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A method for determining strontium 90 in milk without evaporation and burning of the sample

, : A method for determining strontium 90 in milk without evaporation and burning of the sample. Veterinariya, Moscow, USSR (3): 67-69

A simplified radiochemical method for determining 90Sr in milk is described. The milk is clotted with HCl, and the whey, containing 90-96% of the 90Sr, is filtered. 50-60 ml of saturated oxalic acid solution is added to 1 l whey, and after precipitation with NH3, the oxalates are heated for 1 h at 600-700 deg C until carbonates are formed. The carbonates are dissolved in HCl, and the hydroxides are precipitated with NH3 and removed by filtration.


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