The state of soil pollution by agricultural and industrial toxicants in the territory of the Republic of Uzbekistan in 2019
Observations of the soil pollution state in 2019 were carried out at 261 sampling sites in the agricultural territories of 12 regions of the Republic of Uzbekistan and in the Republic of Karakalpakstan, as well as in 90 sites in the vicinity of the cities of Andijan, Bekabad and Namangan.
The main quality criteria are the values of maximum permissible concentrations (MPC) of pollutants in the soil.
According to the results of analyzing the soil samples taken from agricultural lands in the territory of Uzhydromet’s activity in 2019, the average level of pollution by residual amounts (RA) of the sum of DDT was 0.57 MPC. The highest level of soil contamination by RA of the sum of DDT was observed in Andijan region – 1.55 MPC.
Weighted average concentrations of RA of the sum of DDT exceeding 1 MPC were also registered in Ferghana region – 1.32 MPC.
Weighted average concentrations of RA of the sum of DDT exceeding 1 MPC were also registered in Fergana region – 1.32 MPC.
The average level of soil contamination by RA of the sum of HCCH was less than 0.01 MPC. No cases of exceeding the MPC were observed.
The soils of Navoi, Syrdarya and Tashkent regions were examined for the content of insecticides, herbicides and defoliants. Residual amounts of phosalone, phosphamide, dalapone and treflan in the soils of the surveyed regions are absent or found in trace amounts.
The survey of soils for the content of industrial toxicants shows that the priority pollutants for the city of Andijan are the acid-soluble form of copper, arsenic and sulfates; for the city of Bekabad – ammonia nitrogen, oil products and sulfates; for the city of Namangan – acid-soluble forms of copper and zinc, oil products and sulfates.
The average values of the content of nitrate nitrogen, active forms of copper, lead and zinc, arsenic and mercury in the surveyed soils around the cities of Andijan, Bekabad and Namangan do not exceed the MPC. No extremely high pollution was observed.