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Magnetic stability of power-plant fly ash in different soil solutionsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Дата последнего поиска статьи во внешних источниках: 15 августа 2019 г.
- Авторы: Kapička A., Jordanova N., Petrovský E., Ustjak S.
- Журнал: Physics and Chemistry of the Earth, Part A
- Том: 25
- Номер: 5
- Год издания: 2000
- Первая страница: 431
- Последняя страница: 436
- DOI: 10.1016/s1464-1895(00)00067-3
- Аннотация: Temporal stability of magnetic parameters of anthropogenic ferrimagnetics in model soil conditions was studied. Fly ash from a power plant was used as original contaminant material, while soil reactive medium was modeled by different soil solutions. Changes in mass-specific magnetic susceptibility (chi), percentage frequency dependent magnetic susceptibility (chi(FD)%), hysteresis parameters and thermomagnetic curves were measured for samples which underwent different leaching time periods. Virtually constant magnetic susceptibility values were obtained, independently on the soil medium (acid, neutral). On the other hand, the original highly non-stoichiometric maghemite phase rapidly transformed to stable magnetite. In some cases (model of free-draining soils) further decrease of Curie temperature (T-c) to 550-560 degrees C is observed. (C) 2000 Elsevier Science Ltd. All rights reserved.
- Добавил в систему: Устяк Сергей Антонович