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Advanced Separation Techniques and Data Processing in Capillary Electrophoresis
Ansorge, Martin ; Ušelová, Kateřina (advisor) ; Ševčík, Juraj (referee) ; Masár, Marián (referee)
Techniques of capillary electrophoresis are essential for both the quantitative and qualitative analysis of a large variety of compounds. They find application in many areas of chemistry, from pharmacological industry and food processing, up to highly specialized biotechnological laboratories. Over the last hundred years, their mathematical model has been described with precision. Thus, current research mainly aims for the development of more advanced and more specialized applications. During the greatest boom of affinity capillary electrophoresis within the nineties, many authors would describe similar phenomena under different names. The first part of this work focuses on the consolidation and unification of the problematics and terminology of this method. It also discusses the phenomena which can affect electromigration and separation during electrophoretic processes. We will focus on a specific subset of affinity capillary electrophoresis, partial filling capillary electrophoresis, which, to our knowledge, has not been fully theoretically explored yet, and present a mathematical model allowing the determination of complexation constants and state some limitations of this approach. The second part of this thesis focuses on the development and application of computer softwares, which are meant...
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Changes in the background electrolyte caused by electrolysis in capillary zone electrophoresis
Novotný, Tomáš ; Gaš, Bohuslav (advisor) ; Křížek, Tomáš (referee)
4 Abstract Electrode reactions are one of the inevitable side effects which occur during standard separation measurement on capillary zone electrophoresis. Electrolytic products arising from the electrolysis of water, which is the main procces occuring at the electrodes in the majority of cases, can cause changes in background electrolyte located in vials and inside the separation capillary. The precision and reproducibility of the separation experiments is decreased due to the degradation of background electrolyte in capillary zone electrophoresis. Changes in the background electrolyte are highly dependent on the composition of the buffer itself: some electrolytes are changed more than the others within the same configuration of the experiment. A correct choice of the buffer with the right manipulation of the background electrolyte leads to higher precision and reproducibility of the separation measurements. Keywords: Capillary zone electrophoresis, electrolysis, background electrolyte, contactless conductivity detection
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