STUDY OF THE CONTENT OF TOXICANTS IN FISH ORGANS AND TISSUES

An ecological assessment of the content of antimony and arsenic in the organs and tissues of fish caught from the Zarafshan River is given. The relevance of the determination of toxic elements is assessed, despite the fact that their content in fish meat is negligible and requires the use of highly sensitive physicochemical methods for determination. The possibility of using the proposed method for determining toxic elements in diagnostics and in the environmental assessment of the region under study, as well as processing these fish for canned food, is shown. The method and materials for sampling fish according to GOST 26929 “Raw materials and food products” are presented. The method of atomic absorption detection of toxic elements was used on Spectr-1 and Saturn instruments equipped with electrothermal atomizers, with the help of which elements were determined in the form of hydrides and in aqueous solutions. Hydrides are fed into the furnace through a jet, and aqueous solutions are introduced using a microdoser. Quantitative determination of toxic elements was carried out by a calibrated (graded) graphical method. The danger of the presence of arsenic and antimony in the meat of fish selected for the experiment: marinka, carp and silver carp was assessed.