Chemical species contributions light scattering

Chemical Species Contributions to Light Scattering by Aerosols at a Remote Arid Site... 

Ouimette, J. R., R. C. Flagan, and A. R. Kelso, Chemical Species Contributions to Light Scattering by Aerosols at a Remote Arid Site, in Atmospheric Aerosol Source Air Quality Relationships, ACS Symposium Series, No. 167 (E. S. Macias and P. K. Hopke, Eds.), pp. 125-156, Am. Chem. Soc., Washington, DC, 1981. 

To test the applicability of statistical techniques for determination of the species contributions to the scattering coefficient, a one-year study was conducted in 1979 at China Lake, California. Filter samples of aerosol particles smaller than 2 ym aerodynamic diameter were analyzed for total fine mass, major chemical species, and the time average particle absorption coefficient, bg. At the same time and location, bgp was measured with a sensitive nephelometer. A total of 61 samples were analyzed. Multiple regression analysis was applied to the average particle scattering coefficient and mass concentrations for each filter sample to estimate aj and each species contribution to light scattering, bgn-j. Supplementary measurements of the chemical-size distribution were used for theoretical estimates of each b pj as a test of the effectiveness of the statistical approach. 

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