We derive the general expression for diffusiophoretic mobility of a soft particle (i.e., polyelectrolyte-coated hard particle) in concentration gradient electrolytes case which particle’s core size is large enough compared with Debye length. Therefore, surface can be regarded as planar, and electrolyte parallel to surface. The obtained applied arbitrary values fixed charge density polyelectroly...

In mixtures of colloids and nonadsorbing polyelectrolytes, a Donnan potential arises across the region between surfaces that are depleted polyelectrolyte rest system. This tends to shift density profile towards colloidal surface leads local accumulation polyelectrolytes. We derive zero-field theory for disjoining pressure two parallel flat plates. Polyelectrolyte is allowed enter confined inter...

We have studied theoretically the partition equilibrium of a cationic drug between an electrolyte solution and a membrane with pH-dependent fixed charges using an extended Donnan formalism. The aqueous solution within the fixed charge membrane is assumed to be in equilibrium with an external aqueous solution containing six ionic species: the cationic drug (DH(+)), the salt cations (Na(+) and Ca...

The acid-base properties of humic acids (HAs) and fulvic acids (FAs) isolated from liquid swine manure (LSM), soils amended with either 90 or 150 m(3)ha(-1)year(-1) of LSM for 7 years, and the corresponding unamended control soil were investigated by a current potentiometric titration method. The non-ideal competitive adsorption (NICA)-Donnan model for proton binding by two classes of binding s...

Recent theoretical considerations have played an important role in advancing our understanding of the physiological mechanisms responsible for perturbing the plasma water sodium concentration ([Na(+)](pw)) in health and disease. Central to these considerations is the original empirical relationship between the [Na(+)](pw) and total exchangeable sodium (Na(e)), total exchangeable potassium (K(e)...