TY - JOUR

T1 - On the evaporation dynamics of trinitrotoluene microparticles on the glass surface

AU - Tivileva, M. I.

AU - Gruznov, V. M.

AU - Baldin, M. N.

AU - Vorozhtsov, A. B.

AU - Kikhtenko, A. V.

AU - Titov, S. S.

N1 - Funding Information: This work was financially supported by the Comprehensive Program for Basic Research of the Siberian Branch of the Russian Academy of Sciences (Project Nos. 0385-2018-0014, 0331-2019-0029, and 0331-2018-0009). The authors are grateful to Irina I. Zasypkina for her help in preparing the article. Publisher Copyright: © 2021 by Begell House, Inc.

PY - 2021

Y1 - 2021

N2 - 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 .

AB - 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 .

KW - Evaporation of solid traces

KW - Evaporation of trinitrotoluene

KW - Evaporation time

KW - Solid traces on the surface

UR - http://www.scopus.com/inward/record.url?scp=85111333694&partnerID=8YFLogxK

U2 - 10.1615/IntJEnergeticMaterialsChemProp.2021038342

DO - 10.1615/IntJEnergeticMaterialsChemProp.2021038342

M3 - Article

AN - SCOPUS:85111333694

VL - 20

SP - 17

EP - 25

JO - International Journal of Energetic Materials and Chemical Propulsion

JF - International Journal of Energetic Materials and Chemical Propulsion

SN - 2150-766X

IS - 3

ER -