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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 13 — May. 1, 2012
  • pp: 2236–2249

Mass-specific scattering coefficient for natural minerogenic particle populations: particle size distribution effect and closure analyses

Feng Peng and Steve W. Effler  »View Author Affiliations


Applied Optics, Vol. 51, Issue 13, pp. 2236-2249 (2012)
http://dx.doi.org/10.1364/AO.51.002236


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Abstract

The relationship between the particulate scattering coefficient (bp) and the concentration of suspended particulate matter (SPM), as represented by the mass-specific scattering coefficient of particulates (bp*=bp/SPM), depends on particle size distribution (PSD). This dependence is quantified for minerogenic particle populations in this paper through calculations of bp* for common minerals as idealized populations (monodispersed spheres); contemporaneous measurements of bp, SPM, and light-scattering attributes of mineral particles with scanning electron microscopy interfaced with automated image and x-ray analyses (SAX), for a connected stream–reservoir system where minerogenic particles dominate bp; and estimates of bp and its size dependency (through SAX results-driven Mie theory calculations), particle volume concentration, and bp*. Modest changes in minerogenic PSDs are shown to result in substantial variations in bp*. Good closure of the SAX-based estimates of bp and particle volume concentration with bulk measurements is demonstrated. Converging relationships between bp* and particle size, developed from three approaches, were well described by power law expressions.

© 2012 Optical Society of America

OCIS Codes
(180.5810) Microscopy : Scanning microscopy
(290.0290) Scattering : Scattering
(290.4020) Scattering : Mie theory
(290.5820) Scattering : Scattering measurements
(290.5850) Scattering : Scattering, particles
(340.7460) X-ray optics : X-ray microscopy

ToC Category:
Scattering

History
Original Manuscript: September 26, 2011
Revised Manuscript: January 30, 2012
Manuscript Accepted: February 17, 2012
Published: April 25, 2012

Virtual Issues
Vol. 7, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Feng Peng and Steve W. Effler, "Mass-specific scattering coefficient for natural minerogenic particle populations: particle size distribution effect and closure analyses," Appl. Opt. 51, 2236-2249 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-13-2236

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