Determination of radioiodine species in rain water collected at Tsukuba near Tokyo

Abstract

The distribution of radioiodine (131I) species in rain water collected at Tsukuba in May 1986 was studied using the isotopic exchange method. Organic-soluble forms of radioiodine were not observed. Iodide (I*-) was the predominant species, and the concentration of iodate (I*O3-) was less than half of I*-. The results were compared with those for 131I produced by neutron-irradiation of uranyl nitrate. © 1988.