食品, 水, ヒト歯中のラジウム-226, 鉛-210およびポロニウム-210

概要

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Radium-226, lead-210, and/or polonium-210 were measured in food, water and human teeth sampled in Misasa, Togo, Akasaki and Tohaku of Tottori Prefecture which faces the Japan Sea on the north. Studies in Okayama served as control.There were significant differences between radium-226 in several kinds of food and human teeth between these two locations. There was also a significant difference between lead-210 in human teeth. There were no significant differences between radium-226 and polonium-210 in the samples of water.From these results as well as those from authors abroad, it is assumed that Tottori Prefecture has a relatively high area of naturally occurring radium-226 and lead-210, whereas Okayama is more or less average.The skeletal burden of a standard man for radium-226 and lead-210 was calculated from teeth measurements. The burden for radium-226 was 770, 1057 and 154 pCi in Misasa, Akasaki and Tohaku, and Okayama, respectively, and that for lead-210, 448, 420 and 231 pCi, respectively.
日本衛生学会の論文