Abstract

Our article presents the study of the content of highly hazardous and moderately hazardous chemical elements in soils, plants, beef and cow milk. Their average amount is shown. A safe level of the concentration of these chemical elements in the links of the chain “soil - plant - animal – meat and dairy products” of the Republic of Tatarstan is revealed. The coefficients of biological absorption of chemical elements in the links of the system are calculated. An increase in the coefficient of accumulation of Zn in plants and As in milk and meat was found. Further research for ranking territories according to the actual content of chemical elements in environmental objects is required.

Highlights

  • Industry is the most important part of the national economy and it is very susceptible to technological innovation

  • There are two groups of metals found in nature depending on their density or specific atomic mass: heavy metals (HM) and light metals (LM)

  • The objects of the study were selected in the Republic of Tatarstan: gray forest soil (n = 107), plants (n = 48), cow milk (n = 21), beef (n = 15)

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Summary

Introduction

Industry is the most important part of the national economy and it is very susceptible to technological innovation. Industry develops very fast and creates the basis for a better quality of life for people. Many problems come due the expansion and formation of new industries and they require different approaches and solutions. Environmental pollution by heavy metals is one of the challenges. There are two groups of metals found in nature depending on their density or specific atomic mass: heavy metals (HM) and light metals (LM). Heavy metals have specific gravity more than 5 g / cm and include iron, lead, copper, zinc, mercury, cadmium. Well-known light metals include sodium, magnesium and potassium; their specific gravity is less 5 g / cm

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