Wiecek E
Med Pr. 1977;28(3):235-42.
The results of particles analysis of three kinds of silica dust by means of miscroscopy and sedimentation in Andreasen's pipette served as a base for the determination of factor phi specific for particle surface. This factor is expressed as a ratio of the mean projected diameter (dp) to the aerodynamic diameter (d). The formula of the factor is: (formula: see text). The value of factor phi for tested silica dusts ranges from 2.0 to 2.6 (mean value--2.3), while the variability coefficient is 13.5%. Taking into account the value of factor phi determined by experiment and the value of dispersion of silica dust particles, the expected permeability of the selector (elutriator) and the deposition of dust in lungs were calculated.
通过显微镜检查以及使用安德烈亚森移液管进行沉降法，对三种硅尘进行颗粒分析的结果，构成了测定颗粒表面特定因子φ的基础。该因子表示为平均投影直径（dp）与空气动力学直径（d）的比值。因子的公式为：（公式：见正文）。测试硅尘的因子φ值范围为2.0至2.6（平均值 - 2.3），而变异系数为13.5%。考虑到实验测定的因子φ值以及硅尘颗粒的分散度，计算了分选器（淘析器）的预期渗透率和肺部的粉尘沉积情况。
