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Updated: Mar 9, 2026

Wideband Optical Detector of Ultrasound for Medical Imaging Applications
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Beyond Detectability.

Gregory Leonardos1

  • 1a Environmental Odor Consultant , Arlington , Massachusetts , USA.

Journal of the Air & Waste Management Association (1995)
|January 11, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a new method to assess odor, providing more detailed information beyond just detectability. The procedure captures odor intensity and quality, enhancing dispersion modeling accuracy.

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Area of Science:

  • Environmental Science
  • Sensory Science
  • Odor Analysis

Background:

  • Dispersion models rely on source odor concentration, typically measured as the 50% detection threshold (ED50 or Dilutions-to-Threshold [D/T]).
  • Current methods provide limited information on odor dimensions beyond detectability.
  • Understanding ambient odor concentration requires more than just the threshold value.

Purpose of the Study:

  • To outline a procedure for obtaining comprehensive odor information beyond simple detection.
  • To integrate odor detectability, intensity, and quality into dispersion modeling.
  • To maintain the simplicity and utility of existing odor concentration concepts.

Main Methods:

  • Panelists assess odor at various dilutions, reporting detectability, intensity, quality, and hedonic tone.

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  • A dilution profile is created for each odor sample.
  • The procedure is applicable to both experienced and inexperienced sensory panels.

    • Main Results:

    • The proposed method yields information on detectability, intensity, and quality for wastewater treatment plant odors.
    • It allows estimation of the percentage of the panel detecting odor at a given D/T.
    • Average odor intensity and quality descriptors are provided for each dilution.

    Conclusions:

    • The outlined procedure enhances odor assessment by incorporating multiple sensory dimensions.
    • This provides richer data for dispersion modeling and environmental odor management.
    • The method offers a practical approach to a more complete understanding of odor characteristics.