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

사삼산화철 기반의 소립자시약(Small Particle Reagent)의 접착면 잠재지문 현출 효과에 영향을 미치는 요인

  • 김선민 (순천향대학교 법과학대학원) ;
  • 고강석 (순천향대학교 법과학대학원) ;
  • 이슬비 (순천향대학교 법과학대학원) ;
  • 유제설 (순천향대학교 법과학대학원)
  • Received : 2016.05.03
  • Accepted : 2016.07.04
  • Published : 2016.08.28

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

Acknowledgement

Supported by : 순천향대학교

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