The radiochemistry of polonium by P. E. Figgins

By P. E. Figgins

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These observations suggest a means of isolating Po tracer by first carrying on Te0 by reduction with SnC12, followed by separation of TeO from Po by reduction with S02 gas at HC1 concentrations above 2 ~. E-EXTWCTION INTO HEXONE OF POLONIUM BACK-EXTRACTED FROM HEXONE INTO 6 ~ HCL - H2S Source: M. Lindner, Private communication About j0,000 dpm of Po206 in approximately 50 lambda of hexone was added to a mixture of equal volumes of hexone and 6 I HC1. A stream of H2S was passed through the m@ture minutes.

Reagent from various acid media. 8. O N HN03 has been investigated. 60 In each experiment the initial concentration of Po was approximately 2 x 10-10 ~. The adsorption was done on a batch basis and each batch was given time to come to equilibrium before sampling and counting. 2 ~. The distribution coefficients were higher in HN03, being over 103 at the lowest acid concen- ● * Trade mme of Dow Chemical Co. , Midland, Michigan * Trade name of Rohm & Haas Chemical Co. , Philadelphia, Pa. 25 trations.

57 The extraction probably depends upon the formation of a water insoluble amine-PoClx compound. g. reagent from various acid media. 8. O N HN03 has been investigated. 60 In each experiment the initial concentration of Po was approximately 2 x 10-10 ~. The adsorption was done on a batch basis and each batch was given time to come to equilibrium before sampling and counting. 2 ~. The distribution coefficients were higher in HN03, being over 103 at the lowest acid concen- ● * Trade mme of Dow Chemical Co.

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