Development of Environmentally Safe Concentration of Silver Content in Soils of Different Resistance to Chemical Pollution

To manage the quality of urban soils effectively, it is necessary to develop maximum permissible concentrations of various pollutants in the soil. This list includes pollution with heavy metals, such as silver (Ag). At the moment, neither in Russia nor in the world, maximum permissible concentrations of silver in the soil have been developed. Therefore, it is relevant to establish environmentally safe concentrations of silver in soils with different resistance to chemical pollution, which can later be used in soil pollution normalizingNormalizing. The work objective is to develop environmentally safe concentrations of silver in soils with different resistance to chemical pollution. The following are selected as research objects for the development of environmentally safe concentrations of silver Haplic Chernozems CalcicHaplic Chernozems Calcic, Haplic Arenosols Eutric,Haplic Arenosols Eutric and Haplic Cambisols EutricHaplic Cambisols Eutric. Environmentally safe concentrations of Ag in soils were developed based on the degree of violation of ecosystem functions of the soil under the influence of silver pollution. Quantitative guidelines for the development of these standards are proposed. The environmentally safe concentration of Ag in Haplic Chernozems CalcicHaplic Chernozems Calcic, Haplic Arenosols EutricHaplic Arenosols Eutric, and Haplic Cambisols EutricHaplic Cambisols Eutric is 4.4, 0.9, and 0.8 mg of Ag/kg of soil. The developed environmentally safe concentrations of Ag can also be used to regulate the quality of similar soils in other regions of the world.