Studies on Analytical Methods for Trace Elements in Metals by Using Radioactive Isotopes. VI : The Analytical Method for Radioactive Nuclides Contaminating the Surface of Several Metals

概要

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The analytical methods for radioactive nuclides which contaminated the metallic surfaces were studied. The test specimens were dipped into the nitrate solution of fission products which was adjusted to pH of 1.4. The radioactive nuclides were removed from the surfaces of specimens by means of anode electrolysis. Zirconium-95, niobium-95 and yttrium-90 was coprecipitated with the metal hydroxide and separated as zirconium phosphate, niobic acid and yttrium oxalate. Ruthenium-106-Rhodium-106 were precipitated as sulfide from the filtrate. Strontium-90 was determined as its oxalate and caesium-137 as its perchlorate. From the experimental results, it was supposed that the radioactive contamination with fission products solution of pH 1.4 was occurred by the surface adsorption of radioactive nuclides.
東北大学の論文