Some Aspects of the Behaviour of 90Sr in the Environment
Some Aspects of the Behaviour of 90Sr in the Environment
复制标题
90Sr 在环境中的行为的某些方面
DOI：
10.1524/ract.1991.5253.1.237
复制
发表时间：
1991
影响因子：
38.3
通讯作者：
P. Lerch
中科院分区：
文献类型：
--
作者：
C. Friedli;J. Geering;P. Lerch
通过几年来土壤、草和牛奶中锶的表观半衰期的测定，表明切尔诺贝利锶在这些样品中的浓度迅速下降。正如剖面所示，土壤亚层中的迁移肯定是这种消失的主要原因。但草也参与了土壤的净化；的确，草中的9Sr/Ca比相应土壤中的高约4倍。给出了锶迁移率的估计值，并对这一现象进行了解释。
By determining Sr apparent half-lives in soil, grass and milk over several years, it was shown that the concentration of Chernobyl Sr has rapidly decreased in these samples. Migration in the soil sublayers is certainly the major cause of this disappearance, as shown by profiles. But grass is also involved in this soil decontamination; indeed, the 9 Sr/Ca ratio is about 4 times higher in grass than in the corresponding soil. An estimation of the Sr migration rate is given and an explanation of the phenomenon is discussed.