Using ultrasonic wave reflection to measure solution properties

Chul Woo Chung, John S. Popovics, Leslie J. Struble

Research output: Contribution to journalArticlepeer-review


Ultrasonic wave reflection coefficients of aqueous solutions were measured using high-impact polystyrene as a buffer material to provide enhanced sensitivity over metal or ceramic buffer materials. The wave reflection values showed linear reduction when the concentration of chemical species in solution was increased, but a distinct relation between concentration and reflection coefficient was obtained for each solute species tested. However, more unified relationships were observed between reflection coefficient and other solution parameters - solution density, acoustic impedance, and P-wave velocity - that were consistent for all solution species. Based on this behavior an expression to compute solution density solely from reflection coefficient is derived, which can be applied to estimate solution density in solutions of unknown solute species and concentration when other measurements, such as wave velocity, are not possible.

Original languageEnglish (US)
Pages (from-to)266-272
Number of pages7
JournalUltrasonics Sonochemistry
Issue number1
StatePublished - Jan 2010


  • Acoustic impedance
  • Concentration
  • Density
  • Solution
  • Ultrasound
  • Velocity
  • Wave reflection

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Environmental Chemistry
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics
  • Organic Chemistry
  • Inorganic Chemistry


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