What Is a Forensic Chemistry Laboratory? / What Is Its Purpose?
The Forensic Chemistry Laboratory at Üsküdar University is a research and application center that provides practical and academic training on the processes involved in analyzing chemical evidence obtained from crime scenes, victims, or suspects in criminal cases using analytical methods.
Primary Objective: To develop students’ competencies in applying chemical analysis methods to forensic cases, identifying unknown substances, examining toxicological samples, and reporting analytical findings in accordance with international forensic standards.
Academic Contribution: The laboratory integrates the disciplines of analytical chemistry, instrumental analysis, and toxicology under the umbrella of forensic sciences. It enables students to gain in-depth expertise in evidence security, contamination prevention, and the operational use of high-precision instruments.
Equipment and Technical Infrastructure in the Laboratory
The laboratory infrastructure is equipped with instruments that enable the qualitative and quantitative analysis of trace evidence at the micro level and complex chemical mixtures. The technical equipment available in the laboratory and their functions, as outlined in the “Key Features” section, are listed below:
- Gas Chromatography (GC) / Mass Spectrometry (MS) Infrastructure: Fundamental analytical systems used to separate complex chemical mixtures into their components and to accurately identify narcotics, poisons, and explosive residues at the molecular level.
- Liquid Chromatography (HPLC / LC-MS) Infrastructure: High-performance separation systems used for the analysis of drugs, toxins, and illicit substances in heat-sensitive or non-volatile biological samples (blood, urine, hair, etc.).
- FTIR (Fourier Transform Infrared Spectroscopy) Instrument: An optical system that enables the rapid identification of organic materials—such as fibers, dyes, plastics, or illicit drugs—through fingerprint analysis by examining the chemical bond structures of unknown solid, liquid, or powder samples.
- Ultraviolet-Visible (UV-Vis) Spectrophotometer: Used to perform quantitative analyses by measuring the light absorption (absorbance) of chemical substances in solution at specific wavelengths.
- Extraction and Sample Preparation Stations: Pre-analysis preparation equipment that facilitates the purification of biological/chemical samples, including solid-phase extraction (SPE) and liquid-liquid extraction systems, microcentrifuges, precision balances, and fume hoods.
Research Areas and Fields of Application
Practical laboratory courses, virtual case simulations, and academic research cover the most critical areas of forensic chemistry:
- Forensic Toxicology Analyses: Isolation and detection of poisons, active pharmaceutical ingredients, alcohol, and heavy metals from biological fluids (blood, urine) and tissues using analytical methods.
- Narcotic and Stimulant Analysis: Qualitative and quantitative determination of the chemical structures of illicit substances, their synthetic derivatives, and counterfeit drugs using instrumental analytical instruments.
- Fire and Explosive Residue Investigations: Trace-level analysis of accelerant chemicals (gasoline, diesel, etc.) and explosive residue in samples collected from crime scenes where arson is suspected.
- Trace Evidence Analysis: Comparison and origin determination of microscopic chemical evidence found at crime scenes, such as paint particles, fibers, plastic fragments, adhesives, and ink.
Contributions to Students and the Industry
The Forensic Chemistry Laboratory enables students to integrate theoretical criminological approaches with laboratory practices, thereby fully preparing them to meet industry requirements.
- Analytical Validation Competency: Students learn to validate and calibrate the accuracy, precision, and detection limits of an analytical method in accordance with international forensic science and criminology standards.
- Industry Preparation and Employment: Graduates who gain instrumental analysis experience in this laboratory will acquire the qualifications to serve as specialized personnel in the Criminal Laboratories of the General Directorate of Security, the Criminal Affairs Directorate of the Gendarmerie, the Institute of Forensic Medicine, analytical development (R&D) departments in the pharmaceutical industry, food control laboratories, and private forensic toxicology/analysis centers.
