In such cases it is possible to simplify the theoretical treatment by considering only the factors that make a significant contribution to the attenuation, while neglecting others.Īn important advantage of the ultrasonic method of particle size analysis over other methods is its applicability to systems that are concentrated, electrically non-conductive and optically opaque. For example, in suspensions of mineral oxides the attenuation of acoustic signal occurs predominantly due to viscous losses, while in emulsions thermal and (at high frequencies) scattering losses prevail. Depending on the properties of particular disperse systems, different types of the acoustic energy losses may prevail.
The experimentally obtained value of attenuation can then be fitted to a particular theoretical model for different attenuation mechanisms, and the particle size can be evaluated from the fit, for instance by using eqs. The acoustic spectrometer generates ultrasound pulses that undergo attenuation in disperse systems due to interaction with dispersed particles and the dispersion medium. The method of particle size analysis based on the measurement of ultrasound attenuation is referred to as acoustic spectroscopy. Zelenev, in Studies in Interface Science, 2001 V.8.6 Particle Size Analysis by Acoustic Spectroscopy Sample preparation – Sample splitting (in preparation)Įugene D. Sample preparation – Dispersing procedures for powders in liquids Particle size analysis – Image Analysis methods – Part 2: Dynamic image analysis methods (in preparation)ĭetermination of particle size distribution by gravitational liquid sedimentation – Part 1: General principles and guidelinesĭetermination of particle size distribution by gravitational liquid sedimentation methods – Part 2: Fixed pipette methodĭetermination of particle size distribution by gravitational liquid sedimentation methods – Part 3: X-ray gravitational techniqueĭetermination of particle size distribution by centrifugal liquid sedimentation methods – Part 1: General principles and guidelinesĭetermination of particle size distribution by centrifugal liquid sedimentation methods – Part 3: Centrifugal X-ray method (in preparation)ĭetermination of particle size distributions – Electrical sensing zone method Particle size analysis – Image Analysis methods – Part 1: Static image analysis methods (in preparation) Particle size analysis – Photon correlation spectroscopy Particle size analysis – Laser diffraction methods – Part 1: General principles Representation of results of particle size analysis – Part 5: Validation of calculations relating to particle size analysis using logarithmic normal probability distribution (in preparation) Representation of results of particle size analysis – Part 4: Characterization of a classification process (in preparation) Representation of results of particle size analysis – Part 3: Fitting of an experimental curve to a reference model (in preparation) Representation of results of particle size analysis – Part 2: Calculation of average particle sizes/diameters and moments from particle size distributions Representation of results of particle size analysis – Part 1: Graphical representation Particle size analysis by methods other than sieving – Terminology (in preparation) Test sieving – Part 1: Methods using test sieves of woven wire cloth and perforated metal plates Industrial screens and screening – Vocabulary Test sieves and test sieving – Vocabulary Industrial screens – Woven wire cloth, perforated plate, and electroformed sheet – Designation and nominal sizes of openings