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Preparation of dead water for low background liquid scintillation counting

, : Preparation of dead water for low background liquid scintillation counting. Radioisotopes 36(3): 126-128

"Dead water", low level tritiated water is indispensable to measure tritium concentration in environmental waters using a low background liquid scintillation counter. Water produced by combustion of natural gas, or deep sea water etc. are usually used for the above purpose. A new method of reducing tritium concentration in natural water has been introduced for preparation of "dead water". This method is to combine hydrogen-oxygen mixture produced by water electrolysis with hopcalite catalyzer at Deep well water was electrolized up to 2/3 volume, and tritium concentration of recombined water was reduced to be about one third of that of the original one.

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Related references

Nakagawa T.; Sato O.; Hashimoto T., 1986: Fundamental experiments for measurements of environmental tritium with a low-background liquid scintillation spectrometer; background counting. Niigata Daigaku Sekisetsu Chiiki Saigai Kenkyu Senta Kenkyu Nenpo = Annual Report of the Research Institute for Hazards in Snowy Area, Niigata University 8: 81-89

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