Chinese Optics Letters, 2008, 6 (3): 03214, Published Online: Mar. 27, 2008
A model for aerosol mass concentration using an optical particle counter Download: 739次
光散射 悬浮颗粒物 信号幅度分布 两步标定法 290.5850 Scattering, particles 120.5820 Scattering measurements 010.1100 Aerosol detection
Abstract
A model for measuring aerosol mass concentration by an optical particle counter is presented using the conception of the average mass. In this model, to understand the meaning of the pulse height distribution of particles which is used to inverse mass concentration, the relationship among intensity distribution in the optical sensing volume, particle shape, and the pulse height distribution is discussed. To solve the instability of the equivalent factor, a novel two-step calibration method is proposed. The experimental results demonstrate that mass concentrations calculated by the model are in good agreement with those measured by a norm-referenced instrument. For samples of soot and air, the slopes of fitting lines of data points are 0.9582 and 0.9220, and the correlation coefficients are 0.9991 and 0.9965, respectively.
Fang Gu, Juan Yang, Baomin Bian, Anzhi He. A model for aerosol mass concentration using an optical particle counter[J]. Chinese Optics Letters, 2008, 6(3): 03214.