Electrozone Sensing in Particle Size Analysis
Particle Size Analysis
Published Online: 15 SEP 2006
Copyright © 2000 John Wiley & Sons, Ltd. All rights reserved.
Encyclopedia of Analytical Chemistry
How to Cite
Figueiredo, M. M. 2006. Electrozone Sensing in Particle Size Analysis. Encyclopedia of Analytical Chemistry. .
- Published Online: 15 SEP 2006
Particle sizing is a rapidly growing field, not only because of its importance in a great variety of technological applications but also due to its outstanding relevance to numerous areas of scientific research.
The currently available instruments to measure particle-size distributions are many and varied, the results often being dependent on the measuring technique used. It is thus essential to understand the physical principles behind each technique in order to make an adequate choice.
Electrozone sensing, a widely used method of particle-size analysis, constitutes the main topic of this paper. A general description of its operating principle is provided, followed by some practical considerations mainly concerning sample preparation and the selection of electrolyte solutions and aperture tubes. Being a technique that requires prior calibration, emphasis is placed on the calibration procedures. The section dedicated to the measurement of special materials also reviews some recent improvements of this technique. Finally, a list of commercially available equipment is supplied, together with its most relevant features.