Experimental investigation of the light extinction method for measuring aerosol size distributions

The independent and the dependent models of light extinction methods were two new methods for measuring the particle size distribution. Some experiments were carried out to confirm these methods. The experimental results of the measurement of latex particles ranged from 0.091 to 9.85 μm and some samples of TiO₂ powder were presented. Experimental results have shown that these methods have a larger measurable range from about 0.01 to 10 μm, high accuracy and a short measurement time. The optimum value of I/I₀ in the measurement should lie between 0.4 and 0.9. The independent model of light extinction method can even measure ‘multi-peaks’ polydisperse aerosols.