Technical Note – Gas Chromatography Vapor-Phase Infrared Spectroscopy (GC-VIR)

Technical Note – Gas Chromatography Vapor-Phase Infrared Spectroscopy (GC-VIR)

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December 2023


The National Institute of Justice (NIJ), in partnership with the Forensic Technology Center of Excellence (FTCOE) at RTI International, formed the Forensic Laboratory Needs Technology Working Group (FLN-TWG). The FLN-TWG supports NIJ’s mission to improve knowledge and understanding of the forensic technology needs of federal, state, local, and tribal forensic practitioners and crime laboratories. 

This technical note details the utility of Gas Chromatography Vapor-Phase Infrared Spectroscopy as a supplemental or alternative technique to the traditional methods, gas chromatography-mass spectrometry (GC-MS) and infrared spectroscopy (IR), to analyze seized drugs.   

Funding for this Forensic Technology Center of Excellence report was provided by the National Institute of Justice, Office of Justice Programs, U.S. Department of Justice.

The opinions, findings, and conclusions or recommendations expressed in this report are those of the author(s) and do not necessarily reflect those of the U.S. Department of Justice.

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