Method for Combining Electrical Mobility and Optical Size Distributions for Wide Range Particle Size Distribution Measurement
A method is proposed for combining distributions measured with the scanning mobility particle sizer (SMPS) and optical particle counter (OPC). Since SMPS measures mobility diameters and OPC measures optical diameters, to combine these two distributions, the optical diameters need to be converted to mobility diameters first. For aerosols with known refractive indices, the conversion can be done with Mie scattering calculation. If refractive indices are unknown, additional calibration step is needed before performing the Mie scattering calculation. The SMPS and OPC used in this study were a TSI Model 3936 SMPS and a TSI Model 3330 OPS, respectively. Various test aerosols such as emery oil, dioctyl sebacate (DOS or DEHS) with known refractive indices, and ambient aerosols with unknown optical properties were used to evaluate the method. It was found that agreement between the SMPS and OPS distributions in the overlap region was good.
SMPS OPC Mie scattering refractive index
Hee-Siew Han Avula Sreenath Nathan T. Birkeland George J. Chancellor
TSI Incorporated,Shoreview,MN 55126,USA
国际会议
西安
英文
837-839
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）