Инд. авторы:	Lazareva E.V., Ponomarchuk V.A., Zhmodik S.M., Kirichenko I.S., Pyryaev A.N, Moroz T.N.
Заглавие:	Specific of Stable Carbon Isotopes Determination in Organic-Bearing Sediments
Библ. ссылка:	Lazareva E.V., Ponomarchuk V.A., Zhmodik S.M., Kirichenko I.S., Pyryaev A.N, Moroz T.N. Specific of Stable Carbon Isotopes Determination in Organic-Bearing Sediments // Журнал Сибирского федерального университета. Серия: Химия. - 2021. - Vol.14. - Iss. 3. - P.418-432. - ISSN 1998-2836.
Внешние системы:	DOI: 10.17516/1998-2836-0251; WoS: 000704316000014;
Реферат:	eng: The study of the carbon isotopic composition in organic-bearing bottom sediments of the thermal lake Fumarolnoye (Uzon caldera, Kamchatka) has been carried out. The results of studying delta C-13 changes in the bottom sediments of a thermal lake during the sequential extraction of H3PO4 for 2 hours, 24 hours and 7 days are presented. The change in delta C-13 with time and after treatment with HCl and H2O2 is shown using two samples as an example. After treatment with HCl, the delta C-13 values change relative to the initial ones from 1 to 3 9/00, which can be taken into account when interpreting the data. The standard procedure for removing carbonate with hydrogen peroxide reveals a significant transformation of the residual C-containing substance in the case of a prolonged reaction with H3PO4 at elevated temperatures.
Ключевые слова:	organic-containing bottom sediments; peat; thermal reservoir; Uzon caldera; stable carbon isotopes; MATTER; DELTA-C-13; ACID; Kamchatka;
Издано:	2021
Физ. характеристика:	с.418-432