CN112558139A - A kind of133Preparation method of standard source of Ba activated carbon filter box - Google Patents

A kind of133Preparation method of standard source of Ba activated carbon filter box Download PDF

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Publication number
CN112558139A
CN112558139A CN202011399098.4A CN202011399098A CN112558139A CN 112558139 A CN112558139 A CN 112558139A CN 202011399098 A CN202011399098 A CN 202011399098A CN 112558139 A CN112558139 A CN 112558139A
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China
Prior art keywords
activated carbon
rotary
solution
standard
rotary bottle
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CN202011399098.4A
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Inventor
夏文
叶宏生
陈克胜
宋鑫鹏
林敏�
徐利军
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China Institute of Atomic of Energy
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China Institute of Atomic of Energy
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/02—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids
    • G01T7/04—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids by filtration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/005—Details of radiation-measuring instruments calibration techniques

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

The disclosure belongs to the field of preparation of standard sources of radioactive nuclides, and particularly relates to a method for preparing a standard source of radioactive nuclides133A preparation method of a standard source of a Ba activated carbon filter box. The method comprises the following steps: (1) radionuclide of desired activity and concentration133Ba standard solution, transferring to a rotary bottle after quantification; (2) adding activated carbon into the spinner flask solution in the step (1); (3) installing the rotary bottle into a rotary evaporator, heating until the solution in the rotary bottle is slightly boiled and evaporating until the activated carbon is dried; (4) and (4) putting the activated carbon obtained in the step (3) into a filter box. Through the mode of rotary evaporation, accomplish matrix absorption, drying, mixing process in same equipment, reduced radioactive material and shifted to carry out drying and mixing process simultaneously, showing and reducing operating time. An inward convex stirring tank is designed in the rotary bottle, so that the problem that the active carbon particles are difficult to mix with133The Ba standard solution is mixed evenly.

Description

A kind of133Preparation method of standard source of Ba activated carbon filter box
Technical Field
The disclosure belongs to the field of preparation of standard sources of radioactive nuclides, and particularly relates to a method for preparing a standard source of radioactive nuclides133A preparation method of a standard source of a Ba activated carbon filter box.
Background
Radionuclides133Ba(T1/210.5a) with131I(T1/28.02d) has very similar gamma spectra, which are the objects of major interest in nuclear plant operation, nuclear emergency and environmental monitoring, but due to their short half-life there is a lot of inconvenience in the preparation of the delivery standard source and therefore the use thereof133Ba is often used as a surrogate nuclide for the preparation of delivery standard sources, in which it is uniformly distributed133One of the standard sources of Ba activated carbon cartridges is commonly used.
Generally, the preparation of the radioactive nuclide source mostly adopts a matrix adsorption-drying-mixing-dilution mode, radioactive materials need to be processed and transferred according to steps, radioactive nuclide loss and pollution hidden dangers exist, and the time consumption is long. There is an urgent need for a method for effectively reducing the radioactive material transfer step and the operation time133A preparation method of a standard source of a Ba activated carbon filter box.
Disclosure of Invention
Objects of the invention
In light of the problems of the prior art, the present disclosure provides a method for manufacturing an activated carbon cartridge with adsorbed radionuclides that is capable of effectively reducing radioactive material transfer steps and losses, and significantly reducing manufacturing time.
(II) technical scheme
In order to solve the problems existing in the prior art, the method is realized by the following technical scheme:
a kind of133The preparation method of the standard source of the Ba activated carbon filter box comprises the following steps:
(1) radionuclide of desired activity and concentration133Ba standard solution, transferring to a rotary bottle after quantification;
(2) adding activated carbon into the spinner flask solution in the step (1);
(3) installing the rotary bottle into a rotary evaporator, heating until the solution in the rotary bottle is slightly boiled and evaporating until the activated carbon is dried;
(4) and (4) putting the activated carbon obtained in the step (3) into a filter box.
Preferably, the total volume of the mixture obtained after adding the activated carbon into the rotary bottle in the step (2) is not more than half of the volume of the rotary bottle.
Preferably, the total volume of the mixture obtained after the activated carbon is added into the rotary bottle in the step (2) is 1/3-1/2 of the volume of the rotary bottle.
Preferably, the required concentration of radionuclide in said step (1)133The standard solution of Ba can be obtained by diluting with a diluent, wherein the diluent is water, ethanol or isopropanol.
Preferably, the heating system of the rotary evaporator is heated by a water bath, and the heating temperature is 50-100 ℃.
Preferably, the heating temperature of the heating system of the rotary evaporator is 55-75 ℃.
Preferably, the rotation speed of the rotation system of the rotary evaporator is 1-50 r.min-1。
Preferably, the rotation speed of a rotation system of the rotary evaporator is 10-20 r.min-1。
Preferably, the time of the rotary evaporation is 60-120 min.
Preferably, the pressure of the negative pressure system of the rotary evaporator is-60 to-99 kPa.
Preferably, the pressure of the negative pressure system of the rotary evaporator is-85 to-95 kPa.
Preferably, the volume of the rotary bottle is 0.5-50L, and preferably 2-5L.
Preferably, the inner wall of the rotary bottle is uniformly distributed with stirring grooves which are convex inwards.
In the rotary bottle provided by the present disclosure, in the heating process of the mixture in the rotary bottle, the diluent is volatilized and condensed into the distillate collection bottle.
(III) advantageous effects
The present disclosure provides a method for preparing by using rotary evaporator instead of traditional matrix adsorption-drying-mixing mode133Ba activated carbon. Through the mode of rotary evaporation, accomplish matrix absorption, drying, mixing process in same equipment, reduced radioactive material and shifted to carry out drying and mixing process simultaneously, showing and reducing operating time. Simultaneously, the problems that the particle size of the active carbon particles is small and the active carbon particles are not easy to be mixed with each other are solved133The Ba standard solution is uniformly mixed, and an inward convex stirring tank is specially designed in the rotary bottle.
Detailed Description
The present application will be further described with reference to specific examples.
Example 1
A kind of133The preparation method of the standard source of the Ba activated carbon filter box comprises the following steps:
(1) radionuclide of desired activity and concentration133Ba standard solution, transferring to a rotary bottle after quantification; radionuclides133The standard Ba solution is obtained by diluting with a diluent, and the diluent is water.
(2) Adding 400g of activated carbon into the solution in the rotary bottle in the step (1), wherein the total volume of the mixture obtained after adding the activated carbon does not exceed 1/2 of the volume of the rotary bottle. The inner wall of the rotary bottle is uniformly distributed with stirring grooves which are convex inwards.
(3) The rotary bottle is arranged in a rotary evaporator and heated until the solution in the rotary bottle is slightly boiled
Evaporating until the activated carbon is dried, wherein the heating temperature of the heating system of the rotary evaporator is 55 ℃, and the rotation speed of the rotating system of the rotary evaporator is 10 r.min-1The evaporation time is 110 min; the pressure of the negative pressure system was-85 kPa.
(4) And (4) putting the activated carbon obtained in the step (3) into a filter box.
In the rotary bottle provided by the embodiment, the diluent is volatilized and condensed into the distillate collecting bottle in the heating process of the mixture in the rotary bottle.
Example 2
A kind of133The preparation method of the standard source of the Ba activated carbon filter box comprises the following steps:
(1) radionuclide of desired activity and concentration133Ba standard solution, transferring to a rotary bottle after quantification; radionuclides133The standard Ba solution is obtained by diluting with a diluent, and the diluent is water.
(2) Adding 300g of activated carbon into the solution in the rotary bottle in the step (1), wherein the total volume of the mixture obtained after adding the activated carbon does not exceed 1/3 of the volume of the rotary bottle. The inner wall of the rotary bottle is uniformly distributed with stirring grooves which are convex inwards.
(3) The rotary bottle is arranged in a rotary evaporator and heated until the solution in the rotary bottle is slightly boiled
Evaporating until the activated carbon is dried, wherein the heating temperature of the heating system of the rotary evaporator is 75 ℃, and the rotation speed of the rotating system of the rotary evaporator is 20 r.min-1The evaporation time is 100 min; the pressure of the negative pressure system was-95 kPa.
(4) And (4) putting the activated carbon obtained in the step (3) into a filter box.
In the rotary bottle provided by the embodiment, the diluent is volatilized and condensed into the distillate collecting bottle in the heating process of the mixture in the rotary bottle.
Example 3
A kind of133The preparation method of the standard source of the Ba activated carbon filter box comprises the following steps:
(1) radionuclide of desired activity and concentration133Ba standard solution, transferring to a rotary bottle after quantification; radionuclides133The standard Ba solution is obtained by diluting with a diluent, namely isopropanol.
(2) Adding 200g of activated carbon into the solution in the spinner flask in the step (1), wherein the volume of the spinner flask is 4L; the total volume of the mixture obtained after the addition of activated carbon does not exceed 1/3 for the volume of the spinner flask. The inner wall of the rotary bottle is uniformly distributed with stirring grooves which are convex inwards.
(3) The rotary bottle is arranged in a rotary evaporator and heated until the solution in the rotary bottle is slightly boiled
Evaporating until the activated carbon is dried, wherein the heating temperature of the heating system of the rotary evaporator is 100 ℃, and the rotation speed of the rotating system of the rotary evaporator is 40 r.min-1The evaporation time is 60 min; the pressure of the negative pressure system was-70 kPa.
(4) And (4) putting the activated carbon obtained in the step (3) into a filter box.
In the rotary bottle provided by the embodiment, the diluent is volatilized and condensed into the distillate collecting bottle in the heating process of the mixture in the rotary bottle.
Example 4
A kind of133The preparation method of the standard source of the Ba activated carbon filter box comprises the following steps:
(1) radionuclide of desired activity and concentration133Ba standard solution, transferring to a rotary bottle after quantification; radionuclides133The Ba standard solution is obtained by diluting with a diluent, and the diluent is ethanol.
(2) Adding 300g of activated carbon into the solution in the spinner flask in the step (1), wherein the volume of the spinner flask is 5L, and the total volume of the mixture obtained after adding the activated carbon does not exceed 1/3 of the volume of the spinner flask. The inner wall of the rotary bottle is uniformly distributed with stirring grooves which are convex inwards.
(3) The rotary bottle is arranged in a rotary evaporator and heated until the solution in the rotary bottle is slightly boiled
Evaporating until the activated carbon is dried, wherein the heating temperature of the heating system of the rotary evaporator is 50 ℃, and the rotation speed of the rotating system of the rotary evaporator is 50 r.min-1The evaporation time is 120 min; the pressure of the negative pressure system was-99 kPa.
(4) And (4) putting the activated carbon obtained in the step (3) into a filter box.
In the rotary bottle provided by the embodiment, the diluent is volatilized and condensed into the distillate collecting bottle in the heating process of the mixture in the rotary bottle.

Claims (10)

1. A kind of133The preparation method of the standard source of the Ba activated carbon filter box is characterized by comprising the following steps of:
(1) radionuclide of desired activity and concentration133Ba standard solution, transferring to a rotary bottle after quantification;
(2) adding activated carbon into the spinner flask solution in the step (1);
(3) installing the rotary bottle into a rotary evaporator, heating until the solution in the rotary bottle is slightly boiled and evaporating until the activated carbon is dried;
(4) and (4) putting the activated carbon obtained in the step (3) into a filter box.
2. The method of claim 1, wherein the total volume of the mixture obtained after the activated carbon is added to the spinner flask in step (2) is no more than half the volume of the spinner flask.
3. The method according to claim 1 or 2, wherein the total volume of the mixture obtained after adding the activated carbon into the spinner flask in the step (2) is 1/3-1/2 of the volume of the spinner flask.
4. The method according to claim 1, wherein the required concentration of radionuclide in step (1)133The Ba standard solution is obtained by diluting with a diluent, wherein the diluent is water, ethanol or isopropanol.
5. The method according to claim 1, wherein the heating system of the rotary evaporator is heated by a water bath, and the heating temperature is 50-100 ℃.
6. The method of claim 1, wherein the rotation rate of the rotary evaporator is 1-50 r-min-1。
7. The method according to claim 1, wherein the time of the rotary evaporation is 60-120 min.
8. The method according to claim 1, characterized in that the pressure of the negative pressure system of the rotary evaporator is between-60 and-99 kPa.
9. The method according to claim 1, wherein the spinner flask has a volume of 0.5 to 50L, preferably 2 to 5L.
10. The method of claim 1, wherein the interior wall of the spinner flask is uniformly distributed with inwardly projecting agitation channels.
CN202011399098.4A 2020-12-02 2020-12-02 A kind of133Preparation method of standard source of Ba activated carbon filter box Pending CN112558139A (en)

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Citations (6)

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Publication number Priority date Publication date Assignee Title
CN101516408A (en) * 2006-07-19 2009-08-26 史密丝克莱恩比彻姆公司 Method for radiolabeling formulations for gamma scintigraphy assesment
CN108873055A (en) * 2018-07-16 2018-11-23 中国原子能科学研究院 A kind of drip-injection method in radioaerosol standard for filter of PVD source
CN210021198U (en) * 2019-11-14 2020-02-07 成都道合尔医药技术有限公司 Rotary evaporation separator
CN111545172A (en) * 2020-05-11 2020-08-18 清华大学 Supported adsorbent and preparation method and application thereof
CN111920966A (en) * 2019-05-13 2020-11-13 深圳市大西塔科技有限公司 Radioactive particle, and preparation method and application thereof
CN111939276A (en) * 2020-08-26 2020-11-17 成都纽瑞特医疗科技股份有限公司 Carbon microsphere loaded with metal nuclide, preparation method and application

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101516408A (en) * 2006-07-19 2009-08-26 史密丝克莱恩比彻姆公司 Method for radiolabeling formulations for gamma scintigraphy assesment
CN108873055A (en) * 2018-07-16 2018-11-23 中国原子能科学研究院 A kind of drip-injection method in radioaerosol standard for filter of PVD source
CN111920966A (en) * 2019-05-13 2020-11-13 深圳市大西塔科技有限公司 Radioactive particle, and preparation method and application thereof
CN210021198U (en) * 2019-11-14 2020-02-07 成都道合尔医药技术有限公司 Rotary evaporation separator
CN111545172A (en) * 2020-05-11 2020-08-18 清华大学 Supported adsorbent and preparation method and application thereof
CN111939276A (en) * 2020-08-26 2020-11-17 成都纽瑞特医疗科技股份有限公司 Carbon microsphere loaded with metal nuclide, preparation method and application

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Title
刘友平等: "《理化基本技能训练》", 31 August 2014, 中国医药科技出版 *
夏文等: "133Ba活性炭滤盒源制备方法研究", 《同位素》 *

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