文献类型： 外文期刊
作者： Wan, Shuming 1 ; Pang, Jun 3 ; Li, Yiwei 4 ; Li, Yanping 4 ; Zhu, Jia 1 ; Wang, Jinsheng 5 ; Chang, Ming 4 ; Wang, Lei 1 ;
作者机构： 1.Shenzhen Polytech, Sch Construct & Environm Engn, Shenzhen 518055, Peoples R China
2.Heilongjiang Acad Agr Sci, Heilongjiang Acad Black Soil Conservat & Utilizat, Harbin 150086, Peoples R China
3.Shandong Agr Univ, Coll Arts, Tai An 271018, Shandong, Peoples R China
4.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
5.Guilin Univ Technol, Guangxi Key Lab Theory & Technol Environm Pollut, Guilin 541004, Peoples R China
6.Shenzhen BeiYu Environm Technol Co Ltd, Shenzhen 518063, Peoples R China
关键词： heavy metal; phytoremediation; Iris sibirica L; hyperaccumulator; phytoextraction
期刊名称：SUSTAINABILITY （ 影响因子：3.251； 五年影响因子：3.473 ）
ISSN：
年卷期： 2021 年 13 卷 16 期
页码：
收录情况： SCI
摘要： Heavy metal pollution in mine wastelands is quite severe. Iris sibirica L., an emergent wetland plant, is characterized by an ability to survive under high stress of heavy metals. This study aimed to explore the phytoremediation ability of nickel (Ni), cobalt (Co), and lead (Pb) by Iris sibirica L. under hydroponic conditions. A series of tests were conducted at different metal stress conditions to evaluate the phytoextraction and tolerance of Iris sibirica L. The concentrations of Ni, Co, and Pb in plant shoots reached their highest values in 500 mg L-1 treatments, where they were 6.55%, 23.64%, and 79.24% higher than those in 300 mg L-1, respectively. The same concentrations in roots also reached their peak in 500 mg L-1 treatments, where they were 5.52%, 33.02%, and 70.15% higher than those in 300 mg L-1, respectively. Bioconcentration factors (BCF) for Ni, Co, and Pb revealed the phytoextraction ability of Iris sibirica L., and the translocation factors (TCF) showed that Ni may be most easily translocated in the plant, followed by Co and Pb. This study indicates that, compared with Ni and Co, Iris sibirica L. is more suitable for the phytoremediation of Pb-contaminated metal mine wastelands.
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