[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.15207/JKCS.2020.11.6.075

Comparison of Enhancement Effect of Ninhydrin Fluorescent Fingerprints Using Zinc Chloride and Liquid Nitrogen and Introducing the New Cooling Method for Post Treatment of Ninhydrin

Jeon, Su-Yeon (Division of Forensic Science, Soonchunhyang University)
Kim, Chang-Yong (Division of Forensic Science, Soonchunhyang University)
Kim, Mi-So (Division of Forensic Science, Soonchunhyang University)
Yu, Je-Seol (Division of Forensic Science, Soonchunhyang University)

Publication Information

Journal of the Korea Convergence Society / v.11, no.6, 2020 , pp. 75-82 More about this Journal

Abstract

We identify the enhancement effects of zinc chloride and liquid nitrogen on low quality ninhydrin-developed fingerprint and we wanted to find out another cooling methods available for ninhydrin/Zn fingerprint enhancement besides the liquid nitrogen, which is hard to access. Artificial sweat was used to make the same level of fingerprints, and fingerprints developed by each technique were evaluated by SWGFAST standard and compared the average score and standard deviation. As a result of the experiment, ninhydrin/Zn-liquid nitrogen got 3.2 and 3.3 as average scores that enough to identify an individual such as 1,2-IND/Zn or DFO. Also, experiments using dry ice instead of liquid nitrogen as a way of the ninhydrin/Zn-developed fingerprints enhancement resulted in 3.0 and 2.9 as average scores, therefore, it was confirmed that dry ice is also a sufficient cooling method to be considered in practice in the field of forensic science.

Keywords

Forensic Science; Fingerprint; Artificial Sweat; Ninhydrin; Enhancement; Liquid Nitrogen; Convergence;

Citations & Related Records

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