Basic valence mercury forms in gas-vapor mixtures, in thermal waters and in atmospheric air

Авторы: Alekhin Yu V., Fiaizullina R.V.
Журнал: Experiment in GeoSciences
Том: 23
Номер: 1
Год издания: 2017
Первая страница: 71
Последняя страница: 75
Аннотация: The report is devoted to the discussion of mercury transport in gas-hydrothermal (two-phase) fluid systems. The estimation of the integrated flux density of mercury in the zone of unloading of the Kamchatka term is given by the example of two objects: the caldera of volcano Uzon and the Apapel Springs. On the basis of detailed studies of the Hg°(g)−H2O system, it was shown that at low temperatures and the standard volatility of oxygen in the atmosphere (in natural settings), not Hg0 pairs but mercury oxide (HgO) dominate. In the liquid phase, mercury concentrations are ensured by the solubility of montroidite, determined by the hydroxyl complex such as Hg(OH)2. A study of the solubility of mercury oxide under the univariant equilibrium of Hg(g)−HgO(s)−H2O under oxidizing and reducing conditions has shown that in most natural environments (Kamchatka's terms, atmosphere) at low temperatures, the forms of Hg(II) dominate and only in reducing conditions and temperatures of more than 100−120°C, Hg° predominates in the gas and liquid phases.
Добавил в систему: Фяйзуллина Рената Вилевна

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