Abstract
Polychlorodibenzo-dioxins (PCDD) and polychlorodibenzofurans (PCDFs) called "Dioxins" are persistent and toxic pollutants. We have investigated the applications of dehalogenation reactions with sodium hydroxide in 1,3-dimethy1-2-imidazolidinone (DMI), high polar and aprotic solvent, to the soil polluted with PCDDs and PCDFs. Aqueous solvent A has as high extraction capability of PCDDs and PCDFs from soil as toluene. Extracted PCDDs and PCDFs, which were treated in NaOH/DMI reagent at 200℃ for 1hr, were destructed and were not detected in reagent.
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