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The Institute of Forensic Science and Criminology of Bundelkhand University (Jhansi, India) has used Fourier transform infrared spectroscopy (FT-IR) combined with principal component analysis (PCA) and partial least square regression (PLSR) to investigate adulteration in petroleum products and to design an adulterant profiling method.

Forensic Experts Analyze Skeletal Remains at Crime Scene Using Advanced Techniques in Forensic Anthropology and Science | Image Credit: © Khuram Ibn Sabir - stock.adobe.com

Matthieu Baudelet, an associate professor of Chemistry at the National Center for Forensic Science at the University of Central Florida, is currently exploring how laser-based spectroscopic techniques can be used in forensic anthropology. Spectroscopy recently sat down with Matthieu Baudelet, Kristen Livingston, and Katie Zejdlik to discuss their research as part of “The Future of Forensic Analysis” content series.

Researchers at Texas A&M University (College Station, Texas) presented a novel approach to forensic hair analysis that is based on high-throughput, nondestructive, and non-invasive surface-enhanced Raman spectroscopy (SERS) and machine learning (ML). Using this approach, Dmitry Kurouski and his team investigated the reliability of the detection and identification of artificial dyes on hair buried in three distinct soil types for up to eight weeks.

Dr. Rajinder Singh, Professor and former Head of the Department of Forensic Science, Punjabi University in Patiala, Punjab, India. Photo Credit: Rajinder Singh

As part of “The Future of Forensic Analysis” content series presented by Spectroscopy, we sat down with Dr. Rajinder Singh of Department of Forensic Science, Punjabi University, Patiala, to talk about his recent work using attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FT-IR) to distinguish different animal species based on hair samples.

Yellow law enforcement tape isolating crime scene. Blurred view of city street, toned in red and blue police car lights | Image Credit: © New Africa - stock.adobe.com

A recent study explores the effectiveness of near-infrared (NIR) and ultraviolet-visible (UV-vis) spectroscopy in determining the time since deposition (TSD) of bloodstains, a critical aspect of forensic investigations. By comparing these two methods, researchers aim to improve the accuracy and reliability of bloodstain dating, with potential implications for real-world forensic applications.

A multi-organizational team, believing that a reason for slow adoption is a lack of evidence that data taken on one spectrometer can transfer across to data taken on another spectrometer to provide consistent diagnoses, investigated multi-center transferability using human oesophageal tissue. By using a common protocol, the researchers aimed to minimize the difference in machine learning performance between centers.

This study aimed to establish a fast, accurate method for quality evaluation of herbal medicine using NIR and chemometrics with ultraviolet-visible spectrophotometry (UV-vis) as a standard method to determine the total flavonoids content.

A recent article authored by scientists from the Institute of Sport and Preventive Medicine, part of the University of Saarland (Saarbrücken, Germany), discusses their investigation of the absolute and relative test-retest reliability of the Moxy Monitor, as well as their investigations into side differences of oxygen saturation at the vastus lateralis muscle of both legs in male cyclists.