| 摘要 |
PURPOSE:To measure the concentration of tritium stably and continuously with a high sensitivity, by introducing a sample to a detecting section after water contained therein is directly electrolyzed in the form of gas to be converted to a chemical form of hydrogen molecule. CONSTITUTION:A gas sample containing tritium is introduced to an electrolytic substance 1 in an electrolytic cell 10 directly or as required via a corrosive and polluting components remover 11 to remove corrosive and polluting components such as chlorine existing in the sample. Water in the sample introduced into the electrolytic substance 1 is decomposed and hydrogen molecule is generated continuously and selectively on the cathode side and oxygen molecule done so on the anode side. Hydrogen molecule generated on the cathode side is introduced into a radiation detector 12 together with other components in the gas sample to detect the concentration of tritium.
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