Content and Distribution of Lead, Cadmium, Arsenic, 137Cs, and 90Sr in Sod-Podzolic Soils and Plants of Agrocenoses
摘要
The results of monitoring sandy loam and loamy sod-podzolic soils of reference agricultural areas of Ivanovo region, conducted in 2012 and 2022 to establish the level of soil fertility by agrochemical indicators, the ecotoxicological state by gross arsenic content and mobile forms of cadmium and lead, and the specific activity of 137Cs and 90Sr are presented. According to the density of contamination of the arable soil horizon with 137Cs and 90Sr, the level of the ecological situation was determined, which allowed us to refer all sites to uncontaminated territories. The background gross and mobile concentrations of metals and radionuclides in soils did not exceed the permissible levels. Correlation analysis determined the influence of some agrochemical properties of soils on the content and distribution of metals and radionuclides in soil. All plant products grown fully met veterinary standards and hygienic requirements for limiting the content of cadmium, lead, arsenic, 137Cs, and 90Sr in plant fodder (green mass, straw, and forage grain) and food products (grain). The calculated linear correlation coefficients between the content of metals and the specific activities of 137Cs and 90Sr in soils and plants revealed the strength of conjugation and the nature of dependencies. The coefficients of accumulation of metals and radionuclides by plant products of crops were calculated, and their comparative analysis was carried out.