A New Method of Preparing Colloidal $sup 32$P Labelled Chromium Phosphate with High Specific Activity, for Therapeutic Use; NOUVELLE METHODE DE PREPARATION DU RADIOPHOSPHATE DE CHROME COLLOIDAL A HAUTE ACTIVITE SPECIFIQUE POUR USAGE THERAPEUTIQUE. ESSAIS BIOLOGIQUES DE LA SUSPENSION
A new method for the preparation of colloidal P/sup 32/labeled chromium phosphate is presented. It is based on the reduction of chromic acid in an anhydious medium in the presence of labeled phosphoric acid at a temperature higher than 110 deg C. Ethyl alcohol is used as the reducer, and normal butanol is used as the reaction medium. The purification of commercial P/sup 32/ synthesis of chromium phosphate, and elimination of adsorbed soluble phosphates are described in detail. The yield is 50 to 90%. The characteristics of the colloidal solution of chromium phosphate are discussed. (J.S.R.) The effects of small quantities (3 to 5 mg/cm/sup 3/) of various semiconductors on the radiochemical transformations produced by Co/sup 60/ gamma rays or 20-kev x rays (tungsten target) in aqueous solution were studied. Several experiments were also carried out with platinum black and palladium black. The results of oxidation of uranous sulfate and potassium iodide, and the reduction of ferric o- phemnthroline, snd the bleaching of methylene blue are discussed. (auth)
- Research Organization:
- Inst. de Physique biologique, Strasbourg
- NSA Number:
- NSA-13-006451
- OSTI ID:
- 4290089
- Report Number(s):
- A/CONF.15/P/1220
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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