Bioaccumulation of heavy metals by Phragmites australis cultivated in synthesized substrates

作     者：WANG He JIA Yongfeng 

作者机构：Liaoning Province Key Laboratory of Basin Pollution Control Liaoning Academy of Environmental Sciences Shengyang 110031 China. Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China. 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2009年第21卷第10期

页      面：1409-1414页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 07[理学] 08[工学] 0828[工学-农业工程] 120405[管理学-土地资源管理] 

基　　金：supported by the National Natural Sci-ence Foundation of China (No 40773076) the Ministry of Science and Technology of China through the National Basic Research Program of China (No 2009CB426301) 

主　　题：heavy metals bioaccumulation metal oxides adsorption 

摘      要：Accumulation of heavy metals from various oxides with adsorbed cadmium by wetland plant Phragmites australis was studied to evaluate the fate of heavy metals in the sediment of constructed wetlands. Hoagland solution was used as nutrition supply, and single metal oxide with adsorbed cadmium was applied as contaminant to study the accumulation characteristics of cadmium and the substrate metals by P. australis. After 45-d treatment, the bioaccumulation degree in root followed the order： Al（OH）3 〉 Al2O3 〉 Fe3O4 〉 MnO2 〉 FeOOH. Heavy metals absorbed by P. australis were largely immobilized by the roots with little translocation to aboveground parts.