Smeets Monique A M, Bulsing Patricia J, van Rooden Sanneke, Steinmann Ranjita, de Ru J Alexander, Ogink Nico W M, van Thriel Christoph, Dalton Pamela H
Department of Clinical and Health Psychology, Utrecht University, P.O. Box 80.140, 3508 TC Utrecht, the Netherlands.
Chem Senses. 2007 Jan;32(1):11-20. doi: 10.1093/chemse/bjl031. Epub 2006 Sep 26.
Odor and lateralization (irritation) thresholds (LTs) for ammonia vapor were measured using static and dynamic olfactometry. The purpose of the study was to explore the test-retest reliability and comparability of dynamic olfactometry methodology, generally used to determine odor thresholds following European Committee for Standardization guidelines in the context of odor regulations to outside emissions, with static olfactometry. Within a 2-week period, odor and LTs for ammonia were obtained twice for each method for 24 females. No significant differences between methods were found: mean odor detection thresholds (ODTs) were 2.6 parts per million (ppm) for either method (P = 0.96), and mean LTs were 31.7 and 60.9 ppm for the static and dynamic method, respectively (P = 0.07). Test-retest reliability was higher for the dynamic than for the static method (r = 0.61 vs. 0.14 for ODTs and r = 0.86 vs. 0.45 for LTs). The choice of optimal method for any application, however, depends not only on psychometric factors but also on practical factors such as physicochemical properties of the compound, availability of equipment and expertise, task efficiency, and costs.
采用静态和动态嗅觉测定法测量了氨蒸气的气味和侧向化（刺激）阈值（LTs）。本研究的目的是探讨动态嗅觉测定法与静态嗅觉测定法的重测信度和可比性，动态嗅觉测定法通常用于按照欧洲标准化委员会的指南在气味法规背景下确定向外部排放的气味阈值。在2周内，对24名女性分别用两种方法对氨的气味和LTs进行了两次测量。结果发现两种方法之间没有显著差异：两种方法的平均气味检测阈值（ODTs）均为百万分之2.6（ppm）（P = 0.96），静态和动态方法的平均LTs分别为31.7 ppm和60.9 ppm（P = 0.07）。动态方法的重测信度高于静态方法（ODTs的r = 0.61对0.14，LTs的r = 0.86对0.45）。然而，对于任何应用而言，最佳方法的选择不仅取决于心理测量因素，还取决于实际因素，如化合物的物理化学性质、设备和专业知识的可用性、任务效率和成本。
