Fig. 5.2.

The concentrations vs. radial distance to the charged surface for System I with the surface charge density σ = −0.012 e/Ų. The four curves with indicated symbols are the counterion concentration profiles. The four coion concentration profiles nearly overlap and become one curve which is the lowest curve. Inset: the graph of function ${\epsilon }_i\left(\stackrel{‒}{c}\left(r\right)\right)$ for i = 1, … , 4.