Table 1.

Sorption properties of odorants used

Odorant	Uptakea	Retentiontimeb	Partitioncoefficientc,d	Henry'slaw constant
Strongly sorbed odorants
Methyl benzoate	0.9	1	*	1.3e3
Benzaldehyde	0.84	0.8	*	870
Isovaleric acid	*	10	2.9e4	2.5e5
Menthonee	*	*	*	210
Weakly sorbed odorants
Heptanal	0.32	0.1	9.1e1	72
Propyl acetatef	*	*	*	110
Amyl acetate	0.2	0.1	4e2	56
Butyl acetate	*	0.1	6.2e2	77
Methyl valerate	*	*	*	59

Values show different measures of sorption properties for odorants used. The first three columns show different experimental measurements of odorant sorption, measured as uptake (fraction removed from airstream after passage through human nasal cavity), retention time (relative retention time of odorant by frog olfactory epithelium), or partition coefficient (relative partitioning of odorant into water vs air^c or mucus vs air^d). The fourth column shows water–air partition coefficients calculated as Henry's law constants using the group method in HENRYWIN 3.2 (Environmental Protection Agency) at 25°C. Higher numbers reflect stronger odorant sorption.

^aKurtz et al., 2004.

^bMozell and Jagodowicz, 1973.

^cAmoore and Buttery, 1978.

^dHornung and Mozell, 1981; Hornung et al., 1987b.

^eYang et al., 2007b.

^fKent et al., 1996.

*Values not available from experimental literature.