Structural investigation of humic substances and natural organic matter using 2D NMR, FTICR MS and optical spectroscopy

Авторы: Zherebker A.Ya, Kostyukevich Yu I., Shirshin E.A., Kharybin O.N., Kononikhin A.S., Perminova I.V., Nikolaev E.N.
Сборник: 19TH INTERNATIONAL CONFERENCE OF IHSS. HUMIC SUBSTANCES AND THEIR CONTRIBUTION TO THE CLIMATE CHANGE MITIGATION. Book of Abstracts
Тезисы
Год издания: 2018
Место издания: Sofia
Первая страница: 178
Последняя страница: 179
Аннотация: Here we report an application of fractionation, 2D NMR, FTICR MS and optical measurements for mapping phenols, aliphatic and aromatic carboxylic acids and ketoacids on Van Krevelen diagram for HS. We applied sequential SPE on PPL cartridges with gradual lowering of the pH. 2D NMR and fluorescence revealed a shift in nature of COO-groups and changes in terrestrial/DOM components proportions. Application of ultra-high resolution FTICR MS showed interconnection between molecular composition and structure of components. Using deuteromethylation it was also shown the connection between structure and a number of carboxylic groups.
Добавил в систему: Константинов Андрей Иванович

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