Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/2556
Title: | Enhanced phytoextraction of Pb and other metals from artificially contaminated soils through the combined application of EDTA and EDDS | Authors: | Luo, C Shen, Z Li, X Baker, AJM |
Issue Date: | Jun-2006 | Source: | Chemosphere, June 2006, v. 63, no. 10, p. 1773-1784 | Abstract: | Chemically enhanced phytoextraction is achieved by the application of chelates to soils. Using pot experiments, the effect of the combined application of EDTA and EDDS on the uptake of Cu, Pb, Zn and Cd by Zea mays L. was studied. Among the tested application ratios of 1:1, 1:2, and 2:1 (EDTA/EDDS), 2:1 of EDTA:EDDS was the most efficient ratio for increasing the concentrations of Cu, Pb, Zn and Cd in the shoots. The combined application of 3.33 mmol kg⁻1 soil of EDTA + 1.67 mmol kg⁻1 soil of EDDS produced 650 mg kg⁻1 of Pb in the shoots, which was 2.4 and 5.9 times the concentration of Pb in the shoots treated with 5 mmol kg⁻1 of EDTA and EDDS alone, respectively. The total phytoextraction of Pb reached 1710 µg kg⁻1 soil, which was 2.1 and 6.1 times the total Pb from 5 mmol kg⁻1 EDTA and EDDS alone, respectively. The combined application of EDTA and EDDS also significantly increased the translocation of Pb from the roots to the shoots. The mechanism of enhancing the phytoextraction of Pb by the combined application of EDTA + EDDS did not involve a change in the pH of the soil. The increase in the phytoextraction of Pb by the shoots of Z. mays L. was more pronounced than the increase of Pb in the soil solution with the combined application of EDTA and EDDS. It was thought that the major role of EDDS might be to increase the uptake and translocation of Pb from the roots to the shoots of plants. | Keywords: | Phytoextraction EDTA EDDS Combined application Pb Cu Zn Cd Zea mays L. |
Publisher: | Pergamon Press | Journal: | Chemosphere | ISSN: | 0045-6535 | EISSN: | 1879-1298 | DOI: | 10.1016/j.chemosphere.2005.09.050 | Rights: | Chemosphere © 2005 Elsevier. The journal web site is located at http://www.sciencedirect.com. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
B18 Chemosphere 2006.pdf | Pre-published version | 172.74 kB | Adobe PDF | View/Open |
Page views
133
Last Week
0
0
Last month
Citations as of Apr 21, 2024
Downloads
365
Citations as of Apr 21, 2024
SCOPUSTM
Citations
107
Last Week
0
0
Last month
1
1
Citations as of Apr 4, 2024
WEB OF SCIENCETM
Citations
91
Last Week
0
0
Last month
1
1
Citations as of Apr 25, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.