Comparison of ambient odor assessment techniques in a controlled environment

C. G. Henry, D. D. Schulte, S. J. Hoff, L. D. Jacobson, A. M. Parkhurst

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This paper compares results of using - dynamic triangular forced-choice olfactometry (DTFCO), Mask Scentometers, Nasal Rangers®, and an odor intensity reference scale (OIRS) -intensity ratings - to assess odors in a controlled-environment chamber in the Iowa State University Air Dispersion Laboratory. The methods were used to assess thirteen odor levels in the chamber where swine manure mixed with water was used to vary the odor levels. Dynamic triangular forced-choice olfactometry did not correlate well to the other ambient odor assessment methods. Predicting D/T using intensity ratings degraded Ro2 with the other methods in all cases. Average Intensity-predicted D/T, the Mask Scentometer and the Nasal Ranger® correlated well with each other, had strong Ro2 (greater than 0.85), had regression slopes nearest one, and the session means were not found to be significantly different (α=0.05). Using the geometric means of the device D/T settings, (D/T)G, improved Ro2 between the other methods and the Nasal Ranger® and Mask Scentometer. Average Intensity-predicted D/T values were three to four times higher than Nasal Ranger® assessment ((D/T)G and D/T, respectively), and a Nasal Ranger® (D/T)G was roughly five times higher than Mask Scentometer (D/T)G.

Original languageEnglish (US)
Title of host publicationASABE - International Symposium on Air Quality and Waste Management for Agriculture 2010
Pages269-278
Number of pages10
StatePublished - Dec 1 2010
EventInternational Symposium on Air Quality and Waste Management for Agriculture 2010 - Dallas, TX, United States
Duration: Sep 13 2010Sep 16 2010

Publication series

NameASABE - International Symposium on Air Quality and Waste Management for Agriculture 2010

Other

OtherInternational Symposium on Air Quality and Waste Management for Agriculture 2010
CountryUnited States
CityDallas, TX
Period9/13/109/16/10

Keywords

  • Ambient odor assessment
  • Dynamic triangular forced choice olfactometry
  • Mask Scentometer
  • Nasal Ranger®
  • Odor intensity

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