Abstract
A ring-oven method is described for determining cesium-137 in irradiated uranium solutions. A small drop of the solution is placed on a pre-formed ferric hydroxide precipitate situated at the center of a filter-paper. The paper is positioned on a ring oven, and washed with ammonia solution and water. The cesium-137 migrates to the ring zone, and the other fission products and uranium stay in the center of the paper. The cesium-137 in the ring zone is determined by using a gamma scintillation spectrometer. The method compares well with an ion-exchange procedure. (auth)
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