| Abstract: | The air/water partition coefficients of many odorants can becalculated from available data on their vapor pressures andsolubilities at 25°. A gas-flow method is described forobtaining equilibrium concentration data to calculate the coefficientsof certain odorants for which theoretical or gas chromatographictechniques are not applicable. It is shown that the odor thresholdsobtained in airdilution olfactometry agree with those measuredby sniff tests on aqueous dilutions, when the air/water partitioncoefficient is taken into consideration. Similar calculationsinvolving the oil/water partition coefficient show close correspondencebetween thresholds measured in water or safflower oil dilution.A conversion factor was obtained for comparing squeeze-bottlepair tests with stoppered flask 2/5 tests in the measurementof olfactory threshold. |
