Identification Of Detergents For Forensic Fiber Analysis

Keywords

Detergent analysis; Fluorescence microscopy; Forensic fibers; Principal component analysis

Abstract

Trace fibers are an important form of trace evidence, and identification of exogenous substances on textile fibers provides valuable information about the origin of the fiber. Laundering textiles can provide a unique fluorescent spectral signature of the whitening agent in the detergent that adsorbs to the fiber. Using fluorescence microscopy, the spectral characteristics of seven detergents adsorbed to single fibers drawn from laundered textiles were investigated, and principal component analysis of clusters was used to characterize the type of detergent on the fiber. On dyed nylon fibers, spectra from eight different detergent pairs could be resolved and washed validation fibers correctly classified. On dyed acrylic fibers, five different detergent pairs could be resolved and identified. Identification of the detergent type may prove useful in matching a trace fiber to its bulk specimen of origin.

Publication Date

11-1-2016

Publication Title

Analytical and Bioanalytical Chemistry

Volume

408

Issue

28

Number of Pages

7935-7943

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/s00216-016-9927-8

Socpus ID

84988422292 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84988422292

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