1999 Volume 1999 Issue 6 Pages 363-368
The molar fraction solubilities of radon χ1 to 1, 2-dimethylbenzene, 1, 3-dimethylbenzene, 1, 4dimethylbenzene, 1, 3, 5-trimethylbenzene, 1, 2, 4-trimethylbenzene and 1-isopropyl-4-methylbenzene were determined. A radon solution was put in a closed vessel with air phase. Radon contents in the initial solution and the solution in which gas-liquid equilibrium had achieved, were measured by liquid scintillation counting. Radon content in the gas phase was obtained from the difference of the radon contents in the two solutions. Radon solubility was resulted from the ratio of liquid phase concentration to the gas phase concentration. The solubility formulas as a function of temperature were presented as follows in the range of 290-301 K.
1, 2-Dimethylbenzene:χ1=exp (1575.5/T-8.219),
1, 3-Dimethylbenzene:χ1=exp (1638.4/ T8.389),
1, 4-, Dimethylbenzene:χ1= exp (1627.1/ T8.287),
1, 3, 5-Trimethylbenzene:χ1= exp (1599.1/T-8.218),
1, 2, 4-Trimethylbenzene:χ1= exp (2342.2/ T1 0.717),
1-Isopropyl-4-methylbenzene:χ1=exp (2310.6/ T1 0.412).
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