低放核素污染土-水介质的植物修复研究进展

植物修复技术是利用植物根系吸收水分和养分的过程来吸收和转化土壤和水体中的污染物,以期达到清除,修复和治理的目的,是用于对土壤-水体中重金属和放射性核素污染清除的生态技术.本文就放射性核素的来源、污染现状、植物对放射性核素的积累筛选以及对污染土壤的修复研究进行综述,以明确植物修复技术在改善环境中的作用,为进一步筛选超积累植物并探讨植物对放射性核素污染的修复机理提供参考.

Advances in Researches on the Phytoremediation of Low Level Radionuclide Contaminated Soil

Phytoremediation uses the roots of green plants absorbing water and nourishment to imbibe and transform pollutants of soils and solutions in order to bring the desired result of cleaning up,restorating and treating.It is an ecological technique used to clean polluted soils and solutions by heavy metals and radionuclides.We reviewed the sources of radionuclides,pollution actuality,condiating and selecting of plant for radionuclides,in order to understand that functions of phytoremediation in improving the environment.We have also supplied references for selecting hyperaccumulator and discussing restoration mechanism for radionuclides.