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Sorption of Water-Soluble Organic Matter on Kaolinite and Muscovite under Conditions of a Laboratory Model Experimentстатья
- Авторы: Kolchanova K.A., Tolpeshta I.I., Izosimova Yu G.
- Журнал: Moscow University Soil Science Bulletin
- Том: 80
- Номер: 1
- Год издания: 2025
- Издательство: Allerton Press Inc.
- Местоположение издательства: United States
- Первая страница: 8
- Последняя страница: 18
- DOI: 10.3103/s0147687424700741
- Аннотация: The regularities of sorption of water-soluble organic matter (WSOM) in the composition of waterextracts, obtained from the samples of the horizon H of peaty–podzolic–gleyic soil on kaolinite and muscovite, were studied. The extracts contained different amount of water-soluble Corg, mainly with molecularweights about 20 kDa, represented by mainly hydrophilic compounds, but with different ratios of hydrophobic and hydrophilic components. It was established that the sorption of WSOM components under experimental conditions depends on the concentration of Corg in the extracts, on the ratio of hydrophilic and hydrophobic components, on the ratio of mineral (g): water extract (WE) (mL) and is almost independent of pH.Hydrophobic components of WSOM and aromatic compounds are sorbed to a greater extent on the surfaceof kaolinite as compared with muscovite. The observed decrease in the sorption of Corg on both minerals whenrecalculating the sorption per unit area of the external surface in the experiments with a ratio of mineral (g):WE (mL) of 1 : 50 as compared with the ratio of 1 : 10 can indicate both a heterogeneity of the sorption centerson the surface of minerals and competition for these centers between the components of WSOM of the studied water extracts. No significant changes were detected in the curves of molecular weight distribution of theWSOM components after the interaction with kaolinite and muscovite.
- Добавил в систему: Изосимова Юлия Геннадьевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Акт_экспертизы_Колчанова_и_др_2024_d5T9Dgk.pdf | Акт_экспертизы_Колчанова_и_др_2024_d5T9Dgk.pdf | 339,6 КБ | 12 мая 2025 [ulashka_86@mail.ru] | |
| 2. | Kolchanova_et_al_2005.pdf | Kolchanova_et_al_2005.pdf | 674,9 КБ | 12 мая 2025 [ulashka_86@mail.ru] |