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31.
Gas-phase UV photolysis of 131I-labeled CH3I was studied. CH3
131I (228 mg) is completely photolyzed within 5 min under the static conditions at room temperature in an argon atmosphere. The final radioiodine compound formed under these conditions is 131I2. The chemical composition of the final products of CH3I photolysis in air is more complex. Agglomeration corcystallization of the CH3I photolysis products with NH4Cl in the gas phase was studied. The results of this study suggest that the main final product of CH3I photolysis in air is a fine IxOy aerosol. In the presence of NH4Cl, formation of NH4
131I aerosols is possible.__________Translated from Radiokhimiya, Vol. 47, No. 3, 2005, pp. 269–273.Original Russian Text Copyright © 2005 by Kulyukhin, Kulemin, Rumer, Konovalova. 相似文献
32.
Kulyukhin S. A. Kulemin V. V. Rumer I. A. Krapukhin V. B. Konovalova N. A. 《Radiochemistry》2004,46(2):165-167
Sorption of various species of radioactive iodine from aqueous and gas phases on polymeric sorbents Styrosorb and Polysorb-1 was studied. These sorbents do not take up ionic species of radioactive iodine (131I- and 131IO3
-) from aqueous solutions. At the same time, both sorbents take up 131I2 from aqueous solutions at 25°C. At V/m = 500 ml g-
1, the distribution factors K
d are 1350 and 590 ml g-
1 with Styrosorb and Polysorb-1, respectively. These sorbents efficiently recover 131I2 from an air flow at 25°C and flow velocity of 0.33 cm s-
1. The sorption capacity of Styrosorb is approximately four times higher than that of Polysorb-1 and amounts to 97.0 mg of I2 per gram of sorbent. These data are consistent with the specific surface areas of the sorbents. 相似文献