Table 3.

Relationship between retro delay and odorant properties

Temporal parameterVP (mmHg)P(logKow)DensityBP (°C)Polar surface
OnsetDelay = 1.3VP + 94Delay = −48.8P + 217Delay = 130.5D − 7Delay = −0.11BP + 123Delay = 3.7PS + 38
r2 = 0.03r2 = 0.91r2 = 0.06r2 = 0.01r2 = 0.65
p = 0.37p = 0.002p = 0.32p = 0.45p = 0.03
t10Delay = −1.88VP − 28Delay = 22.2P − 97Delay = 152D − 181Delay = 0.52BP − 120Delay = −0.60PS − 36
r2 = 0.16r2 = 0.44r2 = 0.18r2 = 0.25r2 = 0.04
p = 0.22p = 0.08p = 0.20p = 0.15p = 0.35
t50Delay = 0.68VP − 12Delay = 4.67P − 16Delay = 89D − 84Delay = 0.05BP + 13Delay = 0.34PS − 12
r2 = 0.06r2 = 0.05r2 = 0.17r2 = 0.01r2 = 0.04
p = 0.32p = 0.33p = 0.21p = 0.44p = 0.36
t90Delay = 3.69VP + 23Delay = −22.6P + 112Delay = −9.5D + 70Delay = −0.54BP + 137Delay = 1.52PS + 33
r2 = 0.29r2 = 0.21r2 = 0.01r2 = 0.13r2 = 0.12
p = 0.14p = 0.18p = 0.49p = 0.24p = 0.25
tpeakDelay = 2.24VP + 137Delay = −92.1P + 366Delay = 62.3D + 106Delay = −0.48BP + 228Delay = 5.24PS + 62
r2 = 0.03r2 = 0.86r2 = 0.01r2 = 0.02r2 = 0.35
p = 0.38p = 0.004p = 0.46p = 0.38p = 0.11
Rise timeDelay = 8.3VP + 117Delay = −81.7P + 387Delay = −156.7D + 342Delay = −1.51BP + 416Delay = 4.7PS + 116
r2 = 0.25r2 = 0.48r2 = 0.02r2 = 0.18r2 = 0.20
p = 0.15p = 0.06p = 0.41p = 0.20p = 0.19
  • VP, Vapor pressure; BP, boiling point; D, density, PS, polar surface. Values in bold are statistically significant.