The air dose outside of buildings due to primary and scattered radiation released by atomic bombs in Hiroshima and Nagasaki was estimated as a function of distance from the hypocenter. Neutron dose was estimated from 6oCo activity in iron imbedded in concrete and gamma dose from thermoluminescence in bricks and tiles.The precision (coefficient of variation) of estimation was less than 0.11 for y-rays and less than 0.15 for neutrons. The results as compared with York's values(l) show only a minor difference for y and agree with that for neutrons in Nagasaki, but a large difference of approximately 50 per cent for neutrons and 30-70 per cent for y-rays at distances from 500 to 1500 m from the hypocenter for Hiroshima. Therefore the total air dose was almost equal to York's value in Nagasaki, but less than half in Hiroshima.
"Metal ferrocyanide-anion exchange resin", which is made by precipitating the metal ferrocyanide in an anion exchange resin matrix, has been used for selective adsorption of Cs ion in a variety of aqueous solutions.The " resin " has both properties of metal ferrocyanide and anion exchange resin. Therefore, we tried simultaneous adsorption of radiocesium and radioiodine from water and milk on the "resin".Results showed that "metal ferrocyanide-anion exchange resin" such as Cu, Fe and Ni ferrocyanide can be used for a rapid and simple concentration of radiocesium and radioiodine quantitatively from a large volume of sample solutions. This paper also touches upon the removal of 137 Cs and 131 1 in rain water and milk collected in japan after the Chernobyl accident.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.