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Rapid High-throughput Species Identification of Botanical Material Using Direct Analysis in Real Time High Resolution Mass Spectrometry
Published on: October 2, 2016
A point-of-need framework for illicit drug identification with high-resolution mass spectrometry
Thomas P Forbes1, Elizabeth L Robinson1, Edward Sisco1
1National Institute of Standards and Technology, Materials Measurement Science Division, Gaithersburg, Maryland 20899, USA. thomas.forbes@nist.gov.
The Analyst
|March 20, 2025
Summary
Rapid field detection of novel synthetic drugs is crucial for public health. A rugged, high-resolution mass spectrometer with novel ionization techniques offers sensitive, near real-time compound identification at the point-of-need.
Area of Science:
- Analytical Chemistry
- Forensic Science
- Mass Spectrometry
Background:
- The evolving synthetic drug landscape demands advanced, accessible compound detection technologies.
- Current laboratory-based methods lack the speed and agility required for real-time public health response.
- Point-of-need analytical capabilities are essential for first responders and law enforcement.
Purpose of the Study:
- To investigate a field-deployable, high-resolution time-of-flight mass spectrometer for drug detection and identification.
- To evaluate novel ionization techniques, specifically acetone-assisted vacuum ultraviolet (VUV) photoionization and dielectric barrier discharge ionization (DBDI), for rapid analysis.
- To establish a framework for near real-time compound identification supporting public health and interdiction efforts.
Main Methods:
- Utilized a ruggedized, high-resolution time-of-flight mass spectrometer in a laboratory setting.
- Employed chromatography-free measurements with VUV photoionization and DBDI, avoiding helium gas and external pumps.
- Calibrated the system using polyethylene glycol and integrated with NIST databases for compound identification.
Main Results:
- Achieved sensitive performance with limits of detection in the tens to hundreds of picograms for various drug classes.
- Demonstrated accurate compound identification in neat solutions and multi-component mixtures using high mass resolution.
- Validated the system's suitability for rapid, point-of-need analysis without chromatographic separation.
Conclusions:
- The developed mass spectrometry system, utilizing novel ionization, provides a viable solution for rapid, sensitive drug detection in a field-deployable format.
- This technology supports the transition from laboratory-based analysis to agile, point-of-need screening.
- The framework facilitates technology adoption and data management for enhanced public health and safety initiatives.
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