TY - GEN
T1 - Comparison of ambient odor assessment techniques in a controlled environment
AU - Henry, C. G.
AU - Schulte, D. D.
AU - Hoff, S. J.
AU - Jacobson, L. D.
AU - Parkhurst, A. M.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Ambient odor assessment
KW - Dynamic triangular forced choice olfactometry
KW - Mask Scentometer
KW - Nasal Ranger®
KW - Odor intensity
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M3 - Conference contribution
AN - SCOPUS:79955126128
SN - 9781617823572
T3 - ASABE - International Symposium on Air Quality and Waste Management for Agriculture 2010
SP - 269
EP - 278
BT - ASABE - International Symposium on Air Quality and Waste Management for Agriculture 2010
T2 - International Symposium on Air Quality and Waste Management for Agriculture 2010
Y2 - 13 September 2010 through 16 September 2010
ER -