期刊
ENVIRONMENTAL POLLUTION
卷 144, 期 1, 页码 11-18出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2006.01.016
关键词
Sesbania drummondii; Pb-remediation; chelators; Ph accumulation
Effects of lead (Pb) and chelators, such as EDTA, HEDTA, DTPA, NTA and citric acid, were studied to evaluate the growth potential of Sesbania drummondii in soils contaminated with high concentrations of Ph. S. drummondii seedlings were grown in soil containing 7.5 g Pb(NO3)(2) and 0-10 mmol chelators/kg soil for a period of 2 and 4 weeks and assessed for growth profile (length of root and shoot), chlorophyll a fluorescence kinetics (F-v/F-m and F-v/F-o) and Ph accumulations in root and shoot. Growth of plants in the presence of Ph + chelators was significantly higher (P < 0.05) than the controls grown in the presence of Pb alone. F-v/F-m and F-v/F-o values of treated seedlings remained unaffected, indicating normal photosynthetic efficiency and strength of plants in the presence of chelators. On application of chelators, while root uptake of Ph increased four-five folds, shoot accumulations increased up to 40-folds as compared to controls (Pb only) depending on the type of chelator used. Shoot accumulations of Pb varied from 0.1 to 0.42% (dry weight) depending on the concentration of chelators used. (c) 2006 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据