Nothing Special   »   [go: up one dir, main page]

CN108152112A - Pu in a kind of low-activity sample,241Am and90The method of Sr separation determinations - Google Patents

Pu in a kind of low-activity sample,241Am and90The method of Sr separation determinations Download PDF

Info

Publication number
CN108152112A
CN108152112A CN201711363870.5A CN201711363870A CN108152112A CN 108152112 A CN108152112 A CN 108152112A CN 201711363870 A CN201711363870 A CN 201711363870A CN 108152112 A CN108152112 A CN 108152112A
Authority
CN
China
Prior art keywords
sample
columns
separation
low
teva
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.)
Pending
Application number
CN201711363870.5A
Other languages
Chinese (zh)
Inventor
靳小军
孔雪艳
韩雪梅
刘燕
夏峰林
乔淑霞
徐丽霞
陈静
陈文若
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
404 Co Ltd China National Nuclear Corp
Original Assignee
404 Co Ltd China National Nuclear Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 404 Co Ltd China National Nuclear Corp filed Critical 404 Co Ltd China National Nuclear Corp
Priority to CN201711363870.5A priority Critical patent/CN108152112A/en
Publication of CN108152112A publication Critical patent/CN108152112A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01N1/40—Concentrating samples
    • G01N1/405—Concentrating samples by adsorption or absorption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
    • G01T1/363—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry with Cerenkov detectors

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

The present invention relates in a kind of low-activity sample238‑240Pu、241Am and90The method of Sr separation determinations, includes the following steps：1) sample pretreatment；2)238‑240Pu、241Am and90After Sr separation and concentrations add in ascorbic acid in the lysate obtained by step 1), the valence state of plutonium is adjusted to tetravalence by sodium nitrite, by TEVA, TRU and SR crosscurrent extraction chromatograph resin column, flow velocity 1mL~1.2mL/min is kept；At this point,238‑240Pu will be attracted on TEVA columns,241Am is attracted on TRU columns,90Sr is attracted on SR columns；With on the hydrochloric acid solution elution TEVA columns of 20mL~25mL 0.02mol/L238‑240Pu, on the hydrochloric acid solution elution TRU columns of 15mL~20mL 3.0mol/L241Am, on 15mL~20mL 0.01mol/L salpeter solutions elution SR columns90Sr；3)238‑240Pu、241Am and90Sr is measured,238‑240Pu、241Am leacheates prepare α sources using cerium fluoride microdeposit method, in being measured on alpha energy spectrum；90Sr leacheates are placed 14d and are treated90Sr‑90Cherenkov's counting method measures after Y balances.Using this analysis method, can complete Pu in sample,241Am and90The separation and concentration of Sr, shortening Pu,241Am and90The analytical cycle of Sr.

Description

Pu in a kind of low-activity sample,241Am and90The method of Sr separation determinations
Technical field
The invention belongs to the elimination of nuclear facilities and disposal of three wastes technical field of research, and in particular in a kind of low-activity sample Pu、241Am and90The method of Sr separation determinations.
Background technology
Analysis sample size is big in the elimination of nuclear facilities and disposal of three wastes project, and analysis project is more, and radioactive level height is not One, analytical cycle is tight, will face the problems such as processing sample size big, analytical cycle is long, personnel's radioactive dose height.
At present Pu,241Am、90Tri- analysis methods of Sr can only be with reference to environment grade sample analysis standard, and three analytical standards are each From independence, sample pretreatment, separation condition etc. are different so that analytical cycle is long, can not meet the elimination of nuclear facilities and the three wastes are controlled Manage a large amount of sample analysis demands.Using TEVA, TRU, SR crosscurrent extraction chromatograph column can realize Pu in sample,241Am and90The one of Sr Secondary separation and measure, this method have the characteristics that separation is simple, easily operated.
Invention content
It is an object of the invention to：Realize low-activity sample in Pu,241Am and90The method of the separation determination of Sr.
Technical scheme is as follows：
In a kind of low-activity sample238-240Pu、241Am and90The method of Sr separation determinations, includes the following steps：
1) sample pretreatment
Solid sample：25g~50g samples are weighed, 100mL~200mL salpeter solutions is added in, leaches at a certain temperature 4h；Leaching liquid is collected in centrifugation, and solid residue is washed with 50mL~100mL salpeter solutions, merges solution, and it is 2 to adjust pH, is obtained Solid sample sample；
Fluid sample：200mL~500mL waters sample solution is pipetted in 1000mL beakers, it is 2 or so to adjust pH, Heating is concentrated into 200mL on electric hot plate, obtains fluid sample sample；
In solid sample sample or fluid sample sample, 1mL 1.25mol/L Ca (NO are sequentially added3)2Solution, 2~3 Drip (the NH of phenolphthalein indicator, 5mL 3.2mol/L4)2HPO4, and stir evenly, it is slowly added dropwise into dense NH4OH makes solution become light Pink colour forms Ca at this time3(PO4)2Precipitation, centrifuges 10min under 2000r/min, discards clear liquid；Precipitation 20mL~25mL 3.0mol/L HNO3+0.1mol/L Al(NO3)3Dissolving obtains lysate；
2)238-240Pu、241Am and90Sr separation and concentrations
After the valence state of plutonium is adjusted to tetravalence by addition ascorbic acid, sodium nitrite in the lysate obtained by step 1), lead to TEVA, TRU and SR crosscurrent extraction chromatograph resin column are crossed, keeps flow velocity 1mL~1.2mL/min；At this point,238-240Pu will be adsorbed On TEVA columns,241Am is attracted on TRU columns,90Sr is attracted on SR columns；
With on the hydrochloric acid solution elution TEVA columns of 20mL~25mL 0.02mol/L238-240Pu, with 15mL~20mL On the hydrochloric acid solution elution TRU columns of 3.0mol/L241Am, on 15mL~20mL 0.01mol/L salpeter solutions elution SR columns 's90Sr；
3)238-240Pu、241Am and90Sr is measured
238-240Pu、241Am leacheates prepare α sources using cerium fluoride microdeposit method, in being measured on alpha energy spectrum；
90Sr leacheates are placed 14d and are treated90Sr-90Cherenkov's counting method measures after Y balances.
The detailed process that cerium fluoride microdeposit method described in step 3) prepares α sources is：238-240Pu and241The leacheate of Am In, it is separately added into 0.1mL 0.5mg/mL cerium carrier solutions (Ce3+), the dense HF of 1.0mL are uniformly mixed, and place more than 30min, in 0.1 μm of aperture, a diameter of 25mm polypropylene material filter paper on filtered, filter paper with solid gum is attached to α stainless steels after drying On shallow bid.
Alpha energy spectrum described in step 3) measures238-240Energy selection 5.11MeV~5.50MeV of Pu.
Alpha energy spectrum described in step 3) measures241Energy selection 5.38MeV~5.54MeV of Am.
The leaching temperature of solid sample described in step 1) is 75 DEG C~85 DEG C.
Volume 1 of the salpeter solution for concentrated nitric acid and water described in step 1):1 is formulated.
The remarkable result of the present invention is：Using this analysis method, it can be achieved that a upper prop, you can complete Pu in sample 、241Am and90The separation and concentration of Sr, shortening Pu,241Am and90The analytical cycle of Sr.With can batch processing, input personnel it is few, point Analyse the advantages such as the period is short.
The analysis method to Pu,241Am、90Sr methods high income, detection limit are low, can meet the elimination of nuclear facilities and administer work Pu in low in journey project, extremely low level radioactive pollution sample,241Am and90The analysis of Sr measures.
Description of the drawings
Fig. 1 be a kind of low-activity sample of the present invention in Pu,241Am and90The method flow diagram of Sr separation determinations.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment to Pu in a kind of low-activity sample of the present invention,241Am and90Sr The method of separation determination is described in further detail.
As shown in Figure 1, in a kind of low-activity sample238-240Pu、241Am and90The method of Sr separation determinations, including following Step：
1) sample pretreatment
Solid sample：25g~50g samples are weighed, 100mL~200mL salpeter solutions is added in, leaches at a certain temperature 4h；Leaching liquid is collected in centrifugation, and solid residue is washed with 50mL~100mL salpeter solutions, merges solution, and it is 2 to adjust pH, is obtained Solid sample sample；
Fluid sample：200mL~500mL waters sample solution is pipetted in 1000mL beakers, it is 2 or so to adjust pH, Heating is concentrated into 200mL on electric hot plate, obtains fluid sample sample；
In solid sample sample or fluid sample sample, 1mL 1.25mol/L Ca (NO are sequentially added3)2Solution, 2~3 Drip (the NH of phenolphthalein indicator, 5mL 3.2mol/L4)2HPO4, and stir evenly, it is slowly added dropwise into dense NH4OH makes solution become light Pink colour forms Ca at this time3(PO4)2Precipitation, centrifuges 10min under 2000r/min, discards clear liquid；Precipitation 20mL~25mL 3.0mol/L HNO3+0.1mol/L Al(NO3)3Dissolving obtains lysate；
2)238-240Pu、241Am and90Sr separation and concentrations
After the valence state of plutonium is adjusted to tetravalence by addition ascorbic acid, sodium nitrite in the lysate obtained by step 1), lead to TEVA, TRU and SR crosscurrent extraction chromatograph resin column are crossed, keeps flow velocity 1mL~1.2mL/min；At this point,238-240Pu will be adsorbed On TEVA columns,241Am is attracted on TRU columns,90Sr is attracted on SR columns；
With on the hydrochloric acid solution elution TEVA columns of 20mL~25mL 0.02mol/L238-240Pu, with 15mL~20mL On the hydrochloric acid solution elution TRU columns of 3.0mol/L241Am, on 15mL~20mL0.01mol/L salpeter solutions elution SR columns 's90Sr；
3)238-240Pu、241Am and90Sr is measured
238-240Pu、241Am leacheates prepare α sources using cerium fluoride microdeposit method, in being measured on alpha energy spectrum；
90Sr leacheates are placed 14d and are treated90Sr-90Cherenkov's counting method measures after Y balances.
The detailed process that cerium fluoride microdeposit method described in step 3) prepares α sources is：238-240Pu and241The leacheate of Am In, it is separately added into 0.1mL 0.5mg/mL cerium carrier solutions (Ce3+), the dense HF of 1.0mL are uniformly mixed, and place more than 30min, in 0.1 μm of aperture, a diameter of 25mm polypropylene material filter paper on filtered, filter paper with solid gum is attached to α stainless steels after drying On shallow bid.
Alpha energy spectrum described in step 3) measures238-240Energy selection 5.11MeV~5.50MeV of Pu.
Alpha energy spectrum described in step 3) measures241Energy selection 5.38MeV~5.54MeV of Am.
The leaching temperature of solid sample described in step 1) is 75 DEG C~85 DEG C.
Volume 1 of the salpeter solution for concentrated nitric acid and water described in step 1):1 is formulated.

Claims (6)

1. in a kind of low-activity sample238-240Pu、241Am and90The method of Sr separation determinations, which is characterized in that including following step Suddenly：
1) sample pretreatment
Solid sample：25g~50g samples are weighed, 100mL~200mL salpeter solutions is added in, leaches 4h at a certain temperature；From The heart collects leaching liquid, and solid residue is washed with 50mL~100mL salpeter solutions, merges solution, and it is 2 to adjust pH, obtains solid-like Product sample；
Fluid sample：200mL~500mL waters sample solution is pipetted in 1000mL beakers, it is 2 or so to adjust pH, in electric heating Heating is concentrated into 200mL on plate, obtains fluid sample sample；
In solid sample sample or fluid sample sample, 1mL 1.25mol/L Ca (NO are sequentially added3)2Solution, 2~3 drop phenol (the NH of phthalein indicator, 5mL 3.2mol/L4)2HPO4, and stir evenly, it is slowly added dropwise into dense NH4OH makes solution become light powder Color forms Ca at this time3(PO4)2Precipitation, centrifuges 10min under 2000r/min, discards clear liquid；Precipitation 20mL~25mL 3.0mol/L HNO3+0.1mol/L Al(NO3)3Dissolving obtains lysate；
2)238-240Pu、241Am and90Sr separation and concentrations
After the valence state of plutonium is adjusted to tetravalence by addition ascorbic acid, sodium nitrite in the lysate obtained by step 1), pass through TEVA, TRU and SR crosscurrent extraction chromatograph resin column keep flow velocity 1mL~1.2mL/min；At this point,238-240Pu will be attracted to On TEVA columns,241Am is attracted on TRU columns,90Sr is attracted on SR columns；
With on the hydrochloric acid solution elution TEVA columns of 20mL~25mL 0.02mol/L238-240Pu, with 15mL~20mL 3.0mol/ On the hydrochloric acid solution elution TRU columns of L241Am, on 15mL~20mL 0.01mol/L salpeter solutions elution SR columns90Sr；
3)238-240Pu、241Am and90Sr is measured
238-240Pu、241Am leacheates prepare α sources using cerium fluoride microdeposit method, in being measured on alpha energy spectrum；
90Sr leacheates are placed 14d and are treated90Sr-90Cherenkov's counting method measures after Y balances.
2. in a kind of low-activity sample as described in claim 1238-240Pu、241Am and90The method of Sr separation determinations, it is special Sign is：
The detailed process that cerium fluoride microdeposit method described in step 3) prepares α sources is：238-240Pu and241In the leacheate of Am, respectively Add in 0.1mL 0.5mg/mL cerium carrier solutions (Ce3+), the dense HF of 1.0mL are uniformly mixed, and more than 30min are placed, in 0.1 μ of aperture M, it is filtered on the polypropylene material filter paper of a diameter of 25mm, filter paper is attached to solid gum on α stainless steel shallow bids after drying.
3. in a kind of low-activity sample as described in claim 1238-240Pu、241Am and90The method of Sr separation determinations, it is special Sign is：Alpha energy spectrum described in step 3) measures238-240Energy selection 5.11MeV~5.50MeV of Pu.
4. in a kind of low-activity sample as described in claim 1238-240Pu、241Am and90The method of Sr separation determinations, it is special Sign is：Alpha energy spectrum described in step 3) measures241Energy selection 5.38MeV~5.54MeV of Am.
5. in a kind of low-activity sample as described in claim 1238-240Pu、241Am and90The method of Sr separation determinations, it is special Sign is：The leaching temperature of solid sample described in step 1) is 75 DEG C~85 DEG C.
6. in a kind of low-activity sample as described in claim 1238-240Pu、241Am and90The method of Sr separation determinations, it is special Sign is：Volume 1 of the salpeter solution for concentrated nitric acid and water described in step 1):1 is formulated.
CN201711363870.5A 2017-12-18 2017-12-18 Pu in a kind of low-activity sample,241Am and90The method of Sr separation determinations Pending CN108152112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711363870.5A CN108152112A (en) 2017-12-18 2017-12-18 Pu in a kind of low-activity sample,241Am and90The method of Sr separation determinations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711363870.5A CN108152112A (en) 2017-12-18 2017-12-18 Pu in a kind of low-activity sample,241Am and90The method of Sr separation determinations

Publications (1)

Publication Number Publication Date
CN108152112A true CN108152112A (en) 2018-06-12

Family

ID=62467490

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711363870.5A Pending CN108152112A (en) 2017-12-18 2017-12-18 Pu in a kind of low-activity sample,241Am and90The method of Sr separation determinations

Country Status (1)

Country Link
CN (1) CN108152112A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109239760A (en) * 2018-08-22 2019-01-18 北京航空航天大学 Radionuclide On-site sampling concentration detection device in a kind of seawater
CN109316777A (en) * 2018-08-30 2019-02-12 中国工程物理研究院核物理与化学研究所 A kind of cerium and rare earths separation method
CN109735711A (en) * 2018-12-27 2019-05-10 中核四0四有限公司 The leaching method of plutonium in a kind of concrete
CN112285226A (en) * 2020-10-16 2021-01-29 中国人民解放军63653部队 Rapid combined analysis method for Pu-239, Sr-90 and Cs-137 in waste liquid
CN112462410A (en) * 2020-11-09 2021-03-09 中核四0四有限公司 Method for analyzing plutonium in waste ion exchange resin sample
CN113359177A (en) * 2021-04-08 2021-09-07 中国辐射防护研究院 Combined analysis method for content of Pu, Am and Sr-90 in large-mass solid environment
CN113406114A (en) * 2021-04-28 2021-09-17 中国辐射防护研究院 Combined analysis method for content of Pu, Am and U in aerosol
CN114047539A (en) * 2021-11-04 2022-02-15 山东核电有限公司 Method for measuring activity of Fe and Ni in nuclear effluent
CN116594053A (en) * 2023-07-18 2023-08-15 清华大学 The radioactive solution contains transuranic alpha nuclide, 90 Sr and 137 cs separation system and device
CN116626742A (en) * 2023-07-18 2023-08-22 清华大学 A transuranic alpha nuclide in a radioactive solution, 90 Sr and 137 method for separating Cs fast group and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85105352A (en) * 1985-07-13 1987-01-07 清华大学 The method of from radioactive liquid waste, separating actinide
US5169609A (en) * 1991-06-19 1992-12-08 The United States Of America As Represented By The United States Department Of Energy Combined transuranic-strontium extraction process
CN1092110A (en) * 1993-03-04 1994-09-14 清华大学 Concentrate the method for separating actinide elements the high activity liquid waste from producing heap

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85105352A (en) * 1985-07-13 1987-01-07 清华大学 The method of from radioactive liquid waste, separating actinide
US5169609A (en) * 1991-06-19 1992-12-08 The United States Of America As Represented By The United States Department Of Energy Combined transuranic-strontium extraction process
CN1092110A (en) * 1993-03-04 1994-09-14 清华大学 Concentrate the method for separating actinide elements the high activity liquid waste from producing heap

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ALUI´SIO S. REIS JR,ET AL: "Combined procedure using radiochemical separation of plutonium, americium and uranium radionuclides for alpha-spectrometry", 《J RADIOANAL NUCL CHEM》 *
刘波: "低放废水和环境水体中痕量Pu、U、Am、Th和Sr的快速分析方法研究", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109239760A (en) * 2018-08-22 2019-01-18 北京航空航天大学 Radionuclide On-site sampling concentration detection device in a kind of seawater
CN109316777A (en) * 2018-08-30 2019-02-12 中国工程物理研究院核物理与化学研究所 A kind of cerium and rare earths separation method
CN109316777B (en) * 2018-08-30 2021-04-06 中国工程物理研究院核物理与化学研究所 Method for separating cerium and rare earth elements
CN109735711A (en) * 2018-12-27 2019-05-10 中核四0四有限公司 The leaching method of plutonium in a kind of concrete
CN112285226A (en) * 2020-10-16 2021-01-29 中国人民解放军63653部队 Rapid combined analysis method for Pu-239, Sr-90 and Cs-137 in waste liquid
CN112462410A (en) * 2020-11-09 2021-03-09 中核四0四有限公司 Method for analyzing plutonium in waste ion exchange resin sample
CN113359177A (en) * 2021-04-08 2021-09-07 中国辐射防护研究院 Combined analysis method for content of Pu, Am and Sr-90 in large-mass solid environment
CN113406114A (en) * 2021-04-28 2021-09-17 中国辐射防护研究院 Combined analysis method for content of Pu, Am and U in aerosol
CN113406114B (en) * 2021-04-28 2022-10-21 中国辐射防护研究院 Combined analysis method for content of Pu, am and U in aerosol
CN114047539A (en) * 2021-11-04 2022-02-15 山东核电有限公司 Method for measuring activity of Fe and Ni in nuclear effluent
CN116594053A (en) * 2023-07-18 2023-08-15 清华大学 The radioactive solution contains transuranic alpha nuclide, 90 Sr and 137 cs separation system and device
CN116626742A (en) * 2023-07-18 2023-08-22 清华大学 A transuranic alpha nuclide in a radioactive solution, 90 Sr and 137 method for separating Cs fast group and application thereof
CN116626742B (en) * 2023-07-18 2023-11-07 清华大学 A transuranic alpha nuclide in a radioactive solution, 90 Sr and 137 method for separating Cs fast group and application thereof
CN116594053B (en) * 2023-07-18 2024-01-19 清华大学 The radioactive solution contains transuranic alpha nuclide, 90 Sr and 137 cs separation system and device

Similar Documents

Publication Publication Date Title
CN108152112A (en) Pu in a kind of low-activity sample,241Am and90The method of Sr separation determinations
CN103014380B (en) Method for separating neptunium from uranium product by TEVA-UTEVA extraction chromatographic column
Dulanská et al. Pre-concentration and determination of 90 Sr in radioactive wastes using solid phase extraction techniques
Dietz et al. An improved method for determining 89Sr and 90Sr in urine
CN113671555B (en) Plastic scintillator microsphere, preparation method and application
Qiao et al. Method for 236U determination in seawater using flow injection extraction chromatography and accelerator mass spectrometry
CN103344982A (en) Radiochemical analyzing method of Sr-90 in soil
Kołacińska et al. Application of flow analysis in determination of selected radionuclides
Grate et al. Radionuclide sensors for environmental monitoring: from flow injection solid-phase absorptiometry to equilibration-based preconcentrating minicolumn sensors with radiometric detection
Donard et al. Multi-isotopic determination of plutonium (239Pu, 240Pu, 241Pu and 242Pu) in marine sediments using sector-field inductively coupled plasma mass spectrometry
Mola et al. Uranium and thorium sequential separation from norm samples by using a SIA system
CN113359177B (en) Combined analysis method for content of Pu, Am and Sr-90 in large-mass solid environment
Dulanská et al. Determination of 93 Zr in radioactive waste using ion exchange techniques
Qiao et al. Method for determination of neptunium in large-sized urine samples using manganese dioxide coprecipitation and 242Pu as yield tracer
Delle Site et al. Radiochemical determination of plutonium in marine samples by extraction chromatography
CN115047059B (en) Method for determining depleted uranium content and depleted uranium proportion of pollutant in depleted uranium contaminated soil
Liu et al. Method development for plutonium analysis in environmental water samples using TEVA microextraction chromatography separation and low background liquid scintillation counter measurement
Dietz et al. Separation and preconcentration of cesium from acidic media by extraction chromatography
O’Hara et al. Quantification of technetium-99 in complex groundwater matrixes using a radiometric preconcentrating minicolumn sensor in an equilibration-based sensing approach
CN102247796A (en) Preparation method of inorganic strontium selective adsorbent
Duffey et al. Development of a rapid procedure for the measurement of uranium in drinking water by PERALS® spectrometry
CN112098557A (en) Combined analysis method for Pu-239, Sr-90 and Cs-137 in high-salinity water
CN214099177U (en) A quick collection device for radioactive iron in water
Vilas et al. Automated 90Sr separation and preconcentration in a lab-on-valve system at ppq level
CN112485273B (en) Device for collecting radioactive iron in water body and detection method

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20180612

RJ01 Rejection of invention patent application after publication