. "Peka\u0159, Miloslav" . . "2"^^ . "Fyzik\u00E1ln\u00ED a chemick\u00E1 kinetika v huminov\u00FDch disperz\u00EDch"@cs . "humic acids, colloids, kinetics, adsorption, complexation, diffusion"@en . "Physical and Chemical Kinetics in Humic Dispersions" . . "2"^^ . "P(GP104/02/D036)" . . "RIV/00216305:26310/04:PU41128!RIV/2005/GA0/263105/N" . . . "579487" . . . "Physical and Chemical Kinetics in Humic Dispersions"@en . . "RIV/00216305:26310/04:PU41128" . . . . "[C24490A98D47]" . . . "Boston" . "49-49" . "The very high affinity of humic substances is well known. In this study, the interaction of Cu2+ ions with humic solid (HS), sols and gels is studied. In all of these cases, the complexation between metal ions and phenolic or carboxylic groups takes place. According to results of quantum chemistry, these functional groups are the most convenient for binding with transition metals.1 In general, HS are partially soluble in aqueous solutions. In natural systems, reactions of HS with metal ions are proceedding in liquid phase or on liquid/solid interface. In case of solid HS, Langmuir model is frequently used for description of sorption equilibrium. Although experimental data obtained for sorption of Cu2+ ions on solid HS can be fitted relatively precisely by this model, its utilization is connected with some inaccuracies. Above all, the forming of Cu-HS complexes causes the liberation of H+ ions (from phenolic or carboxylic groups), which is not taken into account (consideration?). In addition, Langmuir" . "Boston" . . "Northeastern University" . . "Physical and Chemical Kinetics in Humic Dispersions" . . "Klu\u010D\u00E1kov\u00E1, Martina" . . "1"^^ . "Fyzik\u00E1ln\u00ED a chemick\u00E1 kinetika v huminov\u00FDch disperz\u00EDch"@cs . "Je studov\u00E1na kinetika interakc\u00ED m\u011B\u010Fnat\u00FDch iont\u016F s huminov\u00FDmi kyselinami ve t\u0159ech r\u016Fzn\u00FDch disperzn\u00EDch form\u00E1ch: jako suspenze, sol a gel."@cs . "The very high affinity of humic substances is well known. In this study, the interaction of Cu2+ ions with humic solid (HS), sols and gels is studied. In all of these cases, the complexation between metal ions and phenolic or carboxylic groups takes place. According to results of quantum chemistry, these functional groups are the most convenient for binding with transition metals.1 In general, HS are partially soluble in aqueous solutions. In natural systems, reactions of HS with metal ions are proceedding in liquid phase or on liquid/solid interface. In case of solid HS, Langmuir model is frequently used for description of sorption equilibrium. Although experimental data obtained for sorption of Cu2+ ions on solid HS can be fitted relatively precisely by this model, its utilization is connected with some inaccuracies. Above all, the forming of Cu-HS complexes causes the liberation of H+ ions (from phenolic or carboxylic groups), which is not taken into account (consideration?). In addition, Langmuir"@en . "2004-03-17+01:00"^^ . "Physical and Chemical Kinetics in Humic Dispersions"@en . "26310" . . . "Humic Substances Seminar VII" .