On the evaporation dynamics of trinitrotoluene microparticles on the glass surface

M. I. Tivileva, V. M. Gruznov, M. N. Baldin, A. B. Vorozhtsov, A. V. Kikhtenko, S. S. Titov

Research output: Contribution to journalArticlepeer-review

Abstract

The results of measuring the time dependence of the concentration of trinitrotoluene (TNT) vapor over its solid microconcentrations on the glass surface with a low TNT concentration on the surface of 100 ng/cm2 are presented. Such microconcentrations of traces are typical for the conditions of anti-terrorist control of objects for the presence of TNT. The measurements were made using a portable multicapillary gas chromatograph (GC) EKHO-V-IDTS (Russia) with TNT vapor concentration. The threshold for determining the concentration of TNT vapor by the EKHO-V-IDTS gas chromatograph corresponds to the modern level and is equal to 10−14 g/cm3 . Vapor sampling is performed by a vortex sampling device (VSD), which is used in the anti-terrorist control of objects. It is shown that the initial surface concentration of TNT traces of 100 ng/cm2 on the glass surface decreases to 12 ng/cm2 in a time of 2.6 h due to evaporation into an open half-space under laboratory conditions. The vapor concentration over the residual TNT concentration of 12 ng/cm2 corresponds to the GC sensitivity threshold for TNT vapor concentration equal to 10−14 g/cm3 .

Original languageEnglish
Pages (from-to)17-25
Number of pages9
JournalInternational Journal of Energetic Materials and Chemical Propulsion
Volume20
Issue number3
DOIs
Publication statusPublished - 2021

Keywords

  • Evaporation of solid traces
  • Evaporation of trinitrotoluene
  • Evaporation time
  • Solid traces on the surface

OECD FOS+WOS

  • 2.05 MATERIALS ENGINEERING

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