2010
DOI: 10.1021/jp105168h
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Sublimation Rate of TNT Microcrystals in Air

Abstract: Reliable measurements of the sublimation rate of nonuniform layers of trinitrotoluene (TNT) microcrystals were carried out using a quartz crystal microbalance (QCM). The sample layer was prepared by precipitation of TNT from a well-defined volume of its solution in acetonitrile. The TNT solution was placed on the QCM electrode surface to form the precipitated layer of TNT microcrystals. It is shown that the kinetics of small TNT particles sublimation is controlled by the molecular diffusion in air. The sublima… Show more

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Cited by 37 publications
(55 citation statements)
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“…30 The molecular motion is a quasi-stationary steady-state diffusion and transport process. The solution of molecular concentration (C) at the distance H is 31…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…30 The molecular motion is a quasi-stationary steady-state diffusion and transport process. The solution of molecular concentration (C) at the distance H is 31…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…In Figure 6 b, the non-isothermally determined vapor pressure values of TNT are compared to those determined isothermally, [13] and those reported in the literature. [5,8,[25][26][27] This indicates that absorbance spectroscopy can be used as an accurate, rapid estimation method of the vapor pressure of TNT. The discrepancy of the vapor pressure values of TNT in the literature increases with an increase in temperature as a result of the expected dissociation of the studied materials at temperatures closer to their melting points.…”
Section: Tntmentioning
confidence: 99%
“…A variety of direct and indirect methods has been used to determine thermodynamic parameters as well as vapor pressures of volatile solid materials. Quartz crystal microbalance (QCM) [8] and atomic force microscopy (AFM) [9,10] are the only techniques that have been used to isothermally determine thermodynamic parameters at nanoscale with results indicating QCM to be a more efficient method. [6,7] TGA often requires a flow of gas through both the balance chamber and the sample.…”
Section: Introductionmentioning
confidence: 99%
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“…Um die Konzentration von TNT in der Luft in einer Entfernung R von der festen Quelle zu bestimmen, verwendeten wir die angepasste Prozedur von Gershanik und Zeiri [17] unter der Annahme, dass die Moleküldiffusion der bestimmende Transportprozess ist, während andere Phänomene, z. Dazu wurde die Viskosität des Mediums, und damit der Diffusionskoeffizient des Fluorids, genau eingestellt.…”
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