| 摘要 |
PURPOSE:To ensure the simple and high-accuracy measurement for the nuclide in the sample by using the specified electrodeposition cell to which the detacheable bottom plate doubling as the cathode electrodeposition plate, electrolyzing the sample solution to stick the alpha rays discharge nuclide to the electrodeposition plate, and then detaching the electrodeposition plate to carry out the measurement. CONSTITUTION:Cathode electrodeposition plate 2 is attached watertight to the bottom part of cell tube 3 by attaching by screw pedestal 4 to the lower part of tube 3, and cover 5 is put onto the upper part of plate 2 along with distribution of basket-type rotary anode 6 inside plate 2. Thus electrodeposition cell 1 is formed. Then the tested sample liquid and the electrolyte solution are put into cell 1 in the equal amount to each other, and then anode 6 is soaked into the solution to cool down the outer surface of plate 2 of cell 1 via the cooling component and to be kept at the fixed temperature (preferably at 30 deg.-40 deg.C of inner temperature). At the same time, anode 6 is turned to secure conduction between electrodes 6 and 2, thus ensuring electrodeposition of the alpha rays discharge nuclide in the sample liquid to plate 2. After this, plate 2 is detached, and the concentration is measured for each nuclide by means of alpha rays measuring instrument (waveheight analyzer).
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