Vol. 2 Issue 2

Archives Journal Chemical Bulletin Vol. 2 Issue 2

THE ELEMENT WITH CONSTANT PHASE SHIFT IN GALVANODYNAMIC MODE

Abstract
The purpose of this study is to study the behavior of the boundary perfectly polarized electrode – solid electrolyte in the presence of a constant phase shift impedance (CPS) in the galvanic-dynamic mode.
Analytical expressions of the dependence of the potential of the interface of an ideally polarizable electrode-solid electrolyte on time in the galvanodynamic mode in 2 cases are obtained: 1) in the case of a full equivalent electrical circuit; 2) in the case of a reduced equivalent electrical circuit. The complete coincidence of analytical expressions for the potential of the interphase boundary in both cases is shown.
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HEAVY METALS IN THE ENVIRONMENT AND THEIR TRANSFORMATION

Abstract
The information about the presence of heavy metals in the environment was summarized. It is noted that most of them are extremely toxic, even in residues. According to the basis from various literary sources, data are presented on the properties of heavy metals to influence physical and chemical and biological interfacial interactions. It is shown that soil minerals play an important role in accelerating the abiotic processes of polymerization and polycondensation of organic compounds. At the same time, oxides of aluminum, iron and manganese are the most reactive catalysts for the conversion of many organic compounds due to their high oxidation potentials, high specific surface area and surface reactivity. Heavy metals can enter the body during breathing. When entering it heavy metals can cause various health damage including cancer, liver and kidney diseases, abortions, neurological and visual damage, a negative effect on the immune system, allergies, cardiovascular diseases and anemia. An important way for heavy metals to enter the body is through drinking water. The third way is through food with a high content of heavy metals. It is obvious that there is the urgent need to reduce the mass of heavy metals entering the environment, in water bodies with sewage in particular.
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DETERMINATION OF MERCURY IN WINE SAMPLES USING OF SILICA, MODIFIED BY POLYHEXAMETHYLENUGANIDINE

Abstract
The aim of the work was the development of a sorption-atomic-absorption method for determining mercury after its separation from wine samples in the form of a complex with unithiol on modified polyhexamethylene guanidine silica. The sorption-atomic absorption determination of mercury in wines was performed using the cold-steam method. The developed method is characterized by a low detection limit and a sufficiently high accuracy and satisfactory reproducibility.
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