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Updated: Aug 7, 2026

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
Published on: July 25, 2014
Trace level detection and identification of chemicals related to the chemical weapons convention from complex organic
T Jagadeshwar Reddy1, U V R Vijaya Saradhil, S Prabhakar
1National Center for Mass Spectrometry, Indian Institute of Chemical Technology, Hyderabad 500007, India.
Abstract:
A solid-phase extraction (SPE) method involving selective usage of solvents has been developed for trace level identification of chemical warfare agents (CWAs) present in a complex organic background. The total ion chromatograms obtained from direct gas chromatography-electron ionization mass spectrometric analysis of samples spiked with CWAs in the presence of diesel are very complex and dominated by hydrocarbon peaks and the same after treatment with SPE show distinct peaks corresponding to spiked chemicals. The recovery of samples from SPE is found to be 70-85% at the 10 ppm level.
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