Electrochemical visualization of latent fingerprints using polyphenazine dyes on the brass cartridges

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F23%3A43927347" target="_blank" >RIV/60461373:22340/23:43927347 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Electrochemical visualization of latent fingerprints using polyphenazine dyes on the brass cartridges

Popis výsledku v původním jazyce

The presented work is focused on the visualization of latent finger-prints left on brass unfired cartridges. Polymer films were preparedfrom 2 mM neutral red or 5 mM toluidine blue, respectively, using,alternatively, two different electrochemical methods (cyclic voltam-metry or chronoamperometry) with relatively short polymerizationtime. The conditions for depositing conductive polymers poly(neutralred) and poly(toluidine blue) from a neutral medium (phosphatebuffer with 0.1M KNO or 0.1 M KNO , respectively) were optimized to3 3preserve genetic information while producing high quality visuali-zation of fingerprints left on brass substrates. The surface mor-phology and quality of the polymer films after the electrochemicaldeposition of both polyphenazine dyes were characterized optically.Finally, a methodology is proposed, how to apply this technique ofvisualizing latent fingerprints with observed details of papillary linesin forensic practice.

Název v anglickém jazyce

Electrochemical visualization of latent fingerprints using polyphenazine dyes on the brass cartridges

Popis výsledku anglicky

The presented work is focused on the visualization of latent finger-prints left on brass unfired cartridges. Polymer films were preparedfrom 2 mM neutral red or 5 mM toluidine blue, respectively, using,alternatively, two different electrochemical methods (cyclic voltam-metry or chronoamperometry) with relatively short polymerizationtime. The conditions for depositing conductive polymers poly(neutralred) and poly(toluidine blue) from a neutral medium (phosphatebuffer with 0.1M KNO or 0.1 M KNO , respectively) were optimized to3 3preserve genetic information while producing high quality visuali-zation of fingerprints left on brass substrates. The surface mor-phology and quality of the polymer films after the electrochemicaldeposition of both polyphenazine dyes were characterized optically.Finally, a methodology is proposed, how to apply this technique ofvisualizing latent fingerprints with observed details of papillary linesin forensic practice.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

<a href="/cs/project/VK01010022" target="_blank" >VK01010022: Pokročilé metody vizualizace daktyloskopických stop</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů