Phyllosilicate-content influence on the spectroscopic properties and antioxidant capacity of Iberian Cretaceous clays
| Autor: | S. Sanllorente, Javier García-Tojal, Carlos Rad, Pilar Muñiz, María R. Pedrosa, Eneko Iriarte, Susana Palmero, Dolores Rivero-Perez, Maria Cruz Zuluaga, Mónica Cavia-Saiz |
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| Rok vydání: | 2021 |
| Předmět: |
DPPH
Analytical chemistry Infrared spectroscopy 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Analytical Chemistry chemistry.chemical_compound Kaolinite Fourier transform infrared spectroscopy Instrumentation Inductively coupled plasma mass spectrometry Spectroscopy Chemistry Muscovite Química 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences X-ray diffraction Antioxidant capacity Clay minerals Illite engineering Electron paramagnetic resonance 0210 nano-technology |
| Zdroj: | Repositorio Institucional de la Universidad de Burgos (RIUBU) instname |
| Popis: | 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. 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) |
| Databáze: | OpenAIRE |
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