Abstract
The experiments on the degassing of dissolved 85Kr by the N2-stripping method were carried out to examine the influence of temperature and properties of solvent, as well as flow rate of N2 gas on the degassing efficiency.
The half-life period in case of the decrease in concentration of the dissolved 85Kr which was used as an index of degassing efficiency, was proportional to the reciprocal of temperature and was inversely proportional to the flow rate of N2 gas. It became longer with increasing the viscosity of solvent. No influence on the degassing efficiency was observed to be exercised by the solubility of Kr gas in solvent and the surface tension of solvent. For organic solvents belonging to a homologous series, the half-life period became longer with increasing the carbon number, molecular weight and boiling point of solvent, respectively.
