EPR characterization of carbonate ion effect on TCE and PCE decomposition by gamma-rays

J. H. Yoon, J. Jung, H. H. Chung, M. J. Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Carbonate ions significantly inhibit the decomposition of TCE (trichloroethylene) and PCE (perchloroethylene) by gamma-rays. The inhibition effect is larger in the case of TCE than PCE due to a greater dependence of TCE decomposition on hydroxyl radicals. The inhibition effect of carbonate ions was characterized by an EPR/spin-trapping technique. The intensity of DMPO-OH adduct signal decreased as the carbonate ion concentration increased and the percent of signal reduction was linearly proportional to the logarithm of carbonate ion concentration. This directly proves that the carbonate ions inhibit the decomposition of TCE and PCE by scavenging hydroxyl radicals.

Original languageEnglish
Pages (from-to)217-219
Number of pages3
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume253
Issue number2
DOIs
Publication statusPublished - 2002

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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