Известия Томского политехнического университета: Инжиниринг георесурсов (Apr 2022)

TOXIC ELEMENTS IN NATURAL WATERS OF THE SEVASTOPOL URBAN AGGLOMERATION: DISTRIBUTION, BACKGROUND, ANOMALIES

  • Dmitry A. Novikov,
  • Anatoliy V. Chernykh,
  • Albina A. Khvacshevskaya,
  • Anastasia A. Maksimova,
  • Anton S. Derkachev,
  • Fedor F. Dultsev,
  • Larisa A. Nichkova,
  • Galina A. Sigora,
  • Tamara Yu. Homenko,
  • Timur A. Yahin

DOI
https://doi.org/10.18799/24131830/2022/4/3503
Journal volume & issue
Vol. 333, no. 4
pp. 79 – 92

Abstract

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The relevance. Prior to the present study on the natural waters of the Sevastopol urban agglomeration, there was no relevant information on the distribution of a wide range of highly toxic elements. The aim of the research is to establish the characteristics of the hydrogeochemical background and study the distribution of highly toxic chemical elements in the drinking water supply of the population of the Sevastopol urban agglomeration based on current information about their chemical composition obtained by modern methods of analysis. Methods. Laboratory study of the chemical composition by titrimetry, ion chromatography, inductively coupled plasma mass spectrometry was carried out at the Problem Research Laboratory of Hydrogeochemistry of the TPU School of Natural Resources. The assessment of the toxicological characteristics of waters was carried out using the current regulatory documents: SanPiN 1.2.3685-21, GOST R 51232-98, SanPiN 2.1.3684-21, and the recommendations of the World Health Organization. Results. The hydrogeochemical background of the distribution of highly toxic chemical elements in the natural water of the Sevastopol urban agglomeration are established. The concentration of highly toxic elements (V, Cr, Cu, Zn, Mo, Cd, Pb and Bi) does not exceed the threshold limit value. Several objects are characterized by exceeding the threshold limit value for Fe, Mn, Co, Ni and Tl. The waters of the Kolkhoznoe village have the most unfavorable characteristics. Almost throughout the entire territory of the Kheracleian Peninsula, high concentrations of uranium and arsenic were established. The droughts of 2018–2020 had a huge impact on the deterioration of the quality characteristics of natural waters, which led to the increase in the concentrations of almost all microcomponents not only in surface waters, but also in groundwater (including wells and springs). Identification of the role of natural and anthropogenic factors in formation of the hydrogeochemical field of exploited aquifers on the territory of the Sevastopol urban agglomeration requires the continuation of monitoring.

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