Abstract
Modern forensics encounters new challenges and demands new analytical methods that would meet variety of prerequisites regarding their accuracy, rapidness, flexibility, and reliability. Vibrational spectroscopic methods, in particular near-infrared spectroscopy, offer such potential and meet an increasing interest in forensics for authentication of various documents. Pittcon 2020 Conference, which took place in Chicago, Illinois, included a Session dedicated to the role of novel tools of investigation in the forensics of tomorrow. This article summarizes and complements the presentation upon how the current state-of-the-art and future prospects of vibrational spectroscopic techniques fits into this role. The application of near-infrared spectroscopy, including the benefits stemming from using novel miniaturized portable instruments, Raman and surface-enhanced Raman scattering techniques, is discussed in detail in the present article.
Highlights
Recent decades have witnessed a tremendous increase in importance of modern non-invasive analytical methods in forensic applications.[1,2] A number of factors contributed to this occurrence
The present article will shortly summarize the opening lecture given at the Session, in which the current and future potential of vibrational spectroscopic techniques, as the reliable and cost-effective methods of nondestructive analysis, was discussed. The value of these technologies for forensic analysis in the discussed area will be presented on the examples of print material identification and authentication for documents and photography, using near-infrared (NIR) spectroscopy, compared with Raman and surface-enhanced Raman scattering (SERS) techniques
Nondestructive analysis was based on NIR spectroscopy combined with supervised classification methods; discriminant analysis (DA), linear discriminant analysis (LDA), and quadratic discriminant analysis (QDA)
Summary
Recent decades have witnessed a tremendous increase in importance of modern non-invasive analytical methods in forensic applications.[1,2] A number of factors contributed to this occurrence. The value of these technologies for forensic analysis in the discussed area will be presented on the examples of print material identification and authentication for documents and photography, using near-infrared (NIR) spectroscopy, compared with Raman and surface-enhanced Raman scattering (SERS) techniques.
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