Sensitivity enhancement strategies in capillary electrophoresis for the determination of drugs of abuse and non-steroidal anti-inflammatory drugs

Identifier:  TDX:1115

Handle: https://hdl.handle.net/20.500.11797/TDX1115

Authors:  Botello González, Igor

Abstract:
Capillary electrophoresis is a highly promising analytical separation technique with a wide range of applications in biological and environmental fields. However, Capillary electrophoresis suffers from a lack of sensitivity when compared with chromatographic techniques because, in general, it is not possible to inject high sample volumes and also due to the short optical path-length for on-capillary detection. The objective of this Doctoral Thesis is the development of analytical methods to increase sensitivity in capillary electrophoresis for the determination of pharmaceuticals and drugs of abuse in environmental and biological samples. To do that, several preconcentration techniques either stacking (based on isotachophoresis principles) or chromatographic (based on in-line SPE) have been studied. The compounds selected for the different studies in this Doctoral Thesis belong to the pharmaceutical compound group (in particularly in non-steroidal anti-inflammatory drugs) and to the drugs of abuse group.