Are We Ready for It? A Review of Forensic Applications and Readiness for Comprehensive Two-Dimensional Gas...

Area of Science:

• Forensic Chemistry
• Analytical Chemistry
• Chromatography

Background:

• Comprehensive two-dimensional gas chromatography (GC×GC) enhances analyte separation for complex forensic samples.
• Current forensic applications of GC×GC include drug analysis, toxicology, and arson investigations.
• Routine adoption requires meeting rigorous analytical and legal standards.

Purpose of the Study:

• To summarize and review the current state of GC×GC in forensic research.
• To evaluate the analytical and legal readiness of GC×GC for routine forensic applications.
• To provide a comprehensive view of GC×GC for future implementation in forensic laboratories.

Main Methods:

• Literature review of GC×GC applications in forensic science.
• Assessment of analytical advances and technology readiness.
• Categorization of seven forensic applications using a technology readiness scale (1-4).

Main Results:

• GC×GC shows promise for increased separation and detectability in non-targeted forensic analyses.
• Technology readiness levels (TRLs) were assigned to various forensic applications of GC×GC.
• Legal readiness criteria (e.g., Frye, Daubert) were considered alongside analytical advancements.

Conclusions:

• GC×GC has significant potential for forensic evidence analysis, particularly in complex cases.
• Further research is needed to address intra- and inter-laboratory validation, error rates, and standardization.
• Standardization and validation are crucial for the legal admissibility of GC×GC methods in forensic science.