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Chemical forms of radioactive strontium interaction with organic matter of different soil typesстатья
Дата последнего поиска статьи во внешних источниках: 20 апреля 2016 г.
- Авторы: Fedorkova M.V., Pakhnenko E.P., Sanzharova N.I.
- Журнал: Moscow University Soil Science Bulletin
- Том: 67
- Номер: 3
- Год издания: 2012
- Издательство: Allerton Press Inc.
- Местоположение издательства: United States
- Первая страница: 133
- Последняя страница: 136
- DOI: 10.3103/S0147687412030027
- Аннотация: Abstract: Under model experiment conditions, the mechanisms of chemical interaction of 90Sr with soil organic matter were established. The radionuclide was introduced in soil examples of main soil-types widespread on the European territory of the Russian Federation. It was found that from 40 to 60% of the radionuclide extracted in exchangeable chemical form. In addition, fulvic acids (FA) (fractions I and Ia) absorbed a significant amount of the radionuclide: 25–35%. It was shown that 90Sr is available for forming chemical compounds with nonspecific organic matter with molecular weight (M) ranging from 180 to 500 g/mol, without reference to soil type. An essential part of radioactive strontium, 18–24% (from introduced 90Sr), which was associated with high-molecular fraction (M > 500 g/mol), was detected in chernozems, chestnut soil, and peat soil. In soddy-podzolic soil and light-gray forest soil, it was found mostly (33–34%) with mineral compounds (M < 180 g/mol). Keywords: 90Sr radionuclide soil types organic matter molecular weight chemical compound chemical form fulvic acids
- Добавил в систему: Пахненко (Дурынина) Екатерина Петровна