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Title :Development of Rapid Sampling System of Atmospheric Water Vapor for Tritium Measurement
Authors :Akata, Naofumi
Kakiuchi, Hideki
Tanaka, Masahiro
Shima, Nagayoshi
Shiroma, Yoshitaka
Tokonami, Shinji
Hosoda, Masahiro
Ishikawa, Yoshio
Furukawa, Masahide
Sanada, Tetsuya
Issue Date :12-Jun-2018
Abstract :We have developed a rapid sampling system for measuring the tritium in atmospheric water vapor. The system consists of a high-efficiency particulate air filter cartridge, an oil-free compressor, a water-vapor-separating module with hollow fiber membranes, two cold traps, and an oil-free rotary pump. Compressed air (0.4 - 0.7MPa) is introduced into the water-vapor-separation module, which consists of a stainless steel column containing polyimide membrane tubes. Water vapor permeates through the tubes and is collected by cold traps cooled with dry ice and ethanol. The module is heated with a flexible heater to control its temperature. We have determined the recovery yields under various sampling conditions and find that this system can collect atmospheric water vapor with a recovery yield of >99%. This system can thus be a useful tool for understanding short-term observations of tritium in atmospheric water vapor.
URL :https://doi.org/10.1585/pfr.13.3405064
Type Local :雑誌掲載論文
ISSN :1880-6821
Publisher :The Japan Society of Plasma Science and Nuclear Fusion Research
URI :http://hdl.handle.net/20.500.12000/47467
Citation :Plasma and Fusion Research Vol.13
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Science)

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