摘要:
Technetium-99 is quantitatively determined in samples containing uranium using extraction chromatography to remove uranium which otherwise interferes in detecting technetium-99 in low concentrations.
摘要:
PROTACTINIUM URANIUM AND THORIUM ARE SEPARATED FROM AN AQUEOUS NITRIC ACID SOLUTION OF NEUTRON-IRRADIATED THORIUM CONTAINING THESE ELEMENTS AND FISSION PRODUCTS BY CONTACTING UNDER NET NITRATE DEFICIENT CONDITIONS, THE ACID SOLUTION WITH AN ORGAIC SOLUTION OF ATRIALKYL PHOSPHATE IN AN INERT ORGANIC DILUENT, THEREBY PREFERENTIALLY EXTRACTING URANIUM AND THORIIUM INTO THE ORGANIC PHASE WHILE CONFINING PROTACTINIUM AND FISSION PRODUCTS TO THE AQUEOUS PHASE. AFTER SCRUBBING THE ORGANIC PHASE WITH A AQUEOUS SOLUTION OF AN INORGANIC NITRATE SALT TO REMOVE SMALL AMOUNTS OF PROTACTINUM AND FISSION PRODUCTS, THE TOW PHASES ARE SEPARATED AND THORIUM AND URANIUM ARE SEPARATELY RECOVERED FROM THE ORGANIC PHASE.
摘要:
An improved process for recovering irradiated nuclear reactor fuel material is disclosed. This process includes the steps of extracting uranium, plutonium and neptunium from a solution of irradiated fuel, passing this stream to a reflux column, where a high saturation of uranium is maintained. Separation of uranium from plutonium and neptunium, and further decontamination of uranium results from this high saturation. This process is simple, has a high recovery efficiency and high decontamination, uses relatively small amounts of process reagents and produces a relatively small volume of radioactive waste material.
摘要:
Disclosed herein is a sterile nonpyrogenic composition and method for preparing Technetium 99m sulfur colloid containing a chelating agent utilized in the scanning of liver and other organs of the body.
摘要:
This invention relates to a method of selectively removing neptunium values from a gaseous mixture containing neptunium hexafluoride and uranium hexafluoride by passing the mixture through a bed of pelletized cobaltous fluoride at a temperature in the range 220* F. to 440* F. to effect removal of neptunium by the cobaltous fluoride.