Simultaneous enhanced removal of Cu, PCBs, and PBDEs by corn from e-waste-contaminated soil using the biodegradable chelant EDDS

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• 作者：Shaorui Wang ; Yan Wang ; Wenrui Lei…
• 关键词：Biodegradable chelant ; DOC ; Bioavailability ; POPs ; Copper
• 刊名：Environmental Science and Pollution Research
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：22
• 期：22
• 页码：18203-18210
• 全文大小：437 KB
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• 作者单位：Shaorui Wang (1) (4)
  Yan Wang (2)
  Wenrui Lei (3)
  Yingtao Sun (1) (4)
  Yujie Wang (5)
  Chunling Luo (1)
  Gan Zhang (1)
  
  1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
  4. Graduate University of Chinese Academy of Sciences, Beijing, 100039, China
  2. Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
  3. College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
  5. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Environment
  Atmospheric Protection, Air Quality Control and Air Pollution
  Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  Industrial Pollution Prevention
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1614-7499

文摘

We evaluated the influence of the biodegradable chelant ethylenediamine disuccinic acid (EDDS) on plant uptake of polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and Cu by corn from electronic waste (e-waste)-contaminated soil. The highest concentration and highest total uptake of Cu in corn were observed in the treatment with 5 mM EDDS, which resulted in a 4-fold increase of the Cu translocation factor (C _shoot /C _root ) compared to the control. The concentrations of PCBs and PBDEs in shoots and roots increased with increasing application rates of EDDS, and 1.58- and 1.32-fold average increases in the concentrations of PCBs and PBDEs, respectively, were observed in shoots in the EDDS treatments. A significant positive correlation was observed between shoot Cu and shoot PCBs and PBDEs. We speculate that PCBs and PBDEs were activated by the EDDS-triggered dissolved organic carbon (DOC) and then indiscriminately taken up by roots and translocated to shoots following damage to the roots mainly by the increased extractable Cu resulting from the EDDS application. Keywords Biodegradable chelant DOC Bioavailability POPs Copper