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Applied Optics

Applied Optics


  • Vol. 19, Iss. 6 — Mar. 15, 1980
  • pp: 975–983

Some chemical, physical, and optical properties of fly ash particles

Philip J. Wyatt  »View Author Affiliations

Applied Optics, Vol. 19, Issue 6, pp. 975-983 (1980)

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Fly ash samples from two different generating plants have been examined by laser light scattering techniques. Individual particles below ~3-μm diam, found to be primarily spherical, were electrostatically levitated in a single-particle light scattering photometer while their differential light scattering (DLS) patterns were recorded. During this measurement period, the relative humidity within the scattering cell could be varied to study the water accretion properties of the suspended particle. The recorded DLS patterns are used to derive the complex refractive index, size, and accreted layer thickness of the particle. Each particle appears to have a different refractive index, probably indicative of the varied microscopic conditions of formation. Even at very high relative humidities, the fly ash particle surface does not appear to have a natural affinity for water, contrary to popular expectations.

© 1980 Optical Society of America

Original Manuscript: May 4, 1979
Published: March 15, 1980

Philip J. Wyatt, "Some chemical, physical, and optical properties of fly ash particles," Appl. Opt. 19, 975-983 (1980)

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  1. D. A. Lundgren, D. W. Cooper, APCA J. 19, 243 (1969).
  2. D. S. Covert, R. J. Charlson, N. C. Ahlquist, J. Appl. Meteorol. 11, 968 (1972). [CrossRef]
  3. I. N. Tang, J. Aerosol Sci. 7, 361 (1976). [CrossRef]
  4. I. N. Tang, H. R. Munkelwitz, J. G. Davis, Brookhaven National Laboratory Report BNL 2132 (1976).
  5. I. N. Tang, H. R. Munkelwitz, J. G. Davis, J. Aerosol Sci. 8, 149 (1977). [CrossRef]
  6. P. J. Wyatt, D. T. Phillips, R. M. Berkman, J. Colloid Interface Sci. 34, 59 (1970).
  7. P. J. Wyatt, J. Colloid Interface Sci. 39, 125 (1972). [CrossRef]
  8. K. Takahashi, M. Kasabara, M. Itoh, J. Aerosol Sci. 6, 45 (1975). [CrossRef]
  9. S. Martin, in Humidity and Moisture, Vol. 3, A. Wexler, Ed. (Reinhold, New York, 1965), Chap. 29.
  10. “Constant Humidity Solutions,” in Merck Index, P. G. Stecher, Ed. (Merck and Co., Rahway, N.J., 1976), p. MISC-71.
  11. G. L. Fisher, D. P. Y. Chang, M. Brummer, Science 192, 553 (1976). [CrossRef] [PubMed]
  12. P. J. Wyatt, Ed. Atlas of Light Scattering Curves (Science Spectrum, Inc., Santa Barbara, Calif., 1977).
  13. P. J. Wyatt, in Methods in Microbiology, J. R. Norris, D. W. Ribbons, Eds. (Academic, New York, 1973), Chap. 6.
  14. M. Kerker, The Scattering of Light and Other Electromagnetic Radiation (Academic, New York, 1969).
  15. A. L. Aden, M. Kerker, J. Appl. Phys. 22, 1242 (1951). [CrossRef]
  16. P. J. Wyatt, D. T. Phillips, J. Theor. Biol. 37, 493 (1972). [CrossRef] [PubMed]
  17. P. J. Wyatt, J. Appl. Bacteriol. 38, 47 (1975). [CrossRef] [PubMed]
  18. See P. R. Bevington, Data Reduction and Error Analysis for the Physical Sciences (McGraw-Hill, New York, 1969).
  19. L. D. Faddeyev, J. Math. Phys. N.Y. 4, 72 (1963). [CrossRef]
  20. J. Shmoys, J. Appl. Phys. 32, 689 (1961). [CrossRef]
  21. R. Mireles, J. Math. Phys. N.Y. 45, 179 (1966).
  22. R. G. Newton, J. Math. Phys. 3, 75 (1962). [CrossRef]
  23. D. D. Cooke, M. Kerker, J. Colloid Interface Sci. 42, 1 (1973). [CrossRef]
  24. D. T. Phillips, P. J. Wyatt, Appl. Opt. 11, 2082 (1972). [CrossRef] [PubMed]

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