Boundary potential of biocolloids particles: quantitative analyses

There the structure of peripheral area of the colloid particle and, in particular, the particles of a biological origin is analyzedin the article. The expression for the potential function of a particle, which is not identical to the Boltzmann force function, describing potential at a surface in interaction betweena charged particle and an electrolyte, is offered. The expression is based on the analysis of charge-charge (Coulomb) and a charge-dipole interactions of an electrolyte with the charged surface. It is offered to use the Landau parameter (length) characterizing a thermodynamic equilibrium on a particle surface for an assessment of the double electric layer thickness. Two ways of calculation of electrokinetic radius of the colloid particles are offered. Ratios on the basis of a Debye screening distance and, respectively, the concentration of the electrolyte, showing the connection between the surface and the electrokinetic potentials of particles are offered. The calculations showing the relative precision of the various approaches wereperformed.