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Enhanced phytoextraction of Cu, Pb, Zn and Cd with EDTA and EDDS.
Chemosphere. 2005 Mar; 59(1):1-11.C

Abstract

Chemically enhanced phytoextraction has been proposed as an effective approach to removing heavy metals from contaminated soil through the use of high biomass plants. Using pot experiments, the effects of the application of EDTA, EDDS and citric acid on the uptake of Cu, Pb, Zn and Cd by corn (Zea mays L. cv. Nongda 108) and bean (Phaseolus vulgaris L. white bean) plants were studied. The results showed that EDDS was more effective than EDTA at increasing the concentration of Cu in corn and beans. The application of 5 mmol kg-1 soil EDDS to soil significantly increased concentrations of Cu in shoots, with maximum levels of 2060 and 5130 mg kg-1 DW in corn and beans, respectively, which were 45- and 135-fold higher than that in the corresponding control plants to which chelate had not been applied. Concentrations of Zn in shoots were also higher in the plants treated with EDDS than in those treated with EDTA. For Pb and Cd, EDDS was less effective than EDTA. The maximum Cu phytoextraction was found with the EDDS treatment. The application of EDTA and EDDS also significantly increased the shoot-to-root ratios of the concentrations of Cu, Pb, Zn and Cd in both plant species. The results of metal extraction with chelates showed that EDDS was more efficient at solubilizing Cu and Zn than EDTA, and that EDTA was better at solubilizing Pb and Cd than EDDS.

Authors+Show Affiliations

Luo C
Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
Shen Z
No affiliation info available
Li X
No affiliation info available

MeSH

AdsorptionBiodegradation, EnvironmentalChelating AgentsEdetic AcidEnvironmental PollutionEthylenediaminesHong KongMetals, HeavyPhaseolusPlant StructuresSoil PollutantsSpectrophotometry, AtomicSuccinatesZea mays

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15698638

Citation

Luo, Chunling, et al. "Enhanced Phytoextraction of Cu, Pb, Zn and Cd With EDTA and EDDS." Chemosphere, vol. 59, no. 1, 2005, pp. 1-11.
Luo C, Shen Z, Li X. Enhanced phytoextraction of Cu, Pb, Zn and Cd with EDTA and EDDS. Chemosphere. 2005;59(1):1-11.
Luo, C., Shen, Z., & Li, X. (2005). Enhanced phytoextraction of Cu, Pb, Zn and Cd with EDTA and EDDS. Chemosphere, 59(1), 1-11.
Luo C, Shen Z, Li X. Enhanced Phytoextraction of Cu, Pb, Zn and Cd With EDTA and EDDS. Chemosphere. 2005;59(1):1-11. PubMed PMID: 15698638.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Enhanced phytoextraction of Cu, Pb, Zn and Cd with EDTA and EDDS. AU - Luo,Chunling, AU - Shen,Zhenguo, AU - Li,Xiangdong, PY - 2004/07/05/received PY - 2004/09/24/revised PY - 2004/09/30/accepted PY - 2005/2/9/pubmed PY - 2005/5/3/medline PY - 2005/2/9/entrez SP - 1 EP - 11 JF - Chemosphere JO - Chemosphere VL - 59 IS - 1 N2 - Chemically enhanced phytoextraction has been proposed as an effective approach to removing heavy metals from contaminated soil through the use of high biomass plants. Using pot experiments, the effects of the application of EDTA, EDDS and citric acid on the uptake of Cu, Pb, Zn and Cd by corn (Zea mays L. cv. Nongda 108) and bean (Phaseolus vulgaris L. white bean) plants were studied. The results showed that EDDS was more effective than EDTA at increasing the concentration of Cu in corn and beans. The application of 5 mmol kg-1 soil EDDS to soil significantly increased concentrations of Cu in shoots, with maximum levels of 2060 and 5130 mg kg-1 DW in corn and beans, respectively, which were 45- and 135-fold higher than that in the corresponding control plants to which chelate had not been applied. Concentrations of Zn in shoots were also higher in the plants treated with EDDS than in those treated with EDTA. For Pb and Cd, EDDS was less effective than EDTA. The maximum Cu phytoextraction was found with the EDDS treatment. The application of EDTA and EDDS also significantly increased the shoot-to-root ratios of the concentrations of Cu, Pb, Zn and Cd in both plant species. The results of metal extraction with chelates showed that EDDS was more efficient at solubilizing Cu and Zn than EDTA, and that EDTA was better at solubilizing Pb and Cd than EDDS. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/15698638/Enhanced_phytoextraction_of_Cu_Pb_Zn_and_Cd_with_EDTA_and_EDDS_ DB - PRIME DP - Unbound Medicine ER -