https://www.nist.gov/publications/trace-detection-and-competitive-ionization-erythritol-tetranitrate-mixtures-using
Direct analysis in real time (DART) mass spectrometry was used for trace detection of the nitrate ester explosive, erythritol tetranitrate (ETN), and its sugar
trace detectionerythritol tetranitratecompetitiveionizationmixtures