*e-mail: jez@unb.br本文编辑:Ivo M. Raimundo Jr. (Associate),漫反射FTIR的潜在指纹和判别分析用于人类性别鉴定

IF 1.3 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of the Brazilian Chemical Society Pub Date : 2023-05-26 DOI:10.21577/0103-5053.20220150
Marco Antonio de Souza, A. Santos, Sebastião William da Silva, J. Braga, M. H. Sousa
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引用次数: 0

摘要

隐性指纹是一种重要的犯罪现场证据,但并不总是可恢复的,技术上也不适合用指纹模式进行分析。法医科学表明,可以利用化合物从痕迹中挖掘出其他信息。红外光谱是一种无损技术,广泛应用于各种法医证据。本文采用红外光谱和偏最小二乘判别分析方法,在潜在性手印分析的基础上确定了人的性别。从42名男性和女性供体中采集指纹样本,然后在黑暗或光照条件下保存,并在采集后的30天内测量傅里叶变换红外(FTIR)光谱。在3000 ~ 2800 cm-1和1790 ~ 1150 cm-1区域,两性别间的峰强度差异最大。结果表明,正确率在80%以上。
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*e-mail: jez@unb.br Editor handled this article: Ivo M. Raimundo Jr. (Associate) Diffuse Reflectance FTIR of Latent Fingerprints and Discriminant Analysis for Sex Identification in Humans
Latent fingerprint is an important crime scene evidence, but it is not always recoverable or technically suitable for analysis with fingerprint patterns. Forensic science has shown that other information can be explored from traces using chemical compounds. Infrared spectroscopy is a nondestructive technique that is widely applied to a variety of forensic evidence. In this work, infrared spectroscopy and partial least square discriminant analysis were used to determine the human sex based on latent fingermark analysis. Fingerprint samples were taken from 42 male and female donors, then kept in either dark or light storage conditions, and the Fourier transform infrared (FTIR) spectra were measured considering a period of up to 30 days from collection. The regions from 3000 to 2800 cm-1 and 1790 to 1150 cm-1 presented the greatest differences in the peak intensities among the two sex groups. The results showed a correct discrimination rate higher than 80%.
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来源期刊
CiteScore
2.90
自引率
7.10%
发文量
99
审稿时长
3.4 months
期刊介绍: The Journal of the Brazilian Chemical Society embraces all aspects of chemistry except education, philosophy and history of chemistry. It is a medium for reporting selected original and significant contributions to new chemical knowledge.
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