Effective migration velocity of Cs-137 and Sr-90 as a function of the type of soils in Belarus
Effective migration velocity of Cs-137 and Sr-90 as a function of the type of soils in Belarus
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DOI：
10.1016/0265-931x(96)00013-6
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发表时间：
1997-01-01
影响因子：
2.3
通讯作者：
Ivanova, T
中科院分区：
文献类型：
--
作者：
Arapis, G;Petrayev, E;Ivanova, T
本文研究了Cs-137和Sr-90在白俄罗斯戈梅利州Khoiniki地区典型土壤中的有效迁移速率。在大多数土壤中，Sr-90的迁移速率似乎高于Cs-137，分别为0.71 ~ 1.54cm/年和0.39 ~ 1.16cm/年。在某些土壤类型中，两种放射性核素的速度相同，约为1厘米/年。事故发生七年后，残留放射性核素的主要部分位于土壤上部10厘米处。在50-70厘米的深度，放射性核素的数量非常小。放射性核素的垂直迁移作为土壤类型的函数所获得的结果，在放射生态图的形式为整个污染区域的Khoiniki。版权所有（C）1996爱思唯尔科学有限公司
The effective migration velocities of Cs-137 and Sr-90 in typical soils of the Khoiniki district, Gomel region, Belarus, were evaluated, In most of these soils, the migration rate of Sr-90 seems higher than that of Cs-137 and ranges from 0.71 to 1.54 cm/year and 0.39 to 1.16 cm/year, respectively. In some soil types both radionuclides have the same speed approximately 1 cm/year. Seven years after the accident the main part of the residual radionuclides is located in the upper 10 cm of soils. At a depth of 50-70 cm the quantity of radionuclides is very small. The obtained results on vertical migration of the radionuclides as a function of the soil type are presented in the form of a radioecological map for the whole contaminated region of Khoiniki. Copyright (C) 1996 Elsevier Science Limited