Critical Potential in the Coagulation of Colloids by Electrolytes

Effects of Electrolytes in Hydrophobic Systems. I. Electric Mobility and Stability.

“…Mukherjee, Roychoudhury, and Rajkumar (18) found that the mobility decreased at low concentrations and then increased without falling off at the highest concentration. It was on the basis of these behaviors that Mukherjee (17) rejected the whole concept of critical mobility. 10.…”

The The Concept of Critical Zeta Potential for Hydrophobic Sols. I.

“…Kruyt and coworkers (10, 11) postulate a decrease in dielectric constant to account for the lower critical mobility and the corresponding higher critical ¿"-potential for salts of the potassium chloride type. Mukherjee and coworkers (14) and Ghosh (6) believe that a decrease in dielectric constant alone would not account for the observed results, and suggest that the anomalous behavior is due in part to the stabilizing action of the adsorbed chloride which opposes the precipitating action of the potassium ion.…”