selective separation of Pu isotopes using molecular recognition technology product AnaLig® Pu02 gel and extraction chromatography TRU® resin | |
| CN101483079A (en) | Method for MA/RE mutual separation in high-level waste | |
| Xiao-Quan et al. | Matrix modification for determination of selenium in geological samples by graphite-furnace atomic-absorption spectrometry after preseparation with thiol cotton fibre | |
| Yang et al. | Solvent extraction of gold (I) from alkaline cyanide solutions by the cetylpyridinium bromide/tributylphosphate system | |
| Modolo et al. | Recovery of actinides and lanthanides from high-level liquid waste by extraction chromatography using TODGA+ TBP impregnated resins | |
| Deorkar et al. | Liquid-liquid extraction of zirconium from hafnium and other elements with dicyclohexyl-18-crown-6 | |
| JP3889322B2 (en) | Separation of americium and curium from heavy rare earth elements | |
| CN101502790A (en) | Sorbent for mutual separation of MA/RE in high-level waste and preparation thereof | |
| Liu et al. | Effective separation of neodymium and lanthanum by single-module hollow fiber supported liquid membrane with P507 as extractant | |
| CN111621652B (en) | Separation method for separating neptunium from sample to be detected | |
| CN107675002A (en) | A kind of method for reclaiming scandium from sulfuric acid solution based on trialkyl phosphine solid absorbent | |
| Deepika et al. | Separation of lanthanides and actinides on a bistriazinyl pyridine coated reverse phase column | |
| CN103357389B (en) | BPHA levextrel resin and method for separating and enriching molybdenum in environmental and geological samples by using same | |
| Ayranov et al. | Determination of neptunium in soil by ICP-MS | |
| CN109187155B (en) | Method for extracting and purifying effective boron in water sample and method for testing boron isotope composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |