Search for dissertations about: "STATIONARY-PHASE"

Showing result 1 - 5 of 90 swedish dissertations containing the word STATIONARY-PHASE.

2. 1. Composite Cryogels: Stationary Phase for Separation of Complex Media

   Author : Solmaz Hajizadeh; Bioteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Composite cryogel; Complex media; Purification; Chromatography; Environmental application; Molecularly imprinted polymer;

   Abstract : Demands for efficient, economical and fast separation and purification methods for various target molecules have led to the development of new techniques and materials for bioseparation processes. Separation can be carried out in both batch and chromatographic modes. READ MORE

4. 2. Hydrophilic Separation Materials for Liquid Chromatography

   Author : Petrus Hemström; Knut Irgum; Peter Schoenmakers; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chromatography; HILIC; Hydrophilic; Stationary phase; Chemistry; Kemi;

   Abstract : The main focus of this thesis is on hydrophilic interaction chromatography (HILIC) and the preparation of stationary phases for HILIC. The mechanism of HILIC is also discussed; a large part of the discussion has been adapted from a review written by me and professor Irgum for the Journal of Separation Science (ref 34). READ MORE

5. 3. Aspects of Porous Graphitic Carbon as Packing Material in Capillary Liquid Chromatography

   Author : Anna Törnkvist; Wolfgang Lindner; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; PGC; porous graphitic carbon; stationary phase; packing material; LC; liquid chromatography; miniaturized; chiral; enantiomer; ESI; electrospray ionization; mass spectrometry; polar compounds; L-DOPA; dopamine; biological samples; biological matrix; Analytisk kemi; PGC; poröst grafitiserat kol; stationärfas; packningsmaterial; LC; vätskekromatografi; miniatyriserade system; kiral; enantiomer; ESI; electrospray jonisation; mass spektrometri; polära föreningar; L-DOPA; dopmamine; biologiska prover; biologisk matris; Analytical chemistry; Analytisk kemi; Analytical Chemistry; Analytisk kemi;

   Abstract : In this thesis, porous graphitic carbon (PGC) has been used as packing material in packed capillary liquid chromatography. The unique chromatographic properties of PGC has been studied in some detail and applied to different analytical challenges using both electrospray ionization-mass spectrometry (ESI-MS) and ultra violet (UV) absorbance detection. READ MORE

6. 4. Polyhydroxyl and Polyphosphorylcholine functionalized Silica for Hydrophilic interaction liquid Chromatography- Synthesis, characterization and application

   Author : Nhat Thi Hong Bui; Knut Irgum; Michael Lämmerhofer; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hydrophilic Interaction Chromatography; HILIC; silica; TRIS; acrylamide acrylate; ATRP; iniferter; “controlled living’’ radical polymerization; N; N′-methylenebisacrylamide; MPC; stationary phase; analytisk kemi; Analytical Chemistry;

   Abstract : This thesis focuses on the development of new stationary phases for use in hydrophilic interaction liquid chromatography using TRIS-based and phosphorylcholine typed monomers and porous silica particles as starting substrates. In this thesis, several ways of polymerizing highly hydrophilic mono­mers onto pore surfaces of silica supports are described, based on several “grafting from” schemes. READ MORE

7. 5. Cellulose synthases in Populus- identification, expression analyses and in vitro synthesis

   Author : Soraya Djerbi; Tuula Teeri; Petter Gustafsson; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cellulose synthase; Populus; secondary cell wall; gene upregulation; cell suspension culture; stationary phase; Bioengineering; Bioteknik;

   Abstract : Cellulose is a biopolymer of great relevance in the plant cell walls, where it constitutes the most important skeletal component. Cellulose is also an important raw material in the pulp- and paper, forest, and textile industries, among others. READ MORE