The influence of intra-personal variations in human hand odor on the determination of sample donor
The influence of intra-personal variations in human hand odor on the determination of sample donor
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DOI：
10.1016/j.forsciint.2022.111235
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发表时间：
2022-03-07
影响因子：
2.2
通讯作者：
Furton, Kenneth G.
中科院分区：
文献类型：
--
作者：
Gokool, Vidia A.;Holness, Howard K.;Furton, Kenneth G.
一项双重努力调查进行了研究(A)自然发生的变化在同一供体的人的手气味样本随着时间的推移和(b)在同一供体的人的手气味样本关联的准确性。在5次采样过程中收集了8名供者的手气味样本；样品一式三份，每次取样时采用HS-SPME-GC-MS分析。分析得出的人手气味特征，以调查(a)人手气味特征随时间的变化，以及(b)确定人手气味样本来源的能力，确定样本来自同一来源或不同来源。研究人员观察到，在白天之间、受试者之间的样本中，二维人类气味谱模式方案的变化较大，而在白天之间、受试者内部的样本中，变化较小。尽管受试者内的样本比受试者间的样本显示出更小的变化，但受试者间的人类气味特征仍然存在显著的差异，并且存在时间依赖性。建立了两个用于确定人手气味样本来源的概念验证模型，模型1和模型2的最大性能测量TPR分别为0.817/ FPR = 0.308和1.000/ FPR = 0.206。该研究量化了同一供体人手气味剖面随时间的变化，显示了确定样本来源的更大目标。
A dual effort investigation was conducted to study (a) the naturally occurring variation in same-donor human hand odor samples over time and (b) the accuracy in associating same-donor human hand odor samples. Hand odor samples were collected from 8 donors throughout 5 sampling sessions; samples were collected in triplicate and analyzed by HS-SPME-GC-MS at each sampling session. The resulting human hand odor profiles were analyzed to investigate (a) the variability of human hand odor profiles as a function of time and (b) the ability to determine the source origin of human hand odor samples, determining samples to be from the same source or different sources. The researchers observed greater variation in 2 dimensional human scent profile patterning schemes among inter-day, inter-subject samples and less variation in inter-day, intra-subject samples. Although intra-subject samples revealed less variation than inter-subject samples, there was still notable variability among inter-day, intra-subject human scent profiles, with an observed time dependency. Two proof of concept models for the source determination of human hand odor samples were developed with maximum performance measuring TPR = 0.817/ FPR = 0.308 and TPR = 1.000/ FPR = 0.206 for models one and two, respectively. The study quantified same donor human hand odor profile variation over time displayed within a larger goal of determining sample source origin.