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 journalArticlepeer-review

    12 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

    Bibliographical note

    Funding Information:
    The Nuclear R & D program of MOST, Korea has funded this work.

    Copyright:
    Copyright 2008 Elsevier B.V., All rights reserved.

    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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