Degradation of the herbicide dicamba under strictly anaerobic conditions

J. Gu, S. Cheng, J. Gu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Degradation of the herbicide dicamba was assayed under methane-producing condition using a coastal wetland soil as an inoculum. Benzene ring 14C labeled dicamba was employed and degradative process proceeds through demethoxylation yielding 3,6-dichlorosalicylic acid as the predominant intermediate. The data showed that the degradation rate of dicamba by the enrichment culture achieved 64 %, 91 % and 95% after 7, 16 and 27 days of incubation, respectively; only small quantities of CO2 (0.74%) and CH4 (0.11%) were recovered with insignificant radioactivity. The benzene ring of dicamba was not cleavaged to a significant extent. Future cleaning up of dicamba contaminated environment may require an effective bioremediation techniques.

Original languageEnglish
Pages (from-to)111-113
Number of pages3
JournalHuanjing Kexue/Environmental Science
Volume22
Issue number4
StatePublished - 2001
Externally publishedYes

Keywords

  • Anaerobic degradation
  • Bioremediation
  • Dicamba
  • Herbicide
  • Metabolism

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