RT info:eu-repo/semantics/doctoralThesis
T1 Analytical strategies for sample preparation using novel materials
T2 Estrategias analíticas de preparación de muestras utilizando novedosos materiales
A1 Pacheco Fernández, María Idaira
K1 Análisis cromatográfico
K1 Tecnología de materiales
AB Sample preparation is the stage of the analytical procedure that deals with the extractionof the target compounds from a sample and includes the elimination of the interferences comingfrom the sample matrix, thus ensuring the compatibility with the analytical instrument whileimproving the selectivity and sensitivity of the entire method. Given the complexity of the samples,the trace concentrations at which analytes are present in the samples, and the importance ofincorporating the Green Chemistry principles in the analytical process, the development ofmicroextraction techniques and the incorporation of new materials have been demanding researchlines within analytical sample preparation to address these challenges.Among the outstanding materials described that can meet green requirements and exhibitsuccessful analytical performance in sample preparation, ionic liquids (ILs) and metal-organicframeworks (MOFs) must be highlighted.ILs are molten salts formed by the combination of bulky organic cations and organic orinorganic anions. They present melting points lower than 100 °C and, depending on the moietiesselected and the incorporation of specific functional groups in their structure, they can exhibitspecific characteristics. Therefore, it is possible to prepare several interesting derivatives, such aspolymeric ionic liquids (PILs) and IL-based surfactants.MOFs are crystalline materials composed of metallic clusters and organic linkers connectedby coordination bonds. They are mainly characterized by their high surface area and tunability,which allows designing MOFs with specific topologies by selecting the adequate components andsynthetic conditions. These characteristics make MOFs potential materials to host targetcompounds.In this Doctoral Thesis, ILs and MOFs were designed, synthesized and incorporated in awide variety of challenging analytical applications using microextraction techniques. Among theexisting techniques, dispersive liquid-liquid microextraction (DLLME) and solid-phasemicroextraction (SPME) were selected due to their simplicity, fastness, and high preconcentrationability.
YR 2020
FD 2020
LK http://riull.ull.es/xmlui/handle/915/23077
UL http://riull.ull.es/xmlui/handle/915/23077
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 19-nov-2024