Unlock instant, AI-driven research and patent intelligence for your innovation.

Electro-deposition method of separating yttrium-90 from strontium-90-yttrium-90 system

An electrodeposition and system technology, applied in the improvement of process efficiency, photography process, instruments, etc., can solve the problems of complicated operation steps and cannot be loaded for a long time, and achieve the effect of avoiding instability

Inactive Publication Date: 2004-12-29
TSINGHUA UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since organic ion exchange resins and extractants are not resistant to strong irradiation of strontium-90 and yttrium-90, they cannot support strontium-90-yttrium-90 for a long time, and this is precisely from strontium-90-yttrium-90 Necessary for the separation of yttrium in a balanced system; secondly, the above methods are two-step methods of separation first and then loading, and the operation steps are relatively complicated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electro-deposition method of separating yttrium-90 from strontium-90-yttrium-90 system
  • Electro-deposition method of separating yttrium-90 from strontium-90-yttrium-90 system
  • Electro-deposition method of separating yttrium-90 from strontium-90-yttrium-90 system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] use as figure 1 The type A electrolytic cell shown includes: 1-stainless steel electrolytic cell, 2-platinum anode, 3-stirring paddle, 4-electrolyte, 5-cathode terminal, 6-stainless steel sheet. Add 10 milliliters of pH value to be 1.3, concentration is the ammonium sulfate electrolytic base solution of 0.05 mol / liter, then add 1 milliliter of total radioactivity and be the strontium-90-yttrium-90 balance solution of 20.0 microcuri, use platinum as the anode, use A stainless steel disc (Φ20 mm, thickness 0.5 mm) was used as the cathode.

[0018] Apply a DC voltage of 10 volts to the electrode, control the current density to 0.4 A / cm2, and the electrolysis time is 25 minutes. The radionuclide yttrium-90 is deposited on the cathode stainless steel disc, while the radionuclide strontium-90 remains in the electrolysis. solution; then add 1 milliliter of ammonium hydroxide solution with a concentration of 0.5 mol / liter to the electrolytic cell to alkalinize the electrolyte,...

Embodiment 2

[0020] use as figure 2 The type B electrolytic cell shown includes: 2-anode, 4-electrolyte, 7-platinum cathode or cardiovascular stainless steel support, 8-glass electrolytic cell body. Adding 10 milliliters of pH value is 3.5, and concentration is the ammonium sulfate electrolysis base solution of 0.3 mol / liter, then adds 1 milliliter of total radioactivity and is the strontium-90-yttrium-90 balance solution of 3.0 Curies, uses platinum as anode, uses A platinum wire with a diameter of Φ1 mm is used as the cathode.

[0021] Apply a DC voltage of 20 volts to the electrode, control the current density to 0.9 A / cm2, and the electrolysis time is 60 minutes. The radionuclide yttrium-90 is deposited on the cathode platinum wire, while the radionuclide strontium-90 remains in the electrolysis solution, then add 1 milliliter of ammonium hydroxide solution with a concentration of 3 mol / liter to the electrolytic cell to alkalinize the electrolyte, disconnect the power supply, and sto...

Embodiment 3

[0022] Embodiment 3: adopt B type electrolytic cell (see figure 2 ), with a stainless steel stent that expands the cardiovascular system as the cathode. Add 10 ml of ammonium sulfate electrolytic bottom solution with a pH value of 2.5 and a concentration of 0.15 mol / liter, and then add 1 ml of a strontium-90-yttrium-90 equilibrium solution with a total activity of 500 microcuri.

[0023] Apply a DC voltage of 15 volts to the electrode, control the current density to 0.6 A / cm2, and electrolyze for 40 minutes. The radionuclide yttrium-90 is deposited on the cathode cardiovascular stainless steel stent, while the radionuclide strontium-90 remains in the electrolytic solution; then adding concentration to the electrolytic cell is 1 milliliter of ammonium hydroxide solution of 1.5 mol / liter to alkalinize the electrolytic solution, disconnect the power supply, and stop electrodeposition; then take out the cardiovascular stainless steel support as the negative electrode, and use Co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention uses ammonium sulfate solution and radionuclide containing Sr-90 and Y-90 as electrolytic base liquor, uses platinum wire or stainless steel as cathode, and adopts electrolysis method to make trivalent Y be reduced and depositied on the electrode to separate out from Sr-90 in the solution. Said method can avoid the instability of extractant and organic ion exchange resin due to strong radionucleide Sr-90 and Y-90, can implement separation and loading processes by one-step operation, it can be made into medical Y-90 solution, also can be firmly attached to the stainless steel piece or cardiovascular stainless steel supporting frame, and can be used for clinical therapy.

Description

technical field [0001] The invention belongs to the field of isotope separation and applied nuclear electrochemistry, and relates to a process for separating yttrium-90 from a strontium-90-yttrium-90 equilibrium system by using an electrodeposition method. technical background [0002] Strontium-90 and its daughter yttrium-90 are both β-radioactive nuclides, which can be used in radiotherapy, such as the prevention of restenosis after coronary angioplasty or the treatment of malignant tumors. The half-life of strontium-90 is 28.7 years, and the fractions that enter the vital organs of the human body after inhalation or ingestion are 0.28 and 0.21 respectively, which belong to the highly toxic group of radionuclides. The half-life of yttrium-90 is 64 hours, and the fractions that enter the vital organs of the human body after inhalation or ingestion are 0.19 and 7.5E-5 respectively, belonging to the poisoning group. It can be seen that it is safer to use yttrium-90 without s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C25C1/22
CPCY02P10/20
Inventor 田国新王建晨张平贾瑞和
Owner TSINGHUA UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com