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dc.contributor.authorVerbruggen EMJ
dc.contributor.authorStruijs J
dc.date.accessioned2013-04-15T14:21:42
dc.date.issued1993-01-31
dc.identifier719101008
dc.description.abstractThe Dutch government has to judge new announced chemicals on certain criterions like sorption within according to the Law on Environmentally dangerous Compounds. For surfactants, to which the dyes belong, existing methodologies turned out to be insufficient for assessing of Kp. In this report the relationship between sorption and experimentally determined or calculated properties or structure parameters of compounds was analysed for 16 dyes. For these analysed dyes there appeared to be no relationship between Kp and the surface tension of buffered solutions. The CMC could not be determined for these dyes. The first order connectivity index of the dyes and the Koc based on this parameter were calculated with use of a QSAR-program. There appeared to be no relationship between these parameters and Kp. Kow also was calculated with a QSAR-program. For this there appeared to be a relationship with Kp. The experimentally determined solubility appeared to correlate significantly as well. It is possible to draft a PAR or QSAR founded on these relationships. It should be noticed that the impurities of the dyes lead to some uncertainty in these relationships. Probably not accumulation on a surface but hydrophobic sorption is the mean sorption mechanism for dyes. Sorption appeared to be not linear for the observed range of concentrations (10-4 - 10-6 M).<br>
dc.description.sponsorshipDGM/SVS
dc.format.extent55 p
dc.language.isonl
dc.publisherRijksinstituut voor Volksgezondheid en Milieu RIVM
dc.relation.ispartofRIVM Rapport 719101008
dc.relation.urlhttp://www.rivm.nl/bibliotheek/rapporten/719101008.html
dc.subject12nl
dc.subjectkleurstofnl
dc.subjectactief slibnl
dc.subjectsedimentnl
dc.subjectsorptienl
dc.subjectoplosbaarheidnl
dc.subjectfysische eigenschappennl
dc.subjectchemische eigenschappennl
dc.subjectdyesen
dc.subjectactivated sludgeen
dc.subjectsedimenten
dc.subjectsorptionen
dc.subjectsolubilityen
dc.subjectphysical propertiesen
dc.subjectchemical propertiesen
dc.subjectqsaren
dc.subjectpartitiecoefficienten
dc.subjectwateroplosbaarheiden
dc.subjectkow;en
dc.titleSorptie van kleurstoffen aan slibdeeltjes: invloed van fysisch-chemische eigenschappennl
dc.title.alternative[Sorption of dye stuffs on sludge solids: the influence of physico-chemical properties.]en
dc.typeReport
dc.date.updated2013-04-15T12:21:45Z
html.description.abstractThe Dutch government has to judge new announced chemicals on certain criterions like sorption within according to the Law on Environmentally dangerous Compounds. For surfactants, to which the dyes belong, existing methodologies turned out to be insufficient for assessing of Kp. In this report the relationship between sorption and experimentally determined or calculated properties or structure parameters of compounds was analysed for 16 dyes. For these analysed dyes there appeared to be no relationship between Kp and the surface tension of buffered solutions. The CMC could not be determined for these dyes. The first order connectivity index of the dyes and the Koc based on this parameter were calculated with use of a QSAR-program. There appeared to be no relationship between these parameters and Kp. Kow also was calculated with a QSAR-program. For this there appeared to be a relationship with Kp. The experimentally determined solubility appeared to correlate significantly as well. It is possible to draft a PAR or QSAR founded on these relationships. It should be noticed that the impurities of the dyes lead to some uncertainty in these relationships. Probably not accumulation on a surface but hydrophobic sorption is the mean sorption mechanism for dyes. Sorption appeared to be not linear for the observed range of concentrations (10-4 - 10-6 M).&lt;br&gt;


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