| 摘要 |
PURPOSE:To detect simply and quickly the content of uranium U and thorium Th by separating U and Th from a raw material and concentrating the same then adding reagents and detecting said content from the color reaction thereof. CONSTITUTION:A sample is first pretreated and thereafter various chemicals are added and the sample is dissolved or melted to prepare an aq. soln. When such soln. is passed through a sulfuric acid type ion exchange resin, only the U and Th are held in said resin. Four kinds of reagents (thorin, neothron, morin, Alizarin Reds) are dropped to the extracted U, Th, then the reagent liquid forms various colors according to the difference in the amt. of the chelate compd. formed owing to a difference in the content of U and Th. The degree of the above-mentioned color reaction is compared with the coloration degree of a soln. having a standard concn., whereby the content of the U and Th is detected. |
