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KMID : 0385520220350030129
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Analytical Science & Technology
2022 Volume.35 No. 3 p.129 ~ p.135
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Comparison of aging fingerprint enhancement by pre-treatment of various initiator powders in the cyanoacrylate fuming method
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Kim Kyung-Soo
Lee Yoon-Jeong
Seo Kyung-Suk
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Abstract
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We tested the pre-treatment of alumina, leucine, alumina mixed with leucine at ratios of 9:1 (Al-Leu (9:1)) and 5:1 (Al-Leu (5:1)), and alumina mixed with sodium lactate at a ratio of 5:1 (Al-Lac (5:1)) on aged fingerprints (1, 7, 14, and 30 days after natural fingerprinting) before cyanoacrylate (CA) fuming to improve the development efficacy. As a result of the experiment, fingerprints with pre-treatment of alumina, leucine, Al-Leu (9:1), Al-Leu (5:1), and Al-Lac (5:1) showed better development efficacy (area and minutiae) than fingerprints without pre-treatment. Therefore, this modified CA fuming method improved the development efficacy with five pretreatments.
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KEYWORD
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cyanoacrylate fuming (CA fuming) #1, initiator #2, latent fingerprint #3, aged fingerprint #4, pre-treatment #5
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