Rapid GC-MS method for screening seized drugs in forensic investigations: optimization and validation

Area of Science:

• Forensic Science
• Analytical Chemistry

Background:

• Rising drug-related crimes necessitate faster and more accurate forensic drug screening.
• Existing methods can be time-consuming, leading to judicial and law enforcement delays.

Purpose of the Study:

• To develop and optimize a rapid Gas Chromatography-Mass Spectrometry (GC-MS) method for forensic drug analysis.
• To significantly reduce sample analysis time while maintaining high accuracy and reliability.

Main Methods:

• Optimization of temperature programming and operational parameters for GC-MS.
• Systematic validation of the developed method, including limit of detection (LOD) and precision studies.
• Application of the rapid GC-MS method to real forensic case samples.

Main Results:

• Reduced total analysis time from 30 minutes to 10 minutes.
• Improved limit of detection by at least 50% for Cocaine and Heroin (e.g., 1 μg/mL for Cocaine).
• Demonstrated excellent repeatability and reproducibility (RSD < 0.25%) and accurate identification of diverse drug classes in real samples (>90% match quality).

Conclusions:

• The rapid GC-MS method significantly enhances forensic drug screening efficiency.
• This advancement aids in reducing forensic backlogs and expedites judicial processes.
• The method provides a faster, reliable tool for law enforcement and forensic laboratories.