库莫洛后向消光理论在测量颗粒粒径中的应用

摘要

The measurement of particle density is affected by particle size and color in the optical method .The KML(Kum-belka-Munk-Lu)back extinction scattering equations were built that included the particle density ,size and color of uniform suspen-sion .The Щ function was concluded from KML back extinction scattering equation .The Щ function is composed of spectrum factor and particle spectrum factor .Particle size can be measured by KML back scattering with particle spectrum factor .Finally ,the KML method was tested to be practicable ,and the accuracy could meet engineerings .%在光学方法测量颗粒浓度时，测量的精度受颗粒粒径和颗粒颜色的影响。为解决这一问题，将颗粒的浓度、粒径和颜色三个相关联的量统一在一起进行考虑，建立包含这三个属性的浑匀液体库莫洛消光散射方程。本文在库莫洛后向散射方程中归纳出一个称为舒列金函数的系数。舒列金函数由波谱因子与粒谱因子组成。在得到粒谱因子后便可以通过后向散射测定颗粒的粒径。最后，用实验来验证库莫洛方程测量粒径的方法是可行的，精度是可以满足生产要求的。