Модификация турбидиметрического высокоселективного метода для измерения быстропротекающих процессов

Abstract

Introduction: Optical methods like the turbidimetric high-selective method (modification of the spectral transparency method) are successfully applied to measuring disperse characteristics of aerosols. The turbidimetric high-selective method allows you to define the characteristics of disperse media (distribution function, concentration) in the range from 20 nm to 6 pm. However, this method uses an analytical function of distribution of particles by the sizes (gamma-distribution) which has only two parameters and does not always adequately define the evolution of the nanodisperse aerosols created as a result of a fast process (a shock wave or impulse). Purpose: This method should be modified to eliminate the shortcoming of its realization, via replacing the two-parametric distribution function by a multi-parametric one. Results: We carried out an experimental check of the turbidimetric high-selective method in its multi-parametric modification. We processed experimental data for suspension in a cuvette (an established process) and for a solidphase aerosol created by an impulse (a fast process). We compared the results obtained by the original method based on gammadistribution function with the results obtained by the modified method. As model substances, we chose suspension of nanodisperse powder of aluminum (Alex) in acetone, and aerosol of aluminum oxide fine powder (Al