Feilberg Anders, Hansen Michael J, Pontoppidan Ole, Oxbøl Arne, Jonassen Kristoffer
Department of Engineering, Aarhus University, Hangøvej 2, Aarhus N 8200, Denmark E-mail:
Danish Technological Institute, Gregersensvej 1, Taastrup 2630, Denmark.
Water Sci Technol. 2018 Mar;77(5-6):1751-1756. doi: 10.2166/wst.2018.061.
Odor analysis by olfactometry relies on the use of n-butanol as a reference compound for standardizing the selection of human panelists. This requires that human sensitivity towards n-butanol is correlated to sensitivity towards other odorants as well as complex odor mixtures. However, there is limited evidence in the literature of such correlations. In this work, datasets from three odor laboratories were investigated in order to clarify this. All panels routinely analyzed n-butanol and HS samples. Two of the laboratories analyzed samples from pig production or industry, whereas one laboratory determined odor threshold values for typical pig production odorants. Non-significant correlations were observed in most cases and odor threshold values for structurally related compounds were not well correlated. The work presented strongly indicates that the sensitivity of odor panelists towards n-butanol is not well transferred to other odorants or odor samples. Furthermore, minimization of variance by using n-butanol is not transferable to other odorants or environmental samples. Thus, the harmonization of human panelists for odor analysis based on n-butanol does not appear to result in harmonization with respect to other odorants or odor samples.
通过嗅觉测定法进行气味分析依赖于使用正丁醇作为参考化合物来标准化人类评判员的选择。这要求人类对正丁醇的敏感度与对其他气味剂以及复杂气味混合物的敏感度相关。然而，文献中关于此类相关性的证据有限。在这项工作中，对来自三个气味实验室的数据集进行了研究以阐明这一点。所有评判小组都常规分析正丁醇和HS样本。其中两个实验室分析来自生猪生产或行业的样本，而一个实验室测定典型生猪生产气味剂的气味阈值。在大多数情况下观察到非显著相关性，且结构相关化合物的气味阈值相关性不佳。所呈现的工作有力地表明，气味评判员对正丁醇的敏感度不能很好地转移到其他气味剂或气味样本上。此外，使用正丁醇使方差最小化的方法也不能转移到其他气味剂或环境样本上。因此，基于正丁醇对人类评判员进行气味分析的协调似乎并不会导致在其他气味剂或气味样本方面的协调一致。
