The task that faced the authors was construction of a mobile lidar complex for detection and investigation of aerosol-gas formations in the atmosphere. The complex must be constructed of commercial industrially produced components as much as possible. Many of engineering solutions had been previously worked out by the authors when the first lidar of such type was developed. The complex is designed for study of capabilities of lidar sensing for remote investigation of aerosol-gas formations by their fluorescence and Raman scattering spectra, as well as topographyc objects by fluorescence spectra of their surfaces. The complex has been tested in 2016, and may be applied for atmospheric sensing, for detection of potentially hazardous and dangerous admixtures above the cities, industrial and agricultural emissions, including emissions after disclosures of agricultural animal burial sites. The complex is mounted on a motor vehicle chassis and is energy-independent, and that allow using it for remote sensing of different objects in different natural conditions. Probing distance: 30 000 meters in elastic scattering channel and 5 000 meters in fluorescence channel.
Measurements of the diffuse reflection coefficients of organic and inorganic materials and media in solid, granular and liquid forms were made in the UV field of 230-400 nm. A single channel spectrometer with an integrating sphere was used. Relation between diffuse reflection coefficients and the structure and composition of the samples is discussed. These data allow us to estimate the prospect of machine vision systems application for the UV range in such areas as biology, geology, remote control of materials and media.
Integrated automation software for remote lidar complex is developed within this work. The complexity of software is caused by the presence of the remote controls and measurement units in the lidar complex structure. This task is solved by the unification of all these devices into a single program for improving the efficiency of the operator and the lidar system as a whole. The software is fulfilled using LabView 2014 programming environment, it functionally contains a number of executable units for every element of the system.
The study of soil samples taken in regions of the industrial enterprises locations in Tomsk areas was performed. The instrumental neutron-activation analysis was used for determination of the chemical composition of samples. The accumulation levels of 26 chemical elements in soils, including rare and radioactive, were determined. The level values of all of the studied elements exceeded background concentrations. The observed elements concentrations exceeded the background ones by factor ranging from 1.1 for Rb (Artificial stone plant) up to 20 for Br (Borrow pit enterprise) to 28 for Ce (Ash dump of the heat power station). The pollution of all studied areas was estimated as high on the basis of calculated values of the total pollution index. The soil geochemical peculiarities in Tomsk are established by elements accompanying production in regions of industrial enterprises locations. The soil composition reflects the specificity of the urban area with various industrial enterprises, due to certain properties of the soil, which constantly accumulates pollutants of emissions from businesses shops and vehicles.
At the recent years, the increasing interest to laser methods of detection of harmful and dangerous admixtures in the open atmosphere is observed. In this work, experimental results are given of remote detection of acetone vapors, which is the marker of triacetone triperoxide (TATP), with the use of the frequency-pulse 13С16О2 laser with generation line at 11.2 μm.
This study concerns the human health risk due to exposure of Co, Cu, As, Mn contained in soils of the Southern Kuzbass, where the coal industry is developed. Soil samples of 200 were taken in Mezhdurechensk - city with intensive coal mining and processing industries. The content of heavy metals in samples were determined using the electron spectroscopy. Several samples were also investigated by methods of the instrumental neutron activation analysis (INAA) and the inductively coupled plasma mass spectrometry (ICP-MS). With regard to the effects of heavy metals on the adult population health the total Hazard Index (HI) for ingestion and inhalation routes was 0.87×10-1 and 7.8×10-1 respectively. According to the contribution of Co, Cu, As, Mn to the total HI the elements form the decreasing series Mn (0,42-0,50)> Co (0.18-0.20)> Cu (0,13-0,19 )> As (0,05-0,09). These chemical elements are present in the organic and inorganic forms in coals and coal wastes. Ranking the city territory has shown that administrative districts have different HI values (8.4 10-1 - 8.8 10-1). When analyzing the human health risks of coal mining and coal-processing enterprises the impact of heavy metals as components of coals and combustion products should be taken into account.
The measurements of "isolated" CO2 line (6231.6 cm-1) absorption spectra in wide pressure range from 2 to 1000 mbar
were performed on 3-channel high-resolution diode laser spectrometer. 4 theoretical models used for the description of
lineshape contour: usual Voigt, Hard-collisional (Rautian), Soft-collisional (Galatry), and Speed-dependent Voigt
(Boone). LabView based software used for the testing of current lineshape models. This software performed the
nonlinear least-squares fit of the model spectrum to the experimental spectra recorded at each pressure individually. The
detailed research of weak lines influence to the retrieved parameters of "isolated" CO2 (6231.6 cm-1, R4 band 30013-
00001) is provided. It is shown that the use of Rautian and Galatry lineshape models leads to a significant deviation from
linear of the narrowing coefficient pressure dependence while coming to the high pressures range. Most appropriate for
the common description of whole experimental spectra in entire range of pressures (up to 1000 mbar) is the Speed-
Dependent (Boone) profile.
The absorption spectra of pure H2O with mixtures of broadening gases N2, Ar, Xe, He, Ar and air have been measured in 1.39 mμ spectral region by high resolution spectrometer based on diode laser (DFB NEL, Japan). For the processing of pure water spectra and it’s mixtures with a different broadening gases in a wide pressure range we used a multispectrum fitting procedure developed at IAO. The program is based on a relatively simple Rautian-Sobel’man line profile and linear pressure dependence of the line profile parameters. H2O measured spectra bulk processing results in the retrieving of such line parameters: zero-pressure line center positions, intensities, self-broadening and self-shift coefficients of pure water, broadening and shift coefficients for other gases which are describes the experiment with the minimum residuals in a wide pressure range.