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http://dx.doi.org/10.5392/JKCA.2016.16.08.209

The Factors Influencing Latent Fingermark Development on Adhesive Side of Iron Oxide Powder-based Small Particle Reagent  

Kim, Sun-Min (순천향대학교 법과학대학원)
Go, Gang-Seok (순천향대학교 법과학대학원)
Lee, Seul-Bi (순천향대학교 법과학대학원)
Yu, Je-Seol (순천향대학교 법과학대학원)
Publication Information
The Journal of the Korea Contents Association / v.16, no.8, 2016 , pp. 209-216 More about this Journal
Abstract
Latent fingerprint left on the adhesive sides of tapes can be easily found at a crime scene. Small Particle Reagents(SPR) based on iron oxide($Fe_3O_4$) is a technique for the detection of a latent fingerprint adhesive surface. In this study, found out that the causes affecting the quality of the fingerprints developed when used SPR based on iron oxide. To a suspension of 0.5g of iron oxide in 100ml of distilled water, 0.5ml or more surfactant were added can be developed latent fingerprints of good quality. In addition, using surfactants HLB(hydrophile-lipophile balance) value of 11~18 showed good contrast to the background and latent fingerprint.
Keywords
Iron Oxide; Small Particle Reagent; Surfactant; HLB; Adhesive Tape; Latent Fingerprint;
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