Abstract: The present invention relates to a novel method for preparing an intermediate of Chemical Formula 3, wherein the intermediate can be effectively used in the synthesis of a xanthine oxidase inhibitor.

Abstract: The present invention relates to a method for preparing an intermediate for synthesis of a xanthine oxidase inhibitor and, more specifically, to a method for preparing compounds of chemical formulas 2 and 4 by using low-priced starting materials and ligands and employing chelating extraction and purification techniques.

Abstract: The present invention relates to a novel method for preparing an intermediate of Chemical Formula 2, wherein the intermediate can be effectively used in the synthesis of a xanthine oxidase inhibitor.

Abstract: The present invention relates to a novel preparation method that can be advantageously utilized for the synthesis of a xanthine oxidase inhibitor of Chemical Formula 1.

Abstract: The present invention relates to a method for simultaneous analysis of radiocarbon and tritium, the method including (i) mixing a radioactive waste sample containing a radiocarbon nuclide and tritiated water, and an oxidizing agent; (ii) oxidizing the radiocarbon nuclide in the radioactive waste sample to a gas containing an oxide of the radiocarbon nuclide by the oxidizing agent while suppressing volatilization of compounds containing gamma radionuclides other than the radiocarbon nuclide and tritium; (iii) discharging the gas containing an oxide of the radiocarbon nuclide by injecting an inert gas to the mixture; (iv) vaporizing and discharging the tritiated water in the mixture; and (v) analyzing radioactivity of radiocarbon and tritium from the discharged gas containing an oxide of the radiocarbon nuclide and tritiated water, and an apparatus for analysis of the same.

Abstract: The present invention relates to a method of recycling C-14 in a spent resin, the method includes: i) heating a spent resin raw material including 14CO2 in the presence of moisture by microwave irradiation; ii) refluxing, by condensation, water vapor in a first processing gas produced by the microwave irradiation and released from the spent resin raw material; and iii) removing water vapor from the first processing gas by the refluxing, and transporting a second processing gas including 14CO2, which is released from the spent resin raw material, to the outside, and to an apparatus for recycling the same.

Abstract: The present invention relates to a method of separating and removing a radioactive nuclide, particularly, C-14 and tritium from a radioactive waste resin, and an equipment therefor. The method of treating a radioactive waste resin of the present invention includes recycling of condensate water from which a C-14 radionuclide in the condensate water is removed, into a treatment part for a radioactive waste resin.

Abstract: The present invention relates to a method for simultaneous analysis of radiocarbon and tritium, the method including (i) mixing a radioactive waste sample containing a radiocarbon nuclide and tritiated water, and an oxidizing agent; (ii) oxidizing the radiocarbon nuclide in the radioactive waste sample to a gas containing an oxide of the radiocarbon nuclide by the oxidizing agent while suppressing volatilization of compounds containing gamma radionuclides other than the radiocarbon nuclide and tritium; (iii) discharging the gas containing an oxide of the radiocarbon nuclide by injecting an inert gas to the mixture; (iv) vaporizing and discharging the tritiated water in the mixture; and (v) analyzing radioactivity of radiocarbon and tritium from the discharged gas containing an oxide of the radiocarbon nuclide and tritiated water, and an apparatus for analysis of the same.

Abstract: The present invention relates to a method of separating and removing a radioactive nuclide, particularly, C-14 and tritium from a radioactive waste resin, and an equipment therefor. The method of treating a radioactive waste resin of the present invention includes recycling of condensate water from which a C-14 radionuclide in the condensate water is removed, into a treatment part for a radioactive waste resin.