DETERMINATION OF CADMIUM BY THE METHOD OF ATOM-ASSORPTION AND ATOM-EMISSION SPECTROMETERS IN LOCAL WHEAT VARIETY

Iron deficiency leads to a weakening of plant growth and a decrease in their yield. A promising solution to this problem is the use of iron nanopowders, iron oxides as biostimulants for the growth of agricultural plants. However, the special properties of nanoparticles can enhance the mechanisms associated with toxic effects on living organisms and lead to microelementoses. The response of plants to the effect of iron is highly variable and depends on their genotype and species. Literature data on the effect of finely dispersed iron particles on the elemental composition of a plant of the species Triticum vulgare Vill (common wheat) are insufficient, in addition, the interaction of these particles with natural sorbents - humic acids, which control the bioavailability and transport of elements in natural objects, has not been practically studied. The article presents data on the content of toxic elements (Cd) in the aerial parts of Triticum vulgare Vill wheat plants grown in the soil under a single invasive effect of aqueous solutions of spherical nanoparticles of iron Fe0 (diameter 80 ± 5 nm), magnetite FeO (width 50– 80 nm and height 4–10 nm), ionic forms of di- and trivalent iron sulfate with the addition of humic acids isolated from brown coal of the Tyulganskoe deposit. When studying the dynamics of changes in the content of toxic elements, it was found that under the influence of iron and magnetite nanoparticles, the process of replacing more toxic mercury with less toxic cadmium is observed at a constant total amount, the use of ferric sulfate with a concentration of 0.0001 g/l for a single dose of -leaf of wheat Triticum vulgare Vill leads to the best result in reducing toxic elements (cadmium) in the aerial part of the plant