Metal leaching along soil profiles after the EDDS application - A field study

Aiguo Wang, Chunling Luo, Renxiu Yang, Yahua Chen, Zhenguo Shen, Xiangdong Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

56 Citations (Scopus)

Abstract

One concern about the chelant-enhanced phytoextraction is the potential metal leaching associated with chelant application. A field study was carried out and the metal leaching along the 60-cm depth soil profiles were evaluated within 36 days after the biodegradable chelant EDDS was applied. Results showed EDDS significantly increased soluble Cu in the top 5 cm soil layer 1 day after the application, and the increase of soluble metals was generally limited in the top 20 cm soil. Metal speciation analysis indicated all Cu and Zn were in forms of Cu-EDDS and Zn-EDDS complexes in soil solution, and Ca was the major competitor with trace metals to EDDS. The soluble metals decreased quickly with time, and no significant difference was observed in the extractable Cu between EDDS treatments and the controls 22 days after the EDDS addition. The potential leaching associated with biodegradable EDDS addition may be controlled under field conditions.
Original languageEnglish
Pages (from-to)204-210
Number of pages7
JournalEnvironmental Pollution
Volume164
DOIs
Publication statusPublished - 1 May 2012

Keywords

  • EDDS
  • Field study
  • Maize
  • Metal leaching
  • Phytoextraction

ASJC Scopus subject areas

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis

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