Electrochemical visualization of latent fingerprints using polyphenazine dyes on brass cartridges

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F24%3A43928984" target="_blank" >RIV/60461373:22340/24:43928984 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/24:00605533 RIV/00007064:K01__/24:N0000068

Výsledek na webu

<a href="https://doi.org/10.1007/s00706-024-03222-3" target="_blank" >https://doi.org/10.1007/s00706-024-03222-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00706-024-03222-3" target="_blank" >10.1007/s00706-024-03222-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrochemical visualization of latent fingerprints using polyphenazine dyes on brass cartridges

Popis výsledku v původním jazyce

This work is focused on the visualization of latent fingerprints left on unfired brass cartridges. Polymer films were prepared from 2 mM neutral red or 5 mM toluidine blue using two different electrochemical methods (cyclic voltammetry or chronoamperometry) with relatively short polymerization times. The conditions for the deposition of conductive polymers, poly(neutral red) and poly(toluidine blue), from a neutral medium (phosphate buffer with 0.1 M KNO3 or 0.1 M KNO3, respectively) were optimized to produce high-quality visualization of the remaining fingerprints on the brass substrates. The surface morphology and quality of the polymer films after the electrochemical deposition of both polyphenazine dyes were characterized by stereomicroscope. Phenazine dyes, which were used for the visualization of fingerprints, have been shown to provide different degrees of homogeneity in the deposited film. Furthermore, the dependence of the stability of the monomer solutions on their age, use, and storage conditions are discussed. Finally, a methodology is proposed for how to apply this technique of visualizing latent fingerprints with observed details of papillary lines in forensic practice.

Název v anglickém jazyce

Electrochemical visualization of latent fingerprints using polyphenazine dyes on brass cartridges

Popis výsledku anglicky

This work is focused on the visualization of latent fingerprints left on unfired brass cartridges. Polymer films were prepared from 2 mM neutral red or 5 mM toluidine blue using two different electrochemical methods (cyclic voltammetry or chronoamperometry) with relatively short polymerization times. The conditions for the deposition of conductive polymers, poly(neutral red) and poly(toluidine blue), from a neutral medium (phosphate buffer with 0.1 M KNO3 or 0.1 M KNO3, respectively) were optimized to produce high-quality visualization of the remaining fingerprints on the brass substrates. The surface morphology and quality of the polymer films after the electrochemical deposition of both polyphenazine dyes were characterized by stereomicroscope. Phenazine dyes, which were used for the visualization of fingerprints, have been shown to provide different degrees of homogeneity in the deposited film. Furthermore, the dependence of the stability of the monomer solutions on their age, use, and storage conditions are discussed. Finally, a methodology is proposed for how to apply this technique of visualizing latent fingerprints with observed details of papillary lines in forensic practice.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

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

2024

Kód důvěrnosti údajů

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

Název periodika

MONATSHEFTE FUR CHEMIE

ISSN

0026-9247

e-ISSN

1434-4475

Svazek periodika

155

Číslo periodika v rámci svazku

8-9

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

8

Strana od-do

851-858

Kód UT WoS článku

001252222800001

EID výsledku v databázi Scopus

2-s2.0-85195786720