Tabiiy fanlar

ОСНОВНЫЕ ИСТОЧНИКИ ФОРМИРОВАНИЯ И ИЗМЕНЕНИЯ УГЛЕКИСЛОГО ГАЗА В ПОДЗЕМНЫХ ВОДАХ

groundwater, carbon dioxide, carbonates, dissolved minerals, mantle carbon, carbonic acid, fluids, leaching, sources of formation.

Authors

  • Шухрат ЮСУПОВ Профессор Ташкентская медицинская академия, Uzbekistan
  • Людмила ШИН, Независимый исследователь Ташкенский государственный технический университет, Uzbekistan
  • Отабек РАХИМБАЕВ Базовый докторант Ташкенский государственный технический университет, Uzbekistan

The paper examines the main regularities governing the formation of the chemical and gas composition of groundwater under the influence of geological, hydrogeological, climatic, hydrogeodynamic, biological, and thermodynamic factors. The diversity of carbon dioxide sources is highlighted, and a brief review of groundwater CO2 monitoring studies related to seismic activity is presented. It is shown that the solubility of carbon dioxide is controlled by pressure, temperature, and the chemical composition of water, increasing with rising pressure and decreasing with increasing temperature, while dissolved mineral salts contribute to the stabilization of the pH of aqueous solutions. It is established that organic matter represents one of the principal sources of carbon dioxide in sedimentary deposits, a significant portion of which participates in reactions leading to the formation of carbonate and bicarbonate compounds that determine the hydrogeochemical characteristics of groundwater.