Abstract
The size distribution of small aerosol particles was determined by measuring the intensity of scattered light at three angles for a fixed wavelength of the incident beam. A pair of relative intensities of scattered light at the angles θ and π-θ to that at the angle π/2 were calculated as a function of the modal size and logarithmic standard deviation. Charts of the relative intensities of scattered light showed the possibility of determination of the particle sizes of aerosol less than 0.3 μm in modal diameter. The experimental results obtained from the theoretical charts for dioctyl phthalate aerosol were compared with those from the polarization ratio method. It was found that the parameters for the characterization of aerosol particle size were in good agreement between the two methods.
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