RT info:eu-repo/semantics/article
T1 Phyllosilicate-content influence on the spectroscopic properties and antioxidant capacity of Iberian Cretaceous clays
A1 García Tojal, Javier
A1 Iriarte Avilés, Eneko
A1 Palmero Díaz, Susana
A1 Pedrosa Sáez, María de los Remedios
A1 Rad Moradillo, Juan Carlos
A1 Sanllorente Méndez, Silvia
A1 Zuluaga, María Cruz
A1 Cavia Saiz, Mónica
A1 Rivero Pérez, Maria Dolores
A1 Muñiz Rodríguez, Pilar
K1 Clay minerals
K1 Electron paramagnetic resonance
K1 Infrared spectroscopy
K1 Infrared spectroscopy
K1 X-ray diffraction
K1 Antioxidant capacity
K1 Química
K1 Chemistry
AB Kaolinite-rich Cretaceous clay sediment samples from Burgos (Spain) have been analyzed by elemental analysis, X-ray fluorescence, inductively coupled plasma mass spectrometry, X-ray diffraction and different spectroscopic techniques, as Fourier Transform Infrared, ultraviolet–visible and electron paramagnetic resonance. The clay sediment samples mainly contain quartz, muscovite and kaolinite. Different radicals, as A- and B-Centers in kaolinite and organic paramagnetic species, are detected. An illite/kaolinite FTIR band ratio parameter (IKB) is proposed to infer the illite/kaolinite proportion, which can be useful to graphically visualize the iron-substituted Al(III) sites. Studies of the activity as scavengers of DPPH and ABTS radicals show that samples with a larger amount of orthorhombic Fe(III) ions replacing Al(III) ions exhibit a higher antioxidant capacity.
PB Elsevier
SN 1386-1425
YR 2021
FD 2021-04
LK http://hdl.handle.net/10259/5826
UL http://hdl.handle.net/10259/5826
LA eng
NO Consejería de Educación of Junta de Castilla y León BU022G18, Junta de Castilla y León and FEDER BU291P18 and  BU049P20, Ministerio de Economía y Competitividad CTQ2016-75023-C2-1-P and Ministerio de Ciencia, Innovación y Universidades CTQ(QMC) RED2018-102471-T MultiMetDrugs Network (Spain)
DS Repositorio Institucional de la Universidad de Burgos
RD 04-dic-2024