title: Simultaneous enhanced removal of Cu, PCBs, and PBDEs by corn from e-waste-contaminated soil using the biodegradable chelant EDDS.
abstract: 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.
authors.affiliation: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.|Graduate University of Chinese Academy of Sciences, Beijing, 100039, China.
authors.forename: Shaorui
authors.initials: S
authors.lastname: Wang
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
authors.forename: Wenrui
authors.initials: W
authors.lastname: Lei
authors.affiliation: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.|Graduate University of Chinese Academy of Sciences, Beijing, 100039, China.
authors.forename: Yingtao
authors.initials: Y
authors.lastname: Sun
authors.affiliation: School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
authors.forename: Yujie
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China. clluo@gig.ac.cn.
authors.forename: Chunling
authors.initials: C
authors.lastname: Luo
authors.affiliation: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.
authors.forename: Gan
authors.initials: G
authors.lastname: Zhang
mesh_terms: D001673:Biodegradation, Environmental; D003300:Copper / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D059029:Electronic Waste / Q000032:analysis*; D052918:Environmental Restoration and Remediation / Q000379:methods; D005029:Ethylenediamines / Q000737:chemistry; D011075:Polybrominated Biphenyls / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D012989:Soil Pollutants / Q000032:analysis; D003313:Zea mays / Q000737:chemistry*
chemical_list: D005029:Ethylenediamines; D011075:Polybrominated Biphenyls; D012989:Soil Pollutants; C031234:ethylenediamine; D003300:Copper; D011078:Polychlorinated Biphenyls
keywords: Bioavailability; Biodegradable chelant; Copper; DOC; POPs