Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 23, Pages 11034-11038Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.09.067
Keywords
Cadmium; Dichlorodiphenyltrichloroethane; Phytoremediation; Bioenergy crop; Ricinus communis
Funding
- National High Technology Research and Development Program of China [2009AA06Z316]
- Ministry of Environmental Protection Program of China [2011467057]
- Shanghai Tongji Gao Tingyao Environmental Science & Technology Development Foundation
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Cadmium (Cd) and dichlorodiphenyltrichloroethane (DDT) or its metabolite residues are frequently detected in agricultural soils and food, posing a threat to human health. The objective of this study was to compare the ability of 23 genotypes of Ricinus communis in mobilizing and uptake of Cd and DDTs (p,p'-DDT, o,p'-DDT, p,p'-DDD and p,p'-DDE) in the co-contaminated soil. The plant genotypes varied largely in the uptake and accumulation of DDTs and Cd, with mean concentrations of 0.37, 0.43 and 70.51 for DDTs, and 1.22, 2.27 and 37.63 mg kg(-1) dw for Cd in leaf, stem and root, respectively. The total uptake of DDTs and Cd varied from 83.1 to 267.8 and 66.0 to 155.1 mu g per pot, respectively. These results indicate that R. communis has great potential for removing DDTs and Cd from contaminated soils attributed to its fast growth, high biomass, strong absorption and accumulation for both DDTs and Cd. (C) 2011 Elsevier Ltd. All rights reserved.
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