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Speciation of Chemical Elements in the Waters of the Herberz Historical Mine, Karelia, Russia: Thermodynamic Calculations and Fractionationстатья Исследовательская статья
- Авторы: Sidkina E.S., Toropov A.S., Konyshev A.A.
- Журнал: Geochemistry International
- Том: 62
- Номер: 11
- Год издания: 2024
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1200
- Последняя страница: 1218
- DOI: 10.1134/s0016702924700678
- Аннотация: The speciation of chemical elements in the waters and its dependence on the dissolved organicmatter were studied by a complex of methods, involving thermodynamic calculations and experimental frac-tionation. The waters were studied at the abandoned and flooded Herberz Mine in the Pitkäranta district,Karelia, Russia. The regional natural waters are typically highly humified. In combination with the uniquemetallogeny of the rocks, this makes the mine suitable for solving the formulated problems. The eastern shaftof the Herberz Mine was sampled to a depth of 20 m to trance the changes induced by changes in the redoxconditions. One of the geochemical characteristics of the waters is their relatively high concentrations of traceelements and a low salinity (TDS, total dissolved solids). All water samples from the Herberz Mine containelevated concentrations of Zn, Fe, Mn, Cu, Ni, As, and W. Experimental fractionation and thermodynamicsimulations of the speciation of chemical elements led us to identify metals whose accumulation most stronglydepends on organic matter (OM). Both methods have demonstrated that U, Th, Cu, Ni, and Y show a highchemical affinity to OM. Metals (Cd and Fe) weakly bonded to the functional groups of natural OM, withthe predominance of electrostatic bonding and a higher proportion of carboxyl bonds, are most susceptibleto transformations with changes in geochemical conditions.
- Добавил в систему: Торопов Андрей Сергеевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | GEOI1200-2-20.pdf | 3,8 МБ | 4 февраля 2025 [torop990] |