Site: Home > Home > News and events

Definition and measurement method of ZETA potential

2024-01-09 14:55

ZETA potential refers to the potential of the shear plane, also known as electromotive force or electromotive force( ζ- Potential or ζ- Electric potential is an important indicator of the stability of colloidal dispersion systems.

At present, the main methods for measuring Zeta potential include electrophoresis, electroosmosis, flow potential, and ultrasound, among which electrophoresis is the most widely used.

Due to the surface charge of dispersed particles, they attract surrounding anti ions, which are distributed in a diffusion state at the interface of the two phases, forming a diffusion double layer. According to the Stern double layer theory, the double layer can be divided into two parts, namely the Stern layer and the diffusion layer. The Stern layer is defined as a planar layer composed of an ion (IHP or OHP) charge center adsorbed on the surface of an electrode. The potential of this planar layer relative to a point in the fluid away from the interface is called the Stern potential. The interface between the stationary layer (including the Stern layer and some diffusion layers within the sliding surface sliding plane) and the dispersed medium in the diffusion layer when they move relative to each other is the sliding plane, where the potential at a certain point in the fluid away from the interface is called the Zeta potential or electromotive potential( ζ- Zeta potential is the potential difference between a continuous phase and a fluid stable layer attached to dispersed particles. It can be directly measured through electric phenomena.

Related News

2024-01-10Cyclic Voltammetry in Electroanalytical Chemistry Research Methods
2024-01-09Definition and measurement method of ZETA potential
2024-01-09What is fluoride? Detection standards for fluoride
2024-01-09Method for measuring the acidity of milk
2024-01-09PH measurement issues and solutions
2024-01-09The basic process of food microbiological testing
2024-01-09Several methods for determining protein content
2024-01-09Detection of heavy metals in food
2024-01-09The reason for the high temperature of the thermometer
2024-01-09How to detect the alcohol content in gas

Copyright 2022:Qinsun Instruments Co., Limited

High-end textile tester supplier | Textile Testing Equipment pdf | Tel:021-67800179 |