THE STUDY OF PHYTOTOXICITY OF SALTCONTAINING RAW MATERIALS OF THE SMALL ARAL SEA AS A COMPONENT OF COSMETIC PRODUCTS
The paper considers the results of studies on phytotoxicity of various types of salts selected from the bottom of the Small Aral sea -a potential raw material for cosmetic products for test plants. The quality of raw materials is of great importance for the production of cosmetic products and must comply with regulatory regulations. The aim of the research was to study the phytotoxicity of salt-containing raw materials of the Small Aral sea basin for test plants. Agricultural crops Avena sativa L., Raphanus sativus Pers and Phaséolus vulgáris L. served as tested plant species. Vermiculite was used as a substrate for experiments. As watering, 1%, 5%, 10% water solutions of 25 salt samples were used. It is established that at the bottom of the dried sea there are salt deposits of different chemical compositions, equally dispersed in the northern and southern basins of the dried bottom. The presence of three types of salt deposits significantly differing in chemical composition was established: A - the most phytotoxic salt samples combining a high concentration of sulfate ions (64,3±1,2% - 68,7±1,4%) and the average concentration of chloride ions (16.6±1.5%). Their 1% concentration is highly toxic to plants, and 5% and 10% are lethal to Raphanus sativus Pers., Avena. sativa L., Phaseolus. vulgáris L.; B -- second degree of phytotoxicity of the samples the group of salts with a high content of chloride (68,3±2,4% - 74,3±2,4%,) and low content of sulphate ions (1, 9 ±0,0% - 2,1±0,0%). 1% of the concentration of these salts stimulate seed germination and other morphometric indicators of the above species of plants, 5% cause mild oppression, and 10% of the concentration is lethal; C - slightly phytotoxic salt samples with average chloride content (28,3±2,4% - 384,3±21,4%) and low in sulfate ions (2,8±0,0% - 3,1±0,0%). 1 and 5% of the concentration of these salts stimulate growth processes and only 10% of the concentration cause inhibition of growth processes in the above plant species.