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- Title
The Effect of Accidental Spill of Diesel Fuel in Noril'sk on Hydrocarbon Concentrations and Composition in Bottom Sediments.
- Authors
Nemirovskaya, I. A.; Glyaznetsova, Yu. S.
- Abstract
Studying bottom sediments of the Norilsk–Pyasina water system (July 29–August 13, 2020) showed that water pollution caused by an accidental spill at HPP-3 PJSC "MMC "Norilsk Nickel" on May 29, 2020, had propagated downstream the river over 31 km and had not reached Lake Pyasino and, the more so, the Kara Sea. The mean concentration of aliphatic hydrocarbons in sediments decreased in the series, µg/g: the mouth of the Ambarnaya R. (1914, σ = 3428) > the Bezymyannyi Cr.–the Daldykan R.–the Ambarnaya R. (1000, σ = 1351) > the Pyasina R. (27, σ = 17) > Lake Pyasino (15, σ = 6). The composition of aliphatic hydrocarbons in bottom sediments did not correspond to the hydrocarbon composition of diesel fuel even in the most heavily polluted regions because of transformations of alkanes. The concentrations of polycyclic aromatic hydrocarbons also rapidly decreased with the distance from the pollution source (from 3865 to 56 ng/g). At the same time, naphthalene (indicator of petroleum origin of hydrocarbons) accounted for 46–53% of the total. Naphthalene dominated in precipitation not only in the Ambarnaya and Daldykan rivers, but also the Norilka R. and the mouth of the Pyasina R., which may be due to other sources of soil pollution (erosion of coastal deposits, spent barrels of petroleum, oil, and lubricants, water transport, etc).
- Subjects
COMPOSITION of sediments; FOSSIL fuels; POLYCYCLIC aromatic hydrocarbons; ALIPHATIC hydrocarbons; RIVER pollution; DIESEL fuels; SOIL pollution
- Publication
Water Resources, 2022, Vol 49, Issue 6, p1027
- ISSN
0097-8078
- Publication type
Article
- DOI
10.1134/S0097807822060100