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Yuan C, Li M, Wang M, Lv J, Sun Y, Lu T, Jia Y, Cao H, Lin T. Non-destructive and simultaneous development and enhancement of latent fingerprints on stainless steel based on the electrochromic effect of electrodeposited manganese oxides. Talanta 2024; 275:126148. [PMID: 38705016 DOI: 10.1016/j.talanta.2024.126148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 05/07/2024]
Abstract
Latent fingerprints, as one of the most frequently encountered traces in crime scene investigation and also one of the largest sources of forensic evidence, can play a critical role in determining the identity of a person who may be involved in a crime. Due to the invisible characteristic of latent fingerprints, exploring efficient techniques to visualize them (especially the ones resided on metallic surfaces) while retain the biological and chemical information (e.g., touch DNA) has become a multidisciplinary research focus. Herein we reported a new and highly sensitive electrochemical interfacial strategy of simultaneously developing and enhancing latent fingerprints on stainless steel based on synchronous electrodeposition and electrochromism of manganese oxides in a neutral aqueous electrolyte. By utilizing a specially designed device for electrochemical testing and image capture, a series of electrochemical measurements, physical characterization and image analysis have been applied to evaluate the feasibility, development accuracy and enhancement efficacy of the proposed electrochemical system. The qualitative and quantitative analysis on the in situ and ex situ fingerprint images indicates that the three levels of fingerprint features can be precisely developed and effectively enhanced. Forensic DNA typing has also been performed to reveal actual impact of the proposed electrochemical system on subsequent analysis of touch DNA in fingerprint residues. The ratio of detected loci after electrochemical treatment reaches up to 98.5 %, showing non-destructive nature of this fingerprint development and enhancement technique.
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Affiliation(s)
- Chuanjun Yuan
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China; Research Center of Crime Governance in the New Era, Criminal Investigation Police University of China, Shenyang, 110035, China.
| | - Ming Li
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China; Research Center of Crime Governance in the New Era, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Meng Wang
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China; Research Center of Crime Governance in the New Era, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Jiaming Lv
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Yifei Sun
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Tianyi Lu
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Yuxin Jia
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Haijun Cao
- Huadu District Branch, Guangzhou Municipal Public Security Bureau, Guangzhou, 510810, China
| | - Tianchun Lin
- Huadu District Branch, Guangzhou Municipal Public Security Bureau, Guangzhou, 510810, China
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Oliveira LFAM, da Silva LVAT, Sonsin AF, Alves MS, Costa CV, Melo JCS, Ross N, Wady PT, Zinn T, do Nascimento TG, Fonseca EJS, de Assis AML, Hillman AR, Ribeiro AS. Dansyl fluorophore functionalized hierarchically structured mesoporous silica nanoparticles as novel latent fingerprint development agents. RSC Adv 2024; 14:22504-22512. [PMID: 39021455 PMCID: PMC11253167 DOI: 10.1039/d4ra03074e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 07/04/2024] [Indexed: 07/20/2024] Open
Abstract
A nanostructured hybrid material based on mesoporous silica nanoparticles (MCM-41) functionalized with chitosan and a fluorescent dye (dansylglycine), designated MCM-41@Ch@DnsGly, was synthesized and characterized with a view to its application for the visualization of latent fingerprints. These nanoparticles were applied as latent fingerprint developers for marks on surfaces of diverse chemical composition, topography, optical characteristics, and spatially variant nature, typical of forensically challenging evidence. For quality assessment of the enhanced fingermarks, the developed images were analyzed holistically using the UK Home Office scale, forensic protocols and, in terms of their constituent features (minutiae), using forensic software. Across a substantive collection of marks deposited on chemically diverse surfaces and subject to complex environmental and temporal histories, 94% of the enhanced images presented sufficient minutiae for comparison with model dactyloscopy images. This novel nanomaterial presents enhanced performance with significant promise for superior exploitation by forensic practitioners in the acquisition and analysis of crime scene evidence.
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Affiliation(s)
- Lais F A M Oliveira
- Federal University of Alagoas Campus A. C. Simões 57072-970 Maceió AL Brazil
| | - Lais V A T da Silva
- Federal University of Alagoas Campus A. C. Simões 57072-970 Maceió AL Brazil
| | - Artur F Sonsin
- Federal University of Alagoas Campus A. C. Simões 57072-970 Maceió AL Brazil
| | - Meclycia S Alves
- Federal University of Alagoas Campus A. C. Simões 57072-970 Maceió AL Brazil
| | - Cristiane V Costa
- Federal University of Alagoas Campus A. C. Simões 57072-970 Maceió AL Brazil
| | - Jeane C S Melo
- Federal University of Alagoas Campus A. C. Simões 57072-970 Maceió AL Brazil
| | - Nicholas Ross
- Department of Chemistry, University of Leicester Leicester LE1 7RH UK
| | - Paul T Wady
- Diamond Light Source Harwell Science and Innovation Campus Didcot OX11 0DE UK
| | - Thomas Zinn
- Diamond Light Source Harwell Science and Innovation Campus Didcot OX11 0DE UK
| | | | - Eduardo J S Fonseca
- Federal University of Alagoas Campus A. C. Simões 57072-970 Maceió AL Brazil
| | - Alexandro M L de Assis
- Federal University of Alagoas Campus A. C. Simões 57072-970 Maceió AL Brazil
- Technical and Scientific Section of Alagoas, Federal Police 57025-080 Maceió AL Brazil
- National Institute of Criminalistics, Federal Police 70610-902 Brasília-DF Brazil
| | - A Robert Hillman
- Department of Chemistry, University of Leicester Leicester LE1 7RH UK
| | - Adriana S Ribeiro
- Federal University of Alagoas Campus A. C. Simões 57072-970 Maceió AL Brazil
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Bécue A, Champod C. Interpol review of fingermarks and other body impressions 2019 - 2022). Forensic Sci Int Synerg 2022; 6:100304. [PMID: 36636235 PMCID: PMC9830181 DOI: 10.1016/j.fsisyn.2022.100304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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de Lyra ACF, Silva LPD, de Lima Neto J, Costa CV, de Assis AM, de Freitas JD, Lima DJ, Ribeiro AS. Functionalization of pyrrole derivatives as a way to improve their solubility in aqueous medium for applying in latent fingerprints development. Forensic Chem 2021. [DOI: 10.1016/j.forc.2021.100373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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