A New concept sensor for determination of oxygen and hydrogen peroxide concentrations in nuclear reactor coolant

Sato, Tomonori ; Miwa, Yukio; Tsukada, Takashi ; Uchida, Shunsuke

At the surface of a pure metal, a particular half cell reaction corresponding to an exposed water chemistry condition occurs. In principle, O $_{2}$ and H $_{2}$ O $_{2}$ concentrations under irradiation condition can be determined by the comparison of the redox potential responses of some kind of pure metals corresponding to exposed condition. We are developing a new array-type sensor based on this concept to determine O $_{2}$ and H $_{2}$ O $_{2}$ concentrations in aqueous environment under irradiation. In order to confirm the concept of sensor, responses of the redox potentials of pure metals to the changes in O $_{2}$ and H $_{2}$ O $_{2}$ concentrations were measured under non-irradiated condition. (1) The different responses of redox potentials to O $_{2}$ and H $_{2}$ O $_{2}$ concentrations were obtained for the pure Fe, Cr, Zr and Pt electrodes. (2) The possibility of the concept of new array-type sensor to determine the O $_{2}$ and H $_{2}$ O $_{2}$ concentrations was confirmed.

Language	:	English
Journal	:	Proceedings of 14th International Conference on Environmental degradation of Materials in Nuclear Power Systems (CD-ROM)
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Pages	:	p.1041 - 1052
Publication Year/Month	:	2009/08
Meeting title	:	14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems
Held date	:	2009/08
Location (city)	:	Virginia Beach
Location (country)	:	U.S.A.
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Keywords	:	no keyword
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Article of JAEA R&D Review	:
Cooperating Institute	:	文部科学省

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Registration No. : BB20090918
JAEA Abstracts No. :
Paper Submission No. : 13960

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