gamma.-Ray Destruction of Individual PCB Congeners in Neutral 2-propanol

Radiolysis offers an attractive method of degrading PCBs, and the dechlorination mechanism has been found to depend on the nature of the solvent system employed. The gamma -ray degradation of 25 PCB congeners, representative of Aroclor mixtures, was investigated in neutral 2-propanol using spent nuc...

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Bibliographic Details
Published inEnvironmental science & technology Vol. 28; no. 12; pp. 2191 - 2196
Main Authors Arbon, Rod E, Mincher, Bruce J, Knighton, Walter B
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 01.11.1994
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Summary:Radiolysis offers an attractive method of degrading PCBs, and the dechlorination mechanism has been found to depend on the nature of the solvent system employed. The gamma -ray degradation of 25 PCB congeners, representative of Aroclor mixtures, was investigated in neutral 2-propanol using spent nuclear fuel. Results indicated that, when the radiolytic degradation efficiency was plotted against the PCB chlorine number, a general increase in the degradation efficiency was observed as the number of Cl atoms increased. Those PCB compounds found to have the largest radiolytic degradation efficiencies for their respective homologs were para/meta-substituted only. Chlorine substitution in the ortho position decreased the degradation efficiency.
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ISSN:0013-936X
1520-5851
DOI:10.1021/es00061a030