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论文类型：期刊论文

发表时间：2015-04-09

发表刊物：JOURNAL OF HAZARDOUS MATERIALS

收录刊物：SCIE、EI、PubMed、Scopus

卷号：286

页面范围：379-385

ISSN号：0304-3894

关键字：E-waste; EDDS; PGPB; PCBs; Trace metals

摘要：The present study investigated the effects of the biodegradable chelant S,S-ethylenediaminedisuccinic acid (EDDS) and the plant-growth-promoting bacterium DGS6 on pollutant uptake by corn from e-waste-contaminated soils. The highest concentration and total uptake of Cu and Zn in corn shoots were observed in the presence of EDDS and DGS6+EDDS, respectively. The Sigma PCB concentrations in shoots ranged from 0.53 to 0.72 ng g(-1), and the highest PCB concentration was observed in the presence of EDDS. This could be ascribed to the enhanced dissolved organic carbon, increased dissolution and efficient translocation of PCBs from roots to shoots, as well as potential root damage due to increased soluble metal levels in soil solution. In contrast, the highest total uptake of PCBs in shoots was observed in the presence of DGS6, likely due to enhanced shoot biomass and high levels of air deposition. (C) 2015 Elsevier B.V. All rights reserved.