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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Liu, Xiaona Xi, Meizhu Bai, Zhongke Huang, Yizong Jiang, Guangyu Zhao, Zhongqiu |
| Description | Author Affiliation: Zhao Z ( School of Land Science and Technology, China University of Geosciences, Haidian District, Beijing, PR China. zhongqiuzhao@163.com) |
| Abstract | Heavy metals contamination of soil is a widespread global problem. Chelant assisted phytoextraction has been proposed to improve the efficiency of phytoextraction which involves three subsequent levels: transfer of metals from the bulk soil to the root surfaces, uptake into the roots and translocation to the shoots. However, most studies focused on the first level. A hydroponic experiment, which addresses the latter two levels, was conducted to study the effects of EDTA, EDDS and IDSA on the uptake and the distribution of Pb, Zn, Cu and Cd in the apoplast and the symplast of roots of maize (Zea mays, L.). The concentrations of the metals (with exception of Zn) in the shoots were increased significantly by addition of all the chelants. EDTA was most effective for Pb uptake and IDSA was interestingly most effective for Cd uptake. Pb in the roots with EDTA was mostly distributed in the apoplast, while Zn, especially with IDSA, was mostly located in the symplast. The results indicated that, the capacity of chelant to enhance the nonselective apoplastic transport of metal may be most important for chelant enhanced phytoextraction. |
| ISSN | 03043894 |
| Issue Number | 1-3 |
| Volume Number | 181 |
| e-ISSN | 18733336 |
| Journal | Journal of Hazardous Materials |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-09-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Amino Acids Pharmacology Biodegradation, Environmental Ethylenediamines Metals, Heavy Pharmacokinetics Soil Pollutants Succinates Zea Mays Metabolism Edetic Acid Drug Effects Growth & Development Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Pollution Waste Management and Disposal Health, Toxicology and Mutagenesis Environmental Engineering |
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