Uranium series radionuclides in surface waters from the Shu river (Kazakhstan).
Uranium series radionuclides in surface waters from the Shu river (Kazakhstan).
复制标题
舒河（哈萨克斯坦）地表水中的铀系列放射性核素。
DOI：
10.1039/c2em11014h
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
L. León Vintró
中科院分区：
文献类型：
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作者：
M. Burkitbayev;B. Uralbekov;Sholpan Nazarkulova;I. Matveyeva;L. León Vintró
在哈萨克斯坦和吉尔吉斯斯坦边境的舒河沿岸收集的地表水中测定了 (238)U、(234)U、(226)Ra、(210)Po 和 (210)Pb 的浓度。在研究区域，这条河流经世界上一些最大的铀矿床，这些铀矿床在前苏联的核武器和核能计划期间得到了积极的开采。数据显示，从托克马克市到舒市的河流下游铀浓度呈增加趋势，总铀浓度与总溶解固体之间具有良好的相关性。铀同位素不平衡数据显示，卡拉苏市下游蜀河中存在技术性铀输入，测得的 (234)U/(238)U 同位素比值从未污染地点的 1.63 下降到受过去采矿活动影响的地点的 1.29，证明了这一点。
The concentrations of (238)U, (234)U, (226)Ra, (210)Po and (210)Pb have been determined in surface waters collected along the course of the Shu River, lying on the border between Kazakhstan and Kyrgyzstan. In the study area, the river runs through some of the largest uranium deposits worldwide, which were actively exploited during the nuclear weapons and nuclear energy programmes of the former Soviet Union. The data show an increasing trend in uranium concentrations downstream the river from the city of Tokmak to the city of Shu, with good correlation between total uranium concentrations and total dissolved solids. Data on uranium isotopes disequilibrium show the presence of technogenic uranium inputs into the Shu River downstream from the city of Karasu, evidenced by a decrease in the measured (234)U/(238)U isotopic ratio from 1.63 in uncontaminated sites to 1.29 in sites affected by past mining activities.