Institute of Radiation Safety and Ecology, NNC, Kurchatov, Kazakhstan.
Russian Institute of Radiology and Agroecology, Obninsk, Russia.
J Environ Radioact. 2021 Oct;237:106684. doi: 10.1016/j.jenvrad.2021.106684. Epub 2021 Jun 26.
A study to determine Cs, Sr, Am, Pu radionuclides in vegetation cover of the area of craters produced by underground nuclear explosions at the Semipalatinsk test site (STS) is summarised in this paper. Transfer factors (Tf) required for the quantitative description of the radionuclides transition from the soil to aboveground plant parts were found to be highest for sagebrush (Artemisia sublessingiana), Tf values for Sr were gradually decreasing with increasing distance from the dump zone. When arranging the radionuclide transferring factors in descending order, the following sequence was obtained: Sr Tf > Cs Tf > Am Tf > Pu Tf, which is consistent with International data. All Tf derived are much higher than those ones derived earlier for epicenters of aboveground nuclear tests and are closest to values for conventionally "background" areas at the Semipalatinsk test site.
本文总结了一项研究成果，该研究旨在确定塞米巴拉金斯克试验场（STS）地下核爆炸弹坑地区植被覆盖层中的 Cs、Sr、Am 和 Pu 放射性核素。为了定量描述放射性核素从土壤向地上植物部分的迁移，发现灌丛（Artemisia sublessingiana）的转移因子（Tf）最高，Sr 的 Tf 值随离倾倒区距离的增加而逐渐降低。按放射性核素转移因子降序排列，得到以下顺序：Sr Tf > Cs Tf > Am Tf > Pu Tf，这与国际数据一致。所有推导的 Tf 都远高于先前在地面核试验震中推导的 Tf，并且最接近塞米巴拉金斯克试验场常规“背景”地区的值。
