RU2261858C1 - Dimethylsulfoxide as mimetic of organophosphorus compounds - Google Patents

Abstract

FIELD: organic chemistry, mimetic of toxic agents, in particular organophosphorus gases.

SUBSTANCE: invention relates to application of dimethylsulfoxide CH₃S(O)CH₃ (I) as mimetic of organophosphorus gases for training using optical infrared remote devices for chemical prospecting and checking availability thereof. claimed invention is useful in army personnel sustaining training using dimethylsulfoxide which simulates in vapor state organophosphorus gas spectral characteristics in the middle IR-range.

EFFECT: compound, simulating organophosphorus gas spectral characteristics, useful in army personnel sustaining training.

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Description

The invention relates to the field of development of simulators of toxic substances (OM), in particular organophosphorus toxic substances (FOV), and in particular to the use of dimethyl sulfoxide (DMSO) CH ₃ S (O) CH ₃ (I) as a simulator of FOV during training in optical infrared remote means of chemical reconnaissance and verification of their performance.

Chemical contamination simulation tools are used to train troops in chemical contamination conditions and practical skills in working with chemical reconnaissance devices. The criterion for assessing the correct use of chemical reconnaissance devices is their operation in the presence of a simulator simulating those properties of OM that cause an indication effect. When testing the performance of chemical reconnaissance devices, OM simulators can also be used. The criterion for evaluating the operability of a chemical reconnaissance device in this case is also its operation in the presence of a simulator.

There is information in the literature on the use of dimethyl methylphosphonate (DMMP) and sulfur hexafluoride (SF ₆ ) as FOV simulators in the development and testing of lidar systems for the remote detection of chemical contamination [1. A.I. Erkin; D.D. Talberg; V.A. Malyshev; V.A. Gosenbuk. Modern principles of organization and equipment of chemical intelligence and chemical control bodies (review). // Civil defense abroad. - 1991. - No. 5-6, p. 39-44]. However, these compounds are used to simulate the optical characteristics of type GW FOVs only in a narrow spectral range of 9.2–10.8 μm (1087–980 cm ^–1 ), which corresponds to the working spectral range of active lidar systems based on CO ₂ lasers. The above compounds do not fully mimic the optical properties of FOVs when evaluating the analytical characteristics of passive remote chemical reconnaissance and control facilities operating in a wider spectral range of 8.0-14.0 μm (1250-714 cm ^-1 ) corresponding to the atmospheric transparency window in mid-wave infrared spectrum of electromagnetic radiation. At the same time, the above FOV simulators are not suitable for use in training personnel of the troops to work on optical remote infrared chemical reconnaissance devices and to test their operability, since they are toxic and inaccessible compounds.

Thus, it can be noted that at present there is no FOV simulator for training troops in working with optical remote infrared chemical reconnaissance devices and verifying their operability.

The aim of the invention is the use of non-toxic, affordable organic compounds as a simulator of FOV, which allows you to perform tasks on the training of personnel on optical remote infrared chemical reconnaissance devices and verify their performance.

This goal is achieved by the use of a compound simulating the spectral characteristics of FOVs in a vapor state, in the mid-infrared range, in the range of 1250-714 cm ^-1 , corresponding to the transparency window of the atmosphere. Organic compounds (trimethyl phosphate and dimethyl sulfoxide (DMSO)) with spectral characteristics close to the FOV in the mid-infrared range were studied as simulators.

The main criterion for choosing the composition of the simulation formulation can be considered the most complete coincidence of the spectral bands of the simulator and the simulated FOV in the mid-infrared range, which ensures the presence of an indication effect, as well as its low toxicity and availability.

The main characteristics of the spectral bands of the studied formulations in comparison with the FOV are presented in the table.

Table
The main characteristics of the spectral bands of the studied formulations in comparison with FOV Compound The maximum position of the analytical spectral line, cm ^-1 The half width of the analytical spectral line, cm ^-1 The intensity of the analytical spectral line at the maximum, rel. units Molecular cross section for the interaction of vapor of a substance with infrared radiation, cm ²

1021 twenty 0.25 3.63 · 10 ^-24

1021 16 0.1 4.56 · 10 ^-24 CH ₃ S (O) CH ₃
DMSO 1021 40 0.4 4.4910 ^-25 (CH ₃ O) ₃ PO Trimethyl phosphate 1059 23 0.27 3.31 · 10 ^-25

From the data presented in the table it follows that, according to the set of estimated parameters, DMSO has the spectral characteristics closest to the FOV (the position of the maximum of the DMSO analytical line and the analytical lines of sarin and soman coincide, and the half-width and intensity of these lines, as well as the molecular cross section for the interaction of these substances with IR -radiation are of the same order of magnitude) and therefore most suitable for simulating FOV vapors. In addition, DMSO is a non-toxic and affordable organic compound, which is widely used as a solvent, as well as a component of cosmetics and medicines [2. Knunyants I.L. Chemical Encyclopedia, t.2, M., 1990, p.64].

The DMSO proposed as a simulator can be used to solve the problems of training troops in working with optical remote infrared chemical reconnaissance equipment and verifying the operability of these weapons.

Claims (1)

The use of dimethyl sulfoxide as a simulator of organophosphorus compounds in training on optical remote infrared means of chemical reconnaissance and to test their operability.