标准编号：ISO 20998-2:2022
中文名称：用声学方法测量和描述微粒 第2部分：线性理论指南
英文名称：Measurement and characterization of particles by acoustic methods — Part 2: Linear theory
发布日期：2022-08
标准范围
This document specifies requirements for ultrasonic attenuation spectroscopy methods for determining the size distributions of a particulate phase dispersed in a liquid at dilute concentrations, where the ultrasonic attenuation spectrum is a linear function of the particle volume fraction. In this regime particle-particle interactions are negligible. Colloids, dilute dispersions, and emulsions are within the scope of this document. The typical particle size for such analysis ranges from 10 nm to 3 mm, although particles outside this range have also been successfully measured. For solid particles in suspension size measurements can be made at concentrations typically ranging from 0,1 % by volume up to 5 % by volume, depending on the density contrast between the solid and liquid phases, the particle size, and [9],[10] the frequency range . For emulsions, measurements can be made at much higher concentrations These ultrasonic methods can be used to monitor dynamic changes in the size distribution.
立即下载标准文件