An evaluation of inkjet printed amino acid fingerprint test targets for ninhydrin process monitoring − and some observations

Croxton, Ruth; Kent, Terry; Littlewood, A. B.; Smith, Millicent R.

doi:10.1016/j.forsciint.2021.110741

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…Ninhydrin, a common chemical reagent, is widely used in forensic science. An amino acid of fingerprint residue that produces a purple print following stoichiometric reaction was reported by Ruhemann [ 36 , 37 ], and the reaction pathway of latent fingerprint could also be visualized. CMCS/PVA hydrogel film has an excellent developing effect when used with both of the investigated agents, as shown in Figure 4 S,T.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Development of Sweat Latent Fingerprints Based on Ag-Loaded CMCS/PVA Composite Hydrogel Film by Electron Beam Radiation

Yang

Wang

Zhao

et al. 2022

Gels

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Over time, difficulties have been encountered in detecting potential fingerprints. In this study, an Ag/CMCS/PVA(ACP) hydrogel film was developed for fingerprint development by electron beam radiation method. The chemical bond, thermostability, chemical components, microstructure, and micromorphology of the CMCS/PVA composite hydrogel film were characterized by FT-IR, TG, XRD, and SEM, respectively. Swelling behaviors and mechanical performance of the CMCS/PVA composite hydrogel were also investigated at different irradiation doses, pH, media, and NaCl contents to obtain the optimum preparation conditions. Through experimental exploration, we found that the fingerprints appeared more obvious when the irradiated prepared ACP hydrogel film was sprayed with 0.6 mg/mL of Ag+ and the excitation wavelength was about 254 nm with UV lamp irradiation for 20 min. The cytotoxicity the CMCS/PVA composite hydrogel on mouse skin fibroblasts L929 cells was also studied, confirming its biological security. Sweat latent fingerprint manifestation has important scientific significance with respect to the development of new processes and functional materials in the field of fingerprint manifestation, enriching and complementing the application of composite hydrogels.

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Section: Resultsmentioning

confidence: 99%

Enhanced Development of Sweat Latent Fingerprints Based on Ag-Loaded CMCS/PVA Composite Hydrogel Film by Electron Beam Radiation

Yang

Wang

Zhao

et al. 2022

Gels

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“…Other sections – The following papers are detailed in other sections of this report: use of IND/Zn to emphasize grabbing areas on fabrics [ 239 ] – See Section 4.4.3 ; performance of amino acids reagents to detect fingermarks on different kinds of gloves [ 240 ] – See Section 4.4.6 ; impact of ethanol on the quality and recovery of fingermarks by amino acid reagents and ORO [ 241 ] – See Section 4.5.3 ; design and assessment of positive control tests for amino acid reagents [ [242] , [243] , [244] ] – See Section 4.6.1 .…”

Section: Fingermark Visualisationmentioning

confidence: 99%

“…Quality control – Four papers referred to the design or assessment of positive control tests for amino acid reagents [ [242] , [243] , [244] ] or MS-based techniques [ 226 ]. These studies are briefly described here-below, and the most relevant observations/conclusions cited: Janssen-Bouwmeester et al’s control test aimed at assessing if a questioned solution is performant enough to reach the lower LOD determined experimentally [ 242 ].…”

Section: Fingermark Visualisationmentioning

confidence: 99%

“…They hence recommended storing the tests in the freezer (−13.3°C) and using them up to 6 months after printing. Croxton et al’s control test was designed to assess if dilution series of amino acids were comparable to actual fingermarks when trying to assess the performance of a questioned amino acid reagent [ 244 ]. The control tests were printed using a refillable inkjet printer and aqueous amino acid solutions (composition and concentrations not disclosed).…”

Section: Fingermark Visualisationmentioning

confidence: 99%

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Interpol review of fingermarks and other body impressions (2019 – 2022)

Bécue

Champod

2023

Forensic Science International: Synergy

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“…The ninhydrin method has been implemented to detect latent fingerprints since the late 1960s. Its primary purpose was porous surfaces [14]. Ninhydrin staining occurs when the ninhydrin molecule binds to the amino acid contained in the embedded fingerprint, which turns purple.…”

Section: Introductionmentioning

confidence: 99%

Simple Donor–π–Acceptor Compounds Exhibiting Aggregation-Induced Emission as Hidden Fingerprints Detecting Agents

Filipek,

Hellwig,

Szlapa-Kula

et al. 2023

Molecules

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Latent fingerprints are a significant carrier of information for a court expert. To detect this type of forensic trace, what is necessary is a method that is easy to use, compact, and versatile. The research aimed to investigate the physicochemical properties of luminescent substances of donor–π–acceptor systems in terms of their potential use in detecting hidden fingerprints. During the research, a group of fluorene compounds consisting of the (-CH=C(CN)(COOR)) moiety was designed and successfully synthesized. The optical, electrochemical, and aggregation-induced emission properties were studied. The aggregation-induced emission of compounds has been studied in the mixture of THF (as a good solvent) and water (as a poor solvent) with different water fractions ranging from 0% to 99%. Due to the molecular structure, substances showed different affinities to organic traces. As a result, it was noticed that all compounds showed the AIE phenomenon, while during tests on latent fingerprints, it was observed that two substances had particularly forward-looking features in this field.

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An evaluation of inkjet printed amino acid fingerprint test targets for ninhydrin process monitoring − and some observations

Cited by 7 publications

References 23 publications

Enhanced Development of Sweat Latent Fingerprints Based on Ag-Loaded CMCS/PVA Composite Hydrogel Film by Electron Beam Radiation

Enhanced Development of Sweat Latent Fingerprints Based on Ag-Loaded CMCS/PVA Composite Hydrogel Film by Electron Beam Radiation

Interpol review of fingermarks and other body impressions (2019 – 2022)

Simple Donor–π–Acceptor Compounds Exhibiting Aggregation-Induced Emission as Hidden Fingerprints Detecting Agents

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