Determination of explosive vapor concentrations with remote sampling in the control of objects
- Authors: Gruznov V.M.1, Baldin M.N.1, Pryamov M.V.1, Maksimov E.M.2
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Affiliations:
- Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
- Military Unit No. 35533
- Issue: Vol 72, No 11 (2017)
- Pages: 1155-1160
- Section: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/182673
- DOI: https://doi.org/10.1134/S1061934817110041
- ID: 182673
Cite item
Abstract
A procedure is proposed for the determination of the vapor concentration of 2,4,6-trinitrotoluene (TNT) in air at a level of 10–16 g/cm3 in the control of objects for the presence of TNT. The procedure includes preconcentration of TNT vapors and gas chromatographic determination with a limit of TNT detection at a level of 0.08 ± 0.02 pg in a sample. The procedure was applied to the control objects in cells of typical automatic luggage locker with sampling through sampling air ducts. A measure of sample losses as the breakthrough of vapors through sampling air ducts and gas dynamic conditions for the reduction of vapor losses as the ratio of diffusion coefficient to the air duct flow rate were proposed. The time constant of the saturation of the sampling system with TNT vapors and the time constant of its cleaning were determined. It was shown that TNT vapors can be detected virtually satisfactorily near TNT-containing objects with sampling through long channels.
About the authors
V. M. Gruznov
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
Author for correspondence.
Email: GruznovVM@ipgg.sbras.ru
Russian Federation, Novosibirsk, 630090
M. N. Baldin
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
Email: GruznovVM@ipgg.sbras.ru
Russian Federation, Novosibirsk, 630090
M. V. Pryamov
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
Email: GruznovVM@ipgg.sbras.ru
Russian Federation, Novosibirsk, 630090
E. M. Maksimov
Military Unit No. 35533
Email: GruznovVM@ipgg.sbras.ru
Russian Federation, Moscow