Hlavní stránka > Výsledky hledání: Bachratá, Radka
Hledej:
Tipy pro vyhledávaní :: Rozšířené hledání
Hledej ve sbírkách:
Seřadit podle: Zobrazit výsledky: Výstupní formát:
Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.00 vteřin. 
Molecular study of lipids in humic acids by sequential chemical degradation
 Bachratá, Radka ; Grasset, Laurent (oponent) ; Klučáková, Martina (vedoucí práce)
Soil lipids were shown to have relatively high resistance to biodegradation and therefore could provide information on organic matter sources and diagenetic processes. Soil organic matter is highly heterogeneous and different dynamic pools have been evidenced. However the links between these pools and molecular structure have not yet been established. Lipid and bitumen analyses were performed for two samples (i.e. peat and lignite). Numerous compound classes (free hydrocarbons and free ketones, bound alkanols, bound fatty acids, bound -hydroxy acid, bound diacids and polycyclic compounds) were identified in both samples and their different distribution was determined. GC/MS analysis of the free and bound lipids has revealed different main sources depending on the differential degradation. Some similarities could be a strong sign of the preservation of a part of waxes and suberins from higher plants (long chained bound fatty acids.) Large differences in lipid molecular composition were observed between the samples, illustrating the importance of studying lipids from a young sediment (peat) and an older one (lignite).
Úplný záznam
Molecular study of lipids in humic acids by sequential chemical degradation
 Bachratá, Radka ; Grasset, Laurent (oponent) ; Klučáková, Martina (vedoucí práce)
Soil lipids were shown to have relatively high resistance to biodegradation and therefore could provide information on organic matter sources and diagenetic processes. Soil organic matter is highly heterogeneous and different dynamic pools have been evidenced. However the links between these pools and molecular structure have not yet been established. Lipid and bitumen analyses were performed for two samples (i.e. peat and lignite). Numerous compound classes (free hydrocarbons and free ketones, bound alkanols, bound fatty acids, bound -hydroxy acid, bound diacids and polycyclic compounds) were identified in both samples and their different distribution was determined. GC/MS analysis of the free and bound lipids has revealed different main sources depending on the differential degradation. Some similarities could be a strong sign of the preservation of a part of waxes and suberins from higher plants (long chained bound fatty acids.) Large differences in lipid molecular composition were observed between the samples, illustrating the importance of studying lipids from a young sediment (peat) and an older one (lignite).
Úplný záznam

Chcete být upozorněni, pokud se objeví nové záznamy odpovídající tomuto dotazu?
Přihlásit se k odběru RSS.
Digitální repozitář :: Hledej :: Nový záznam :: Personalizace :: Nápověda
Powered by Invenio v1.1.2
Spravuje admin.invenio@techlib.cz
Tato stránka je dostupná také v následujících jazycích:
Česky  English