A thermodynamic study of microelement influence on the nitrogen and oxygen activity in soil
| Autor: | E. S. Gogol, N. V. Butorina, A. K. Podshivalova |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 548:052043 |
| ISSN: | 1755-1315 1755-1307 |
| DOI: | 10.1088/1755-1315/548/5/052043 |
| Popis: | Microelement influence on the activity of the most important biogenic elements (oxygen and nitrogen) have been studied through modelling of physical and chemical processes. The obtained results lead to the conclusion that sandy soils do not influence chemical potentials of oxygen and nitrogen due to the silicon dioxide inertness. Clay soils increase oxygen activity and reduce nitrogen activity; at the same time, the influence is smoothed by the process of poorly soluble gibbsite mineral formation as a result of increased aluminium oxide content in the soils. The oxygen chemical activity increases in the presence of copper(II) ions in sandy soils. Iron(II) ions have a negative impact on the oxygen chemical activity; however, they in-crease the nitrogen activity in sandy and clay soils. The oxidation state of a microelement included in micronutrient fertilizers substantially influences the biogenic element activity. Iron(III) ions used as a component of micronutrient fertilizers have an advantage over iron(II) ions, as they increase the nitrogen activity to a greater extent. |
| Databáze: | OpenAIRE |
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