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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Concentration of radionuclides in uranium tailings and its uptake by plants at Jaduguda, Jharkhand, India
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Concentration of radionuclides in uranium tailings and its uptake by plants at Jaduguda, Jharkhand, India

机译：印度贾坎德邦贾杜古达的铀尾矿中放射性核素的浓度及其对植物的吸收

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摘要

Mining and processing of uranium ore was started in several parts of eastern Singhbhum, viz. Jaduguda, Bhatin and Narwapahar (Jharkhand) in 1968. Radioactivity in the mine tailings has to be consolidated so that it does not emanate in the atmosphere or enter the food chain. Hence, the area has been covered with 30 cm thick soil cover followed by development of plant species that do not have any socioeconomic relevance in the area. Seven native plant species of forestry origin, viz. Colebrookea oppositifolia, Dodonaea viscosa, Furcraea foetida, Imperata cylindrica, Jatropha gossypifolia, Pogostemon benghalense and Saccharum spontaneum have been selected for experimental trials. Distribution and concentration of radionuclides have been evaluated in a tailing pond at different depths in soil and tailings. Radionuclide uptake in each of the selected plant species has been evaluated and discussed in this article. The highest concentration of radionuclides has been found in tailings > soil cover on tailings > roots of selected plant species > shoots of all the selected species. These results show that among the seven species tried, J. gossypifolia and F. foetida have the lowest uptake (below detectable limits), while S. spontaneum and P. benghalense have comparatively higher uptake. However, radionuclide concentration in all the tried species is significantly low compared to species of natural occurrence which have higher radionuclides uptake and accumulation.
机译：在比绍的Singhbhum东部的一些地区开始了铀矿石的开采和加工。 Jaduguda，Bhatin和Narwapahar（贾坎德邦）于1968年成立。必须对矿山尾矿中的放射性进行巩固，以使其不会散发到大气中或进入食物链。因此，该地区已被30厘米厚的土壤覆盖，然后发展了该地区没有任何社会经济意义的植物。林业的七个本地植物物种，即。选择了Colebrookea oppositifolia，Dodonaea viscosa，Furcraea foetida，Imperata cylindrica，Jatropha gossypifolia，Bonghalense Pogostemon和Saccharum spontaneum。已在尾矿池中土壤和尾矿中不同深度处评估了放射性核素的分布和浓度。本文对每种选定植物物种中的放射性核素吸收进行了评估和讨论。在尾矿>尾矿中的土壤覆盖>选定植物物种的根>所有选定物种的芽中发现了放射性核素的最高浓度。这些结果表明，在所尝试的7个物种中，棉铃虫和foet foetida的吸收量最低（低于可检测的限度），而自发链球菌和孟加拉假单胞菌的吸收量相对较高。但是，与天然核素具有较高的放射性核素吸收和积累量的物种相比，所有受试物种中的放射性核素浓度都非常低。

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