DETERMINATION OF HEAVY METALS IN WATER SAMPLES TAKEN FROM THE SHIKH AREA OF THE CASPIAN SEA USING ICP-MS (7500CX) DEVICE

Water samples were taken from the Shikh shore of the Caspian Sea to conduct the research. In the marine water samples taken from the area, heavy metals were identified using the Agilent 7500 Series ICP-MS device. The analyzes were performed in the Complex Analytical Research Laboratory of the National Department of Environmental Monitoring

CAUSES OF CORROSION OF METALS AND SEVERAL WAYS TO PREVENT CORROSION OF METALS

Causes of corrosion of liquid steel-bearing steel products under the influence of external and internal environment in industrial and public areas today. Methods of prevention of corrosion of corrosive metals by today's technologies. Various methods have been used to address the main problems of the industrial use of gold, steel and silver metals, the causes of corrosion of metals

PHYTOCHEMICAL COMPOSITION OF PHYSALIS ALKEKENGI AND PHYSALIS ANGULATA PLANTS

In Uzbekistan, it is necessary to expand the sources of raw materials for our pharmaceutical industry and thus strengthen the study of plant species to increase our domestic income. Therefore, this article summarizes the phyto chemical composition and physiological activity of the plants Physalis angulata and Physalis alkekengi

SYNTHESIS OF A NEW DERIVATIVE OF DIPHENYLCARBAZIDEBASEDON N1', N1'-DIDEOXYMETHYLCHLORAZONE ESTER AND ITS STUDY AS AN ENVIRONMENTALLY EFFECTIVE INHIBITOR

Based on N1 ', N1'-dideoxymethylchlororazone ether, we have synthesized for the first time a new, previously unknown in the literature derivative of diphenylcarbazide: N1-(N1', N1'- didesoxymethyl) azone –N2–(N1 ', N1'dideoxy-methyl) azone –N4 -(N1 ', N1'-dideoxymethyl) azone-N5-(N1', N1'-dideoxymethyl) -azondiphenylcarbazide (compound B-2). During research, it was found that the inhibitory efficacy of compound B-2 even at its low concentrations of 0.25; 0.5; 1.0 mg / L is 99.92-100% and it is an environmentally efficient corrosion inhibitor.

THE STUDY OF THE COMPLEXATION OF COPPER (II) WITH BIS [3-(CHLOROPHENYLAZOPENTADIENE-2,4)] ETHYLENEDIIMINE

In this work, based on 3-(chlorophenylazopentadiene-2,4), a new bis [3-(fluorophenylazopentadiene-2,4)] ethylenediimine reagent was synthesized and its structure was established. The complex formation of copper (II) with the synthesized reagent was studied by spectrophotometric method. Based on experimental data, it was found that the yield of the CuR complex is maximum at pH 4, and the optimum wavelength is 437 nm.

STUDY OF SORBTION OF COPPOLYMER COPY (II) IONS MADE ON THE BASIS OF ACRYLONITRYL AND HEXAGIDRO 1,3,5 -TRIYACRYLTRIAZINE

The scientific and theoretical basis of sorption of copper (II) ions by the newly obtained complex was studied in order to search for possible areas of practical application. The complexite with hydrazidine groups, ie the porous copolymer of acrylonitrile, is obtained by amine hydroxylamine with hexahydro 1,3,5-triacryliltriazine.