AN EMPIRICAL METHOD FOR DETERMINING THE CONCENTRATION OF SOLIDS IN SUSPENSION

The degree of depolarization of back-scattered polarized radiation by model hydrosol systems has been investigated. A resulting empirical method for determining suspended solids concentrations has been established. Results show that the degree of depolarization is related to the volume concentration of suspended solids. The degree of depolarization increases with the refractive index ratio of the solid to the dispersing medium at values below 1.38 and remains constant in the 1.38 to 1.82 range. The degree of depolarization increases with the optical path length, but this increase is limited by the concentration of the solids and refractive index ratio of the suspension. The degree of depolarization is a single valued function with respect to concentration and is unaffected by such factors as particle shape, optical activity, and the solid deposits on the optical windows. This approach responds to a greater concentration range of particles and is less dependent on particle size than the commonly used transmission and light-scattering techniques.

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  • Corporate Authors:

    American Chemical Society

    20th and North Hampton Streets
    Easton, PA  USA  18042
  • Authors:
    • Liskowitz, J W
  • Publication Date: 1971-12

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Filing Info

  • Accession Number: 00028556
  • Record Type: Publication
  • Source Agency: United States Merchant Marine Academy
  • Files: TRIS
  • Created Date: Apr 10 1972 12:00AM