贵州省食品中铀、钍含量及所致人体内照射剂量

The Uranium and Thorium Content of Foodstuffs in Guizhou Province and Studies on its Radiation Dosage to the Human Body

本文报道了贵州省城乡居民膳食组成中主要食品(包括水)天然放射性核素铀、钍的含量,估算了贵州省城乡居民对上述核素的年摄入量和待积有效剂量当量,结果表明贵州省城乡居民待积有效剂量当量分别为0.73×10^(-5)SV和1.07×10^(-5)SV,食品中^(232)钍的剂量贡献大于^(238+234)铀。

The Present article reports the uranium and thorium content of nataral radiation nuclein in the main foodstuffs in cluding water for the city and country dwellers in Guizhou Province.It also cstimates the armual absorbcd amount and the effective dosose equtvalent of the mentioned unclein for the city and country dwellers. As a result,the effective equivalent amounts to 0.73×10^(-5) Sv and 1.06×10^(-5) Sv respectively absorbed by a city and country dweller, above all, in the foodsfuffs, the dosase of 232 thorium is bigger than that of 236+234 uranium.