EDDS and EDTA-enhanced phytoextraction of metals from artificially contaminated soil and residual effects of chelant compounds

Chunling Luo, Zhenguo Shen, Laiqing Lou, Xiangdong Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

128 Citations (Scopus)

Abstract

The potential of 18 different plants to be used in the chemically enhanced phytoextraction of Cu, Pb, Zn and Cd was assessed using pot experiments. Chrysanthemum coronarium L. was the species most sensitive to the application of EDTA, and had the highest enhancement of Cu and Pb concentrations in its shoots. Compared with EDTA, EDDS was more effective in enhancing the concentration of Cu in the shoots of Chrysanthemum coronarium L. and Zea mays L. grown on multi-metal contaminated soils. The EDTA-treated soil still had a significant ability to enhance the concentrations of Cu and Pb in the shoots of Zea mays L. six months after the chelant treatment. However, the EDDS-treated soil did not have any effect in enhancing the concentrations of metals in the shoots of Zea mays L. in the second crop test. The results may indicate that EDDS biodegrades more rapidly than EDTA in soil and is better in limiting potential metal leaching.
Original languageEnglish
Pages (from-to)862-871
Number of pages10
JournalEnvironmental Pollution
Volume144
Issue number3
DOIs
Publication statusPublished - 1 Dec 2006

Keywords

  • Chrysanthemum coronarium L.
  • EDDS
  • EDTA
  • Phytoextraction
  • Residual effects
  • Zea mays L.

ASJC Scopus subject areas

  • Environmental Chemistry
  • Environmental Science(all)
  • Pollution

Cite this