Sökning: "micellar electrokinetic chromatography"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden micellar electrokinetic chromatography.

1. 1. Studies of Micellar Electrokinetic Chromatography as an Analytical Technique in Pharmaceutical Analysis - an Industrial Perspective

   Författare :Karin Stubberud; Brian J. Clark; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; Micellar Electrokinetic Chromatography; Pharmaceutical Analysis; Chemometrics; Validation; Mass Spectrometry; Partial-filling technique; Pilocarpine; Ibuprofen; Codeine.; Farmaceutisk kemi; Pharmaceutical chemistry; Farmaceutisk kemi; analytisk farmaceutisk kemi; Analytical Pharmaceutical Chemistry;

   Sammanfattning : Studies have been performed to evaluate the use of micellar electrokinetic chromatography (MEKC), one mode of capillary electrophoresis (CE), as an analytical technique in industrial pharmaceutical analysis. The potential for using chemometrics for the optimisation of MEKC methods has also been studied as well as the possibilities of coupling MEKC with mass spectrometry (MS). LÄS MER

3. 2. Separation of peptides by capillary electrophoresis : Application of chemometrics for evaluation of separation performance in micellar electrokinetic chromatography

   Författare :Margrét Thorsteinsdóttir; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; Farmaceutisk kemi; Pharmaceutical chemistry; Farmaceutisk kemi;

   Sammanfattning : The separation of enkephalin-related peptides and protein kinase A peptide substrates werestudied in micellar electrokinetic chromatography and compared with capillary zoneelectrophoresis. Special interest was focused on systems where the electroosmosis wasreversed in combination with neutral micellar agents. LÄS MER

4. 3. Micellar electrokinetic chromatography with laser-induced fluorescence detection applied to the analysis of biological samples

   Författare :Gunnar Thorsén; Andrew G Ewing; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical Chemistry; analytisk kemi;

   Sammanfattning : The research presented in this thesis is focused on the potential for using the combination of micellar electrokinetic chromatography with laser-induced fluorescence detection for the determination of compounds in biological samples. The topics that have been addressed are the development of separation electrolytes, the need for sample preparation procedures, the derivatization of the compounds of interest and the detection of these by laser-induced fluorescence. LÄS MER

5. 4. Sensitivity and selectivity studies in capillary electrophoresis

   Författare :Maria Petersson; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; peptides; dansyl amino acids; imaging detection; cyclodextrins; enantiomer separation; acoustic levitation; solid-phase extraction; preconcentration; capillary electrophoresis; micellar electrokinetic chromatography; drugs; Analytical chemistry; Analytisk kemi;

   Sammanfattning : Capillary electrophoresis is characterised by high separation efficiency, applicability to a wide range of compounds, small sample and solvent consumption and simple instrumentation. To improve sensitivity using on-line absorbance detectors, which are hampered by the short optical path length, sample volumes in the microlitre range were concentrated to nanolitre volumes either off-line or on-line. LÄS MER

7. 5. Aspects of Optimisation of Separation of Drugs by Chemometrics

   Författare :Valérie Harang; Douglas Westerlund; Sven P. Jacobsson; Bo Karlberg; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; optimisation; separation; chemometrics; high performance liquid chromatography; electrodriven techniques; microemulsion electrokinetic chromatography; statistical experimental design; molecular modelling; chiral separation; cellobiohydrolase; Farmaceutisk kemi; Pharmaceutical chemistry; Farmaceutisk kemi;

   Sammanfattning : Statistical experimental designs have been used for method development and optimisation of separation. Two reversed phase HPLC methods were optimised. LÄS MER