Ministry of Education Key Laboratory of Polluted Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China.
Bioresour Technol. 2011 Dec;102(23):11034-8. doi: 10.1016/j.biortech.2011.09.067. Epub 2011 Sep 20.
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 μg 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.
镉（Cd）和滴滴涕（DDT）或其代谢物残留经常在农业土壤和食物中被检测到，对人类健康构成威胁。本研究的目的是比较 23 种蓖麻基因型在受污染土壤中对 Cd 和 DDTs（p,p'-DDT、o,p'-DDT、p,p'-DDD 和 p,p'-DDE）的迁移和吸收能力。植物基因型在 DDTs 和 Cd 的吸收和积累方面差异很大，叶片、茎和根中 DDTs 的平均浓度分别为 0.37、0.43 和 70.51mgkg(-1) dw，Cd 的平均浓度分别为 1.22、2.27 和 37.63mgkg(-1) dw。DDTs 和 Cd 的总吸收量分别为 83.1 至 267.8 和 66.0 至 155.1μg 每盆。这些结果表明，蓖麻由于其快速生长、高生物量、对 DDTs 和 Cd 的强吸收和积累能力，具有从污染土壤中去除 DDTs 和 Cd 的巨大潜力。
