ИСТИНА

In the Environmental Safety Strategy of the Russian Federation for the period up to 2025, approved by. By Decree of the President of the Russian Federation No. 176 dated April 19, 2017, it is noted that the state of the environment in the territory of the Russian Federation is assessed as unfavorable in terms of environmental parameters. One of the most polluted places, as a result of modern human activities, is located on the territory of the urban district of Usolye-Sibirskoye, Irkutsk region, where at present there is a significant amount of mercury-containing waste and mercury-contaminated soils. One of the ways to reduce the negative impact on the environment of such areas, provided that large areas are subject to insignificant mercury pollution (up to 100 times the maximum permissible concentration (MPC)), can be stabilization of mercury in situ. The paper presents the data obtained on the content of heavy metals in a soil sample from the territory of the urban district of Usolye-Sibirskoye (the concentration of chromium, nickel and copper is exceeded by more than 10 times, and mercury by more than 100 times). It was found that the coefficient of mercury translocation in plants, white mustard (Sinapis alba) and creeping clover (Trifolium repens), decreases by 3 times when gibberellic and auxinic acids are used as chemical additives in the soil. The results obtained indicate the possibility of their use as auxiliary components in soil remediation to achieve the permissible level of mercury content established by the sanitary and epidemiological supervision authorities in relation to human health and other bodies in order to protect flora and fauna, preserve natural ecosystems