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<p>In June 2023, the Kakhovka Hydroelectric Power Plant’s dam was destroyed by Russian troops, leaving large areas downstream flooded and an area upstream dried-up. Therefore, the objectives of this screening-level study were (i) to determine the content of organic pollutants in the alluvial soils that have dried-up and soils that are above the old water level, and (ii) to determine the pattern of accumulation of organic pollutants in the dried-up zone. The alluvial soils within the city of Zaporizhzhia were sampled from the superficial, 30&#xa0;cm, layer in six areas in the dried-up zone, drained after the dam’s breach, and also in six areas in the floodplain above the former water level. The composition of organic pollutants was determined using the method of gas chromatography–mass spectrometry. The distribution of organic pollutants in the soils was analyzed based on the hygrophilicity index that we proposed, which was calculated as a ratio of the amount of compound in the soils of the dried-up zone to its amount in the dried-up zone and in unflooded areas together. We identified 155 organic compounds, 24 of which are hazardous toxicants that contaminate the environment. Those compounds were represented by polycyclic aromatic hydrocarbons, acid esters, aromatic heterocycles, and other compounds. This ecological pollution jeopardizes the urban landscapes of Zaporizhzhia and other setllemens on the banks of the former Kahovka Reservoir and the health of people in southern Ukraine.</p>

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Distribution of organic pollutants in Alluvial soils as a result of the destruction of the Kahovka Dam (Ukraine)

  • 期刊论文

  • 发表日期：

    2026年6月2日

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  • Vitalii Palchykov,
  • Volodymyr Yakovenko,
  • Olexandra Boyko,
  • Maksym Maksymenko,
  • Viktor Brygadyrenko

摘要

In June 2023, the Kakhovka Hydroelectric Power Plant’s dam was destroyed by Russian troops, leaving large areas downstream flooded and an area upstream dried-up. Therefore, the objectives of this screening-level study were (i) to determine the content of organic pollutants in the alluvial soils that have dried-up and soils that are above the old water level, and (ii) to determine the pattern of accumulation of organic pollutants in the dried-up zone. The alluvial soils within the city of Zaporizhzhia were sampled from the superficial, 30 cm, layer in six areas in the dried-up zone, drained after the dam’s breach, and also in six areas in the floodplain above the former water level. The composition of organic pollutants was determined using the method of gas chromatography–mass spectrometry. The distribution of organic pollutants in the soils was analyzed based on the hygrophilicity index that we proposed, which was calculated as a ratio of the amount of compound in the soils of the dried-up zone to its amount in the dried-up zone and in unflooded areas together. We identified 155 organic compounds, 24 of which are hazardous toxicants that contaminate the environment. Those compounds were represented by polycyclic aromatic hydrocarbons, acid esters, aromatic heterocycles, and other compounds. This ecological pollution jeopardizes the urban landscapes of Zaporizhzhia and other setllemens on the banks of the former Kahovka Reservoir and the health of people in southern Ukraine.