Sex Differentiation from Human Scent Chemical Analysis

Separations

article

Petra Pojmanová¹  Nikola Ladislavová¹  Veronika Škeříková¹  Jaromír Kukal²  Štěpán Urban¹ 

[1] Department of Analytical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology Prague;Department of Computing and Control Engineering, Faculty of Chemical Engineering, University of Chemistry and Technology Prague

关键词: human skin scent;    sex differentiation;    headspace GC-MS;    class identification;   

DOI  :  10.3390/separations10050293

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Human scent traces are often the only pieces of evidence providing information about individuals that were present at a crime scene. In this study, the possibility of sex differentiation using detailed chemical analyses of human scent samples for forensic purposes is discussed. The human scent samples were analyzed through the use of headspace-gas chromatography/mass spectrometry (HS-GC/MS). The results of these chemical analyses were evaluated using several data processing approaches (Linear Support Vector Machine, Quadratic Discriminant Analysis, and Ridge Regression), which were applied to distinguish between sexes from the human scent samples obtained from the palms of six volunteers for twelve weeks. This study indicates that sex differentiation based on the chemical analysis of human scent samples using HS-GC/MS is possible. The best results were obtained using the Ridge Regression with thresholding providing accuracy and a critical sensitivity of the sex differentiation of better than 91%.

【 授权许可】

CC BY