α線およびγ線スペクトロメトリによる水と有機溶媒中のラドン分配係数の研究

浜中 俊一; 静間 清; 温 小瓊; 岩谷 和夫

doi:10.3769/radioisotopes.47.617

Investigation of Radon Distribution Coefficients in Water and Organic Solvents by Means of Alpha- and Gamma-ray Spectrometry

Shunichi HAMANAKA, Kiyoshi SHIZUMA, Xiao-qiong WEN, Kazuo IWATANI

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Keywords: radon, distribution coefficient, toluene, mixed-xylene, p-xylene, mole fraction, gamma-ray spectrometry, alpha-ray spectrometry

JOURNAL FREE ACCESS

1998 Volume 47 Issue 8 Pages 617-622

DOI https://doi.org/10.3769/radioisotopes.47.617

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Abstract

The distribution coefficients of radon in water: air phase and organic solvents: air phase have been determined by means of gamma-ray spectrometry and liquid-scintillation alpha-ray spectrometry. Radon partitioning between two phases has been performed using a separatory funnel. The distribution coefficients of radon between water: air phase, toluene: air phase and mixed-xylene: air phase at 20°C and p-xylene: air phase at 17°C were obtained to be 0.264±0.007, 13.3±0.8, 14.5± 0.8 and 15.7±0.9, respectively. The distribution of radon into three phases (water, organic solvent and air phase) has been also investigated and the results were in agreement with those of two-phase experiments.

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