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Correlation of Human Olfactory Responses to Airborne Concentrations of Malodorous Volatile Organic Compounds Emitted from Swine Effluent

^a USDA-ARS, National Swine Research Center, Ames, IA 50011
^b Dep. of Microbiology, Iowa State University, Ames, IA 50011
^c Dep. of Psychology, Iowa State University, Ames, IA 50011
^d USDA-ARS, National Soil Tilth Lab., Ames, IA 50011

View larger version (36K): [in a new window]   Fig. 1. Design of the dynamic emission chamber

View larger version (20K): [in a new window]   Fig. 2. Chromatographic profiles of organic compounds present in (A) an air sample taken in the odor plume from a high-odor swine manure basin, (B) a liquid sample taken from the same basin in A and then placed in the dynamic emission chamber, and (C) synthetic swine odor Z2 placed in the dynamic emission chamber. Chamber operation parameters were identical for samples B and C. Chromatographic peak reference numbers correspond to compounds listed in Table 1

View larger version (25K): [in a new window]   Fig. 3. The emission rate of select VOCs in synthetic swine odor Z2 from the dynamic emission chamber over a 3-h operation period

View larger version (57K): [in a new window]   Fig. 4. The effect of solution concentration on emission rate of acetic acid from the emission chamber over a 1-h sampling period. The mean and standard deviation for four independent samples at each concentration of the odorant solution is shown

View larger version (19K): [in a new window]   Fig. 5. A comparison of processing pathways used in odor quantification by chemical and olfactory methods