Polonium carbon oxides

The solubility of "oxidized polonium—probably the dioxide—in aqueous sodium carbonate is about 0.3 mg (of Po210)/liter and does not change appreciably with the carbonate concentration. However, the solubility in aqueous ammonium carbonate increases from 0.089 mg (of Po210)/ liter in 0.25 M solution to 5.2 mg/liter in 0.75 M solution (104, P- 53). 

Both polonium derivatives are chemically very stable, requiring hot fuming nitric acid for their decomposition. However, they char rapidly under the intense alpha bombardment and attempted analyses with acetyl-acetone labeled with carbon-14 in the 1 and 3 positions were unsuccessful. It is interesting that the corresponding yellow oxide, prepared by treating (VI) with aqueous hydrogen peroxide, reverts to (VI) on treatment with aqueous alkali (12). 

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