The problem of air quality control is relevant at the present time. There are a lot of different devices and methods of air monitoring. The promising devices for air monitoring are automated air monitoring systems functioning in real time regime. The basic part of such system is a chemical gas sensor. Gas sensors can be combined into the arrays or so called multisensory systems to increase their effectiveness. Sensor arrays using semiconductor sensors based on SiO2CuOx, SiO2SnOxCuOy, SnOxZrOy, silver-polyacrylonitrile thin films made at department of chemistry and ecology have been investigated in this work. As a result of sensors signals processing gas recognition technique has been developed. The recognition of ammonia, nitrogen dioxide, chlorine has been made.

Keywords: monitoring, massifs of sensors, semiconductor sensors of gases

  We have investigated electrical and gas sensitive properties of gas sensor based on carbon nanotubes (CNT) and carbon nanotubes modified by metal oxides (such as tin oxide and silicon oxide).  Also we  have find out that modification of  CNT by  metal oxides helps to  improve film`s adhesion to substrate, decrease electrical resistance, recovery time, working temperature , enhance gas sensitivity in comparison with sensitive elements based  only on CNT or metal oxides. Moreover experimental results showed that properties of composite material depend on concentration correlation of solutions. As a result we can get highest sensitivity of sensor element by choosing optimal relation between concentrations of solutions.

Keywords: Сarbon nanotubes, modification, tin oxide, silicon oxide, gas sensor

  Neural network model of distribution of pollutant in the atmosphere of the city of Taganrog has been developed on the basis of monitoring data, meteorological information and calculation made by software «Ecolog-gorod». The results of the work of model have been visualized in software ArcGis. Distribution maps of nitrogen dioxide has been built under the conditions of eight directions of wind, two wind speeds and two temperature ranges.

Keywords: Neural network, prediction model, urban air pollution

Results of research the ties of refrectory oxide, which form in the course of filling with stainless steels, and specific point defects impairing casts of stainless steel.

Keywords: quartz mould, chromium steel, oxides, chemical analysis, physicochemical interaction

In article are considered questions of the study of the composition of the drip of ash from galvanic bath with the application of chromium coatings, the results of research concentrations of chromium above the surface of the bath and in the working zone depending on the height above the mirror electrolyte

Keywords: working zone, galvanic bath, drip ash, chrome, local capturing

It is considered the dependence of the operation mode of floor radiant panel heating systems depending on the design parameters for the internal air  

Keywords: panel-radiant heating, heat-insulated floor, parameters of the internal air

The state of the atmospheric air in such industrial cities of the Rostov region, as Belaya Kalitva, Donetsk, Kamensk-Shakhtinsky over the last 10 years (2003-2012). Identified main pollution sources and priority pollutants. Analysis of the concentrations of pollutants in areas of concentration of industrial enterprises, on highways and in dwelling zones. It is established that industrial cities are specific «geochemical provinces», in which abnormally elevated concentrations of many chemical elements. On the background of the decrease of the role of industrial enterprises in the air pollution increases the role of motor transport  

Keywords: Anthropogenous influence, industrial production, ecological situation, environment, an ecosystem, the industry, transport, pollution.

Evaluating of the compressed air drying competitive methods for wagon depots are given in the article. The criteria for evaluating of each method are defined. The considered compressed air drying competitive methods profiles are built. The wet condensation ability effectiveness increase ways are defined.

Keywords: Compressed air drying, Competitive profiles, Wagon depot, Expert estimation

The level of dust pollution appearing during the dump of cars loaded with crushed limestone is defined. The data on the composition of the dust particles dispersed into the air in the working area during the cars loaded with rubble dump is obtained. The scheme of experimental-industrial dedusting ventilation and the results of its tests are described.

Keywords: system of dedusting ventilation, rubble, dust pollution

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Information is brought In article on using electro aerosol generator as humidifier of the air. They are Brought main formulas, allowing calculate the main parameters of the work electro aerosol humidifiers. The Offered design efficient electro aerosol generator, taking into account all particularities of the work electro aerosol generator in to quality of the humidifier.

Keywords: moistening, increasing to moisture of the air, electro aerosol, electro aerosol generator.

The paper presents the experimental research of workplace air dedusting unit supply asphalt plant, as well as the dependence of the efficiency of dust collection and air filtration sand and gravel for the operating conditions of the power unit aerodynamic parameters of blowing-suction air flow and hydrodynamic parameters of the plume dispersed liquid.
Keywords: asphalt plant power unit, dedusting air, aerodynamic parameters, hydrodynamic parameters.

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