The problem of environmental pollution and degradation of all elements of ecosystems is becoming more and more urgent. Therefore, the main purpose of the work is to monitor the quality of water bodies. The objects of the research were Norilsk, Kayerkan, Talnakh, Dudinka, and Lama Lake. The study was conducted in August-September 2019. The work investigated the organoleptic characteristics of water bodies: smell, color, turbidity, salt content, pH, alkalinity, hardness, SO 4 2-, COD. Organoleptic, visual, potentiometric, titrimetric methods were used as research methods. The work identified the causes of odor, turbidity, the color of the water; an evaluation scale for determining organoleptic indicators is given. The color of the water was determined by comparing samples of the test liquid with solutions that imitate the color of natural water. The categories of water salinity are revealed. It was found that the hardness and odor of the water samples did not exceed the norm. The acidic pH is highest on the Ambarnaya River at two sampling points and also on the Daldykan River. It was concluded that the ecological situation in the region requires the adoption of serious measures since the level of pollution of water bodies in many respects exceeds the norm.

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It is considered that Norilsk ranks second in terms of atmospheric contamination. Industrial enterprises annually emit large amounts of sulphur dioxide, phenols, and heavy metal particles. The city is located within the Far North and is distinguished by the harsh climate of the subarctic type. The snow cover can lie from 244 to 277 days. Snow is a good sorbent; therefore, the snow cover accumulates solid and gaseous pollutants that enter it from the atmosphere with precipitation or are absorbed from it. The purpose of this study was to analyse the snow cover in the Norilsk industrial region and assess the state of atmospheric air in the winter. To achieve this goal, it is necessary to solve the following tasks: conduct a literature review on a given topic; take samples of snow in various industrial districts of Norilsk; study the dependence of the qualitative characteristics of snow on the sampling site; draw conclusions on the quality of snowpack in different areas of the industrial districts of Norilsk. In the course of the study, the following methods were used: organoleptic, visual, methods for determining water transparency, titrimetric analysis, etc. Heavy metal ions and sulphate ions were not detected in the thawed snow, so no industrial gas pollution was noted in the residential area. Most of the particulate contamination was caused by slagging of roads to improve vehicle traction.

For the first time, the genetic diversity of farm populations of domesticated Nenets reindeer bred in Taimyr has been studied to form their DNA bank. A comparative analysis of the genetic characteristics of the Nenets reindeer populations bred in other regions (Nenets and Yamalo-Nenets Autonomous District, the Murmansk Region, and the Komi Republic) has been performed using DNA markers. The genetic diversity markers - microsatellites have been used as DNA markers in the study. As a result of the research, it has been revealed that this group of domesticated reindeer has a low level of genetic polymorphism and diversity. A comparative analysis of this population with the regional ones from the Nenets and Yamalo-Nenets Autonomous District, the Murmansk Region, and the Komi Republic has revealed genetic ties with reindeer bred in the Komi Republic and Yamalo-Nenets Autonomous District. A low level of both allelic and genetic diversity may further negatively affect the animals’ adaptation to environmental conditions.

The paper describes the results of studying the creep of wood-polymer composites under load. The results of long-term testing wood composites based on thermoplastic and thermoset polymers are given. It has been established that empirical dependencies in the form of elementary functions are suitable to describe the composite deformation. The parameters of these functions are experimentally determined.