Trends in phytoremediation of radionuclides
Trends in phytoremediation of radionuclides
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DOI：
10.1023/a:1022527207359
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发表时间：
2003-02
期刊：
影响因子：
4.9
通讯作者：
S. Dushenkov
中科院分区：
文献类型：
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作者：
S. Dushenkov
植物修复是一种新型的植物修复技术，在世界范围内广泛应用于放射性污染场地。植物修复是指利用绿色植物去除环境中的污染物或使其无害化。讨论了放射性核素植物修复的几个子集的现状：（a）植物提取法，即利用高生物量放射性核素积累植物和适当的土壤改良剂，将放射性核素从土壤中转移和浓缩到地上的嫩枝中，这些嫩枝用传统的农业方法收获，（B）根过滤法，即利用植物的根沉淀和浓缩污染流出物中的放射性核素，（c）植物挥发，即植物从土壤中提取挥发性放射性核素并使其从树叶中挥发;（d）植物稳定，即植物稳定土壤中的放射性核素，从而使其无害。植物修复是一个快速发展的领域，放射性核素的植物修复可能很快成为环境管理和风险降低过程中不可分割的一部分。
Phytoremediation, a novel plant-based remediation technology, is applied to a variety of radionuclide-contaminated sites all over the world. Phytoremediation is defined as the use of green plants to remove pollutants from the environment or to render them harmless. Current status of several subsets of phytoremediation of radionuclides is discussed: (a) phytoextraction, in which high biomass radionuclide-accumulating plants and appropriate soil amendments are used to transport and concentrate radionuclides from the soil into the above-ground shoots, which are harvested with conventional agricultural methods, (b) rhizofiltration, in which plant roots are used to precipitate and concentrate radionuclides from polluted effluents, (c) phytovolatilization, in which plants extract volatile radionuclides from soil and volatilize them from the foliage and (d) phytostabilization, in which plants stabilize radionuclides in soils, thus rendering them harmless. It is shown that phytoremediation is a fast developing field and the phytoremediation of radionuclides might soon become an integral part of the environment management and risk reduction process.