Teaching old presumptive tests new digital tricks with computer vision for forensic applications
Bugeja, Nathalie and Oliver, Cameron and McGrath, Nicole and McGuire, Jake and Yan, Chunhui and Carlysle-Davies, Felicity and Reid, Marc (2023) Teaching old presumptive tests new digital tricks with computer vision for forensic applications. Digital Discovery, 2 (4). pp. 1143-1151. ISSN 2635-098X (https://doi.org/10.1039/D3DD00066D)
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Abstract
Presumptive (or ‘spot’) tests have served forensic scientists, law enforcement, and legal practitioners for over a hundred years. Yet, the intended design of such tests, enabling quick identification of drugs by-eye, also hides their full potential. Here, we report the development and application of time-resolved imaging methods of reactions attending spot tests for amphetamines, barbiturates, and benzodiazepines. Analysis of the reaction videos helps distinguish drugs within the same structural class that, by-eye, are judged to give the same qualitative spot test result. It is envisaged that application of these results will bridge the existing suite of field and lab-based confirmatory forensic tests, and support a broader range of colorimetric sensing technologies.
ORCID iDs
Bugeja, Nathalie, Oliver, Cameron, McGrath, Nicole, McGuire, Jake, Yan, Chunhui, Carlysle-Davies, Felicity ORCID: https://orcid.org/0000-0002-2256-796X and Reid, Marc ORCID: https://orcid.org/0000-0003-4394-3132;-
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Item type: Article ID code: 86099 Dates: DateEvent1 August 2023Published28 June 2023Published Online26 June 2023Accepted13 April 2023SubmittedSubjects: Science > Chemistry > Analytical chemistry Department: Faculty of Science > Pure and Applied Chemistry Depositing user: Pure Administrator Date deposited: 11 Jul 2023 08:36 Last modified: 11 Nov 2024 14:00 URI: https://strathprints.strath.ac.uk/id/eprint/86099