Compact nuclear magnetic spectrometer for non-destructive condition testing of biological objects

Davydov

Sanin

et al. 2022

The study of the ecological condition of soils in small towns as a factor of sustainable development of territories is substantiated. Various samples were collected from the territories of small towns in the Leningrad Oblast (Russian Federation) and the suburbs of St. Petersburg (for example, the town of Pushkin). The influence of the city size and population number on the processes of soil pollution is considered on the basis of the generalized data. Quantitative information about the accumulation of metals by soils in different categories of settlements is given. The concentration of certain elements in soils in the cities grouped by the number of inhabitants is determined, as well as the environmental hazards of pollution. The ecological hazard of the accumulation of chemical elements in soils and the primary role of Pb and Zn as pollutants in all cities are considered. The accumulation in the soil cover in significant concentrations of Cd, Co and Ca, which significantly change the ecological and geochemical situation in urban landscapes, has been noted. It was determined that such elements as As, Cu and Cl are the key ecological-geochemical pollutants in four groups of settlements. Groups of settlements with different values of the absolute variation of element concentrations have been established.

Section: Discussionmentioning

confidence: 86%

Features of population impact on soil pollution in small towns

Davydov

Sanin

et al. 2022

“…According to the WHO, airborne particulate matter (PM2.5) is currently considered the best indicator of environmental impact. Longterm inhalation of air with a high content of particles with a diameter less than 2.5 μm with alveolar deposition in the human body leads to the progression of several diseases, which leads to a reduction in life expectancy by about 1 year on average [48][49][50][51][52][53][54][55][56][57][58].…”

Section: Methodsmentioning

confidence: 99%

Study of the impact of recultivated granite stone quarry dumps on the environment and agricultural land in the Leningrad region

Davydov

Sanin

et al. 2022

The environmental condition of the granite stone quarry dumps and the adjacent areas of Kuznechnoye village in the Leningrad Region of the Russian Federation was evaluated based on the results of field measurements of dust concentrations in the air (fraction size 1-10 microns) and analytical determination of chemical element contents in soil samples by spectral emission analysis and X-ray spectrometry methods. It has been established that dusting of unreclaimed dumps under conditions of humid climate, which is observed most of the year, and high pH values of soils leads to the formation of polyelement technogenic geochemical anomalies of Pb, Zn, Cu, Ba and Sr. The data obtained can be used in the selection of the most effective method of reclamation of dumps.

“…This made it possible to determine the gross concentrations of several chemical elements that are hazardous to human health. All samples were taken on the same day (within an hour) to check the adequacy of the results of the study [43][44][45][46][47][48][49][50]. Therefore, the soil research areas are located close to each other.…”

Section: Methodsmentioning

confidence: 99%

Monitoring of soil pollution caused by industrial enterprises in one of the districts of St. Petersburg

Davydov²,

Sanin³

et al. 2022

The features of soil pollution control in different districts of St. Petersburg are considered. A method for comparison of pollution in various urban areas has been proposed and experimentally implemented. Studies of the state of soil in three zones of Kirovsky and Moscovsky districts of St. Petersburg have been carried out. It is established that consideration of the factors of migration of polluting elements is necessary to establish the causes of significant pollution and develop measures to improve the environmental situation.