{"title":"Presumptive drug identification by ninhydrin fingerprint analysis","authors":"Erin Lange, Felicity Carlysle-Davies","doi":"10.1016/j.forc.2024.100597","DOIUrl":null,"url":null,"abstract":"<div><p>A known method of smuggling drugs into prisons is by infusing papers with these illicit substances, and sending them to prisoners through the mail. During the preparation of these drug-infused samples, there is potential for direct contact between the hands and paper, leading to the deposition of fingerprints. These fingerprints would not be visible to the naked eye, but can easily be rendered visible using the ninhydrin method for latent fingerprint detection. This reaction is well known to produce a visible purple coloured fingerprint on the surface of the material in a well-documented, consistent manner. This research, however, demonstrates variations of this reaction in the presence of illicit drugs on the surface of the paper being analyzed. The fingerprints have been demonstrated to vary in shade and intensity of colour in the purple/blue/grey region following the ninhydrin process when different drugs have been infused in the paper material. This phenomenon has the potential to be used as a presumptive indicator of any drugs that may be present in infused papers.</p></div>","PeriodicalId":324,"journal":{"name":"Forensic Chemistry","volume":"40 ","pages":"Article 100597"},"PeriodicalIF":2.6000,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2468170924000493/pdfft?md5=d69c7fdec848cfb03bfb15a76ab92fa4&pid=1-s2.0-S2468170924000493-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Forensic Chemistry","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2468170924000493","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
A known method of smuggling drugs into prisons is by infusing papers with these illicit substances, and sending them to prisoners through the mail. During the preparation of these drug-infused samples, there is potential for direct contact between the hands and paper, leading to the deposition of fingerprints. These fingerprints would not be visible to the naked eye, but can easily be rendered visible using the ninhydrin method for latent fingerprint detection. This reaction is well known to produce a visible purple coloured fingerprint on the surface of the material in a well-documented, consistent manner. This research, however, demonstrates variations of this reaction in the presence of illicit drugs on the surface of the paper being analyzed. The fingerprints have been demonstrated to vary in shade and intensity of colour in the purple/blue/grey region following the ninhydrin process when different drugs have been infused in the paper material. This phenomenon has the potential to be used as a presumptive indicator of any drugs that may be present in infused papers.
期刊介绍：
Forensic Chemistry publishes high quality manuscripts focusing on the theory, research and application of any chemical science to forensic analysis. The scope of the journal includes fundamental advancements that result in a better understanding of the evidentiary significance derived from the physical and chemical analysis of materials. The scope of Forensic Chemistry will also include the application and or development of any molecular and atomic spectrochemical technique, electrochemical techniques, sensors, surface characterization techniques, mass spectrometry, nuclear magnetic resonance, chemometrics and statistics, and separation sciences (e.g. chromatography) that provide insight into the forensic analysis of materials. Evidential topics of interest to the journal include, but are not limited to, fingerprint analysis, drug analysis, ignitable liquid residue analysis, explosives detection and analysis, the characterization and comparison of trace evidence (glass, fibers, paints and polymers, tapes, soils and other materials), ink and paper analysis, gunshot residue analysis, synthetic pathways for drugs, toxicology and the analysis and chemistry associated with the components of fingermarks. The journal is particularly interested in receiving manuscripts that report advances in the forensic interpretation of chemical evidence. Technology Readiness Level: When submitting an article to Forensic Chemistry, all authors will be asked to self-assign a Technology Readiness Level (TRL) to their article. The purpose of the TRL system is to help readers understand the level of maturity of an idea or method, to help track the evolution of readiness of a given technique or method, and to help filter published articles by the expected ease of implementation in an operation setting within a crime lab.
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