Institute of Environmental Medicine, Karolinska Institutet.
Percept Mot Skills. 2010 Aug;111(1):210-28. doi: 10.2466/13.24.27.PMS.111.4.210-228.
Hexanal is a suspected irritant in indoor air. Free-number magnitude estimation was used to measure intensity of odor and sensory irritation of two test concentrations (64 or 178 ppb) as a function of five concentrations and four interpresentation intervals. 9 of 12 participants (6 men, 6 women, ages 20-30 years) were able to detect the odor and report sensory irritation. The method of constant stimuli was applied to calculate the absolute thresholds of hexanal, which were 25 ppb for odor and 281 ppb for sensory irritation. Well-fitting power functions had a higher exponent for sensory-irritation intensity than for odor intensity (0.71 vs 0.66). A statistically significant effect on odor intensity was found for the concentration of presentations preceding the test stimuli and an interaction between concentrations and interpresentation intervals; however, sensory irritation was experienced to last longer than the odor of the same concentration.
己醛是室内空气中的一种可疑刺激物。使用自由数量估计法来测量两种测试浓度（64 或 178 ppb）的气味强度和感官刺激性，作为五个浓度和四个呈现间隔的函数。12 名参与者中的 9 名（6 名男性，6 名女性，年龄 20-30 岁）能够检测到气味并报告感官刺激性。应用恒定刺激法计算己醛的绝对阈值，其气味为 25 ppb，感官刺激性为 281 ppb。拟合良好的幂函数对于感官刺激强度的指数高于气味强度（0.71 对 0.66）。在测试刺激之前的呈现浓度和浓度与呈现间隔之间的相互作用对气味强度有统计学上的显著影响；然而，与相同浓度的气味相比，感官刺激的持续时间更长。
