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CNAA / Theses / 2012 / May /

Investigation of self-purification processes occurring in natural waters with participation of different forms of migration of iron and copper


Author: Borodaev Ruslan
Degree:doctor of chemistry
Speciality: 11.00.11 - Environmental Protection and Rational Utilization of Natural Resources
Year:2012
Scientific adviser: Gheorghe Duca
doctor habilitat, professor, Moldova State University
Institution: Moldova State University
Scientific council: DH 30-11.00.11-25.12.03
Moldova State University

Status

The thesis was presented on the 14 May, 2012
Approved by NCAA on the 5 July, 2012

Abstract

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Keywords

migration forms of metals, self-purification processes, inhibition capacity, self- purification by radicals, radicals of organic and inorganic origin.

Summary

Keywords: migration forms of metals, self-purification processes, inhibition capacity, self- purification by radicals, radicals of organic and inorganic origin.

The goals and objectives of the work: The goal of the work is to study the processes of natural water self-purification in the presence of metals of transition valence. The problems under investigation presented in the work are related to a promising science branch of environmental protection that metal chemistry in natural water, which accounts the complex contribution of hydrological, biogeochemical and mathematical/statistical aspects to the regularities of migration of metals with transitional valence, and considers the self-purification potential of water ecosystems in the search for methods of preserving the quality of water in basins.

Scientific novelty and originality of investigation emerge from application of kinetic methods for identification of dissolved forms of metals causing inhibition of radical processes of self-purification through application of an innovative procedure of their removal from natural waters, as well as from identification of priority abiotic factors influencing the seasonal dynamics of metals migration.

Theoretical and practical significance of the work is determined by the possibility to apply the developed methods for the removal of dissolved forms of metals from natural water samples for further analysis of their structure. The identified tight correlation between abiotic factors of the environment and dissolved-colloid forms of iron, that corresponds to either a linear or a second degree polynomial relationship, allowed the development of a program of quantification of the iron content at certain air temperature conditions.