Identification of Human Body Fluid Stains and Non-Biological Stains by Three-Dimensional Fluorescence Spectroscopy.
10.12116/j.issn.1004-5619.2020.500309
- Author:
Jing-Jing CHANG
1
;
Hui ZHOU
2
;
Jin ZHANG
1
;
Xiao-Yu XU
1
;
Feng WANG
2
;
Sheng-Jun XIONG
2
;
Guang-Feng ZHANG
1
;
Xue-Ying YANG
1
;
Kai-Hui LIU
1
Author Information
1. MPS' Key Laboratory for Forensic Genetics, Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China.
2. HT- Nova Co. Ltd., Beijing 101312, China.
- Publication Type:Journal Article
- Keywords:
blood;
forensic medicine;
identification of body fluid stains;
non-biological stains;
saliva;
three-dimensional fluorescence spectroscopy
- MeSH:
Humans;
Forensic Medicine/methods*;
Coloring Agents/analysis*;
Coffee;
Spectrometry, Fluorescence;
Body Fluids/chemistry*
- From:
Journal of Forensic Medicine
2023;39(1):40-44
- CountryChina
- Language:English
-
Abstract:
OBJECTIVES:To establish a rapid and nondestructive identification method for human body fluid stains and non-biological stains using three-dimensional fluorescence spectroscopy.
METHODS:The collected three-dimensional fluorescence spectrum data of human saliva, 3% blood, coffee and Fanta® stains were processed with dimensionality reduction. After wavelet transform, spectral denoising and feature extraction, the classification formula was established. The Fisher discriminant was used for spectrum matching and recognition to establish the analysis method to distinguish stain types.
RESULTS:According to the results of data training and comparison, all the recognition accuracies of Fanta®, coffee, saliva and blood were more than 91.39%. Among them, saliva reached 100% recognition accuracy.
CONCLUSIONS:Three-dimensional fluorescence spectroscopy is a potential method for rapid and nondestructive identification of biological and non-biological stains.
