Radon is a chemically inert radioactive gas with daughter decay products (DPR) in the form of alpha particles. Radon flux density studies were conducted in the Komarovo residential complex in the Sovetsky district of Volgograd in April 2024 on an area of approximately 0.3 km2. The purpose of the study was to study the radon flux density on a land plot in the Komarovo residential complex (Sovetsky district, Volgograd) in April 2024. Research objectives: 1. Measurement of the radon flux density level at the study points. 2. Statistical processing of the obtained results. 3. Forecasting of radon hazard of a land plot in the residential complex "Komarovo". Research methods and equipment. The method of measuring the radon flux density from the ground surface using Alfarad-Plus (Russia) was used. The authors found an excess of the average values of the radon flux density in the Komarovo residential complex by 5 times compared with the data of the standard values of the radon flux (80 MBq/m2*s). Moreover, spot emissions of radon gas of abnormal values reaching 3945 MBq/m2*s were recorded in the studied area, and in the southwestern part of the residential complex there is a zone with the highest values of PP> 80 MBq/m2*s. There is no anthropogenic factor in the form of radioactive contamination. These facts indicate signs of natural radon pollution of the land and problems of environmental safety of the urbanized territory, which requires operational engineering and environmental measures to develop protective measures against radon danger in the residential complex "Komarovo".

Keywords: radon, radon flux density, radioactive contamination, radon hazard, radon risks, daughter products of radon decay, alpha particles, urban areas, residential complexes, lung cancer

Air pollution in urban areas contributes to the development of various diseases among the population. In this connection, its environmental monitoring is relevant. Goals and objectives. The aim of the study was to study the redox potential of aerosols in the residential area of the village. Kuporosny (Volgograd, Sovetsky district) (experimental area) in comparison with the conditionally clean zone. The objectives of the study were to select aerosol particles in the leaves of apricot trees (Prunus armeniaca L.); preparation of aerosol suspensions from the leaves of apricot trees; study of the ORP of aerosol suspensions when they are infused for 5 minutes in distilled water; discussion of the obtained results. Methods. Leaves of apricot trees (Prunus armeniaca L.) in the amount of 10 pcs. placed in a glass dish, added 100 ml. distilled water, stirred them for several minutes with a glass rod to wash the particles from the surface of the leaves. As a result, aerosol suspensions were obtained, in which the ORP was studied. The ORP value was measured using electrochemical equipment (SevenCompact pH meter S220, manufacturer: Mettler-Toledo GmbH, Switzerland). Results. Established air pollution residential area in the village. Vitriol based on low values of the redox potential (Eh=30.03+0.27 (mV)) compared to the conditionally clean zone (Eh=140.83+0.81 (mV)). Conclusion. The results obtained indicate the predominance of recovery processes in the atmosphere of the residential zone of the village. Vitriol, the deterioration of its oxygen regime and the development of environmental risks for the population living there. In this connection, it is required to establish sources of pollution and develop appropriate environmental measures.

Keywords: aerosols, redox potential, environmental monitoring, residential areas, atmospheric air pollution

Environmental monitoring of physical pollution of territories is carried out in various regions of the Russian Federation and abroad. Thus, the influence of, for example, radio frequency radiation on human health and ecosystems has been established. In this regard, the study of low-frequency fields of electric fields at the stage of pre-design work is relevant. The purpose of the study was to study the electric field strength (E,V/m) on the land allocated for horticulture in the DNT ""Luch"" of the Sredneakhtubinsky district of the Volgograd region in September 2021. Research objectives: measurement of the electric field strength; analysis of the obtained results; study of anthropogenic and natural sources of physical pollution of the territory; discussion of the obtained results. Materials and methods. The study of the electric field strength on a land plot allocated for gardening was carried out using a PZ-34 electromagnetic field parameter meter (Russia), which is registered in the state register of measurement systems (No. 64925-16) and is popular among other researchers. Research results. 30 measurements were taken. The data obtained (E=1.16+0.11 (V/m)) did not exceed the standards for residential areas. The median values of the electric field strength were 10-17 times higher than the median values of the studied indicator in comparison with similar rural areas in other countries of the world. Conclusion. These facts may indicate low-frequency pollution of the territory of a mixed type: an anthropogenic factor (highways, high-voltage power lines), a natural factor: a possible hidden mineral deposit, as a product of the post-volcanic activity of an ancient underground volcano in the Volga steppe zone, which requires further large-scale geological exploration of the study area and possible change in the status of the land.

Keywords: monitoring, electric field strength, horticultural associations, residential areas

Environmental monitoring of recreational areas of settlements allows you to monitor the ecological state of natural objects and identify environmental risks. The purpose of this work was to assess the element composition of aquatic plants (submerged hornwort (Ceratophyllum demersum)) growing in the recreational zone of the settlement - Svetly Yar. Research objectives: selection of aquatic plants; drying plants in natural conditions; Evaluation of plant samples (dry air sample) by mass spectral and atomic emission methods with inductively coupled plasma according to NSAM method No. 512; comparison of the obtained results with clarke ((Kovalsky V.V., 1974; Market B., 1992); evaluation of the results and prediction of the ecological situation. Research methods. Evaluation of plant samples was carried out by mass spectral and atomic emission methods with inductively coupled plasma according to NSAM method No. 512. Research results. The chemical composition of aquatic plants was studied: submerged hornwort (Ceratophyllum demersum) growing in the lake of the recreational zone near the village. Light Yar. In aquatic plants (dry air sample), on average, an increased content of lithium (Li-88.6 g / t) was revealed - 600 times; tin (Sn-14.9 g / t) - 57 times; sodium (Na-20065 g / t) - 30 times, and others compared to clarke (Kovalsky V.V., 1974; Market B., 1992). Conclusion. The results obtained indicate the pollution of the water body and environmental risks for the living population when organizing recreation. An assumption is made about a natural source of pollution. It comes from the buried ancient magma of the paleovolcano in the steppe, which saturates the groundwater with chemical elements that feed the recreational lake. Further research and a comprehensive study of the territory of the village is required. Svetly Yar and its environs with the aim of confirming or refuting the hypothesis of the natural origin of the revealed chemical elements of hurricane values ​​in comparison with clarke.

Keywords: lithium, tin, rhenium, environmental monitoring, environmental risks, natural pollution, aquatic plants, submerged hornwort (Ceratophyllum demersum, ancient magma, super-paleovolcano, lithium-containing magma, recreational zone, brine lakes