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dc.contributor.authorde Beer KGM
dc.contributor.authorPeijnenburg WJGM
dc.contributor.authorVerboom JH
dc.date.accessioned2013-06-13T21:26:46
dc.date.issued1992-11-30
dc.identifier719101007
dc.description.abstractA 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>
dc.description.sponsorshipDGM/SVS
dc.format.extent56 p
dc.language.isonl
dc.publisherRijksinstituut voor Volksgezondheid en Milieu RIVM
dc.relation.ispartofRIVM Rapport 719101007
dc.relation.urlhttp://www.rivm.nl/bibliotheek/rapporten/719101007.html
dc.subject07nl
dc.subjectfotochemische reactiesnl
dc.subjectsnelheidnl
dc.subjectchloorbenzenennl
dc.subject92-4nl
dc.subjectdirect photolysisnl
dc.subjecthalogenated compoundsnl
dc.subjecttransformationnl
dc.subjectdirecte fotolysenl
dc.subjectgehalogeneerde verbindingennl
dc.subjectqsarnl
dc.subjecttransformatie;nl
dc.subjectphotochemical reactionsen
dc.subjectvelocityen
dc.subjectchlorobenzenesen
dc.titleReductieve dehalogenering van heterocyclische verbindingen, relatie tussen structuur en omzettingssnelheidnl
dc.title.alternativeReductive dehalogenation of heterocyclic compounds, relationship between chemical structure and rate of transformationen
dc.typeReport
dc.date.updated2013-06-13T19:26:48Z
html.description.abstractA 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.&lt;br&gt;


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