FIELD: radiology. SUBSTANCE: radionuclide thallium-199 is produced from gold target irradiated by α-particles. Irradiated target is heated to 800-900 C in hydrogen chloride flow under hermetic conditions. Formed thallium chloride is absorbed with water. To prepared solution sodium chloride is added at amount necessary for preparing isotonic solution. Obtained solution is evaporated dryness and precipitate is dissolved in water for injection. Time for preparation making is 45-50 min. Valency of thallium in the end preparation is +1. Content of thallium (+3) is nonsignificant. Preparation can be used in medicine for preparing radioactive sources. EFFECT: improved method of producing. 1 dwg
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