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.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0013936X
• Corporate Authors:

  American Chemical Society

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

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 1206-11
• Serial:
  • Environmental Science & Technology
  • Volume: 5
  • Issue Number: 12
  • Publisher: American Chemical Society
  • ISSN: 0013-936X
  • EISSN: 1520-5851
  • Serial URL: http://pubs.acs.org/journal/esthag

Subject/Index Terms

• TRT Terms: Chemical analysis; Measurement; Polarization; Pollution; Sewage treatment; Solids; Suspensions (Chemistry)
• Old TRIS Terms: Polarization measurement; Suspended solids analysis
• Subject Areas: Environment; Marine Transportation;

Filing Info

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