Soil-plant relationships of radioactive elements.
Soil-plant relationships of radioactive elements.
复制标题
放射性元素的土壤-植物关系。
作者：
R. G. Menzel
各种放射性元素以水溶性形式添加到土壤中后，植物中的浓度可能比土壤中的浓度高或低几个数量级。最容易吸收的那些可溶于土壤或与植物中具有代谢功能的元素同位素。那些吸收最少的物质很难溶解在土壤中。植物受到的伽马辐射剂量主要来自土壤，β辐射剂量也主要来自土壤，但来自可能高度集中在某些植物组织中的少数元素的β辐射除外。植物在土壤中放射性核素移动中的作用很小，除非在很长一段时间内。
The plant concentration of various radioactive elements, after they have been added to soils in water-soluble forms, may be several orders of magnitude higher or lower than the concentration in the soil. Those that are most readily absorbed are soluble in the soil or are isotopic with elements that have metabolic functions in the plant. Those that are least absorbed are quite insoluble in the soil. The gamma radiation doses to plants would come predominantly from the soil, as would the beta radiation doses except for the beta radiation from those few elements which may be highly concentrated in certain plant tissues. The role of plants in movement of radionuclides in soil is minor except over very long periods of time.