摘要
本文探讨了废水中铀钍镭在花生及稻谷中的吸收转移规律。结果表明，当土壤中镭－２２６的含量达到１０￣３Ｂｑ／ｋｇ数量级时，花生及稻谷中镭－２２６的含量已超过限制标准。与废气、固体废渣相比，废水中的放射性核素更易于污染农作物。
he rule of transference and accumulation of na-tural radionuclides U, Th and 226￣Ra in soil, peanut andrice which were irrigated with radioactive waste waterfrom a neighbouring factory was described. The re-sults showed that the accumulations of U, Th and 226￣Ra in peanut and rice were increased with the increaseof the concentration of U, Th and 226￣Ra in soil respec-tively, but the transference coefficients tended to bedecreased. When the concentration of 226￣Ra in the soilreached 103 Bq·kg-1, the concentration of 226￣Ra inpeanut and rice would exceed the permissible stan-dard. Compared to gaseous and solid wastes, the ra-dionuclides in waste water seemed to be easier tocause crops' contamination.
出处
《职业医学》
1996年第3期10-12,共3页
China Occupational Medicine
关键词
放射性废水
转移系数
花生
稻谷
铀
钍
镭
radioactive waste water, transfer co-efficient, peanut, rice
