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    Reductieve dehalogenering van heterocyclische verbindingen, relatie tussen structuur en omzettingssnelheid

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    Authors
    de Beer KGM
    Peijnenburg WJGM
    Verboom JH
    Type
    Report
    Language
    nl
    
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    Title
    Reductieve dehalogenering van heterocyclische verbindingen, relatie tussen structuur en omzettingssnelheid
    Translated Title
    Reductive dehalogenation of heterocyclic compounds, relationship between chemical structure and rate of transformation
    Publiekssamenvatting
    A relationship was derived between the structure of halogenated heterocyclic aromatic compounds and their rate of dehalogenation in anaerobic sediment-water mixtures. Of all compounds selected, the pseudo-first order reaction rate constant was determined from the concentration-time profile, as measured with HPLC-UV. For the compounds used, half-lives for reductive dehalogenation vary from 4 up till 78 days. Subsequently, a limited number of physical-chemical parameters, expected to influence rates of transformation of the parent compounds, were selected. Finally, by using linear regression, a quantitative relationship was obtained between the Log of the measured rate constants and several of the physical-chemical parameters selected. The best relation was obtained with the parameters: molecular volume, the Log of the octanol-water-partition coefficient, and the bond strength of the carbon-halogen bond. Further research is necessary to validate and expand the applicability of the relationship obtained.<br>
    Publisher
    Rijksinstituut voor Volksgezondheid en Milieu RIVM
    Sponsors
    DGM/SVS
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