The Identification of Cotton Fibers Dyed with Reactive Dyes for Forensic Purposes

Molecules

Jolanta Kumirska¹  Piotr Stepnowski¹  Daria Śmigiel-Kamińska¹  Jolanta Wąs-Gubała² 

[1] Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdansk, Poland;Institute of Forensic Research, Microtrace Analysis Section, Westerplatte 9, 31-033 Krakow, Poland;

关键词: cotton fibers;    dyed fibers;    reactive dyes;    forensic analysis;    chromatographic methods;    spectroscopic methods;   

DOI  :  10.3390/molecules25225435

来源: DOAJ

【 摘 要 】

Some of the most common microtraces that are currently collected at crime scenes are fragments of single fibers. The perpetrator leaves them at a crime scene or takes them away, for example, on their clothing or body. In turn, the microscopic dimensions of such traces mean that the perpetrator does not notice them and therefore usually does not take action to remove them. Cotton and polyester fibers dyed by reactive and dispersion dyes, respectively, are very popular within clothing products, and they are hidden among microtraces at the scene of a crime. In our recently published review paper, we summarized the possibilities for the identification of disperse dyes of polyester fibers for forensic purposes. In this review, we are concerned with cotton fibers dyed with reactive dyes. Cotton fibers are natural ones that cannot easily be distinguished on the basis of morphological features. Consequently, their color and consequently the dye composition are often their only characteristics. The presented methods for the identification of reactive dyes could be very interesting not only for forensic laboratories, but also for scientists working in food, cosmetics or pharmaceutical/medical sciences.

【 授权许可】

Unknown