Sökning: "SFC"

Visar resultat 1 - 5 av 30 avhandlingar innehållade ordet SFC.

1. 1. Fundamental Investigations of Adsorption in SFC

   Författare :Emelie Glenne; Torgny Fornstedt; Jörgen Samuelsson; Caroline West; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Supercritical fluid chromatography; SFC; Adsorption isotherm; Excess adsorption isotherm; Solvent adsorption; Peak distortion; Solute retention; Overloaded peaks; Kemi; Chemistry;

   Sammanfattning : In supercritical fluid chromatography (SFC), the eluent is composed by carbon dioxide, often with additional components, in a condition between gas and liquid. This thesis aims to reach a deeper understanding of SFC by revealing the function of the additional eluent components through systematic adsorption studies. LÄS MER

3. 2. Fundamental Investigations of Supercritical Fluid Chromatography

   Författare :Martin Enmark; Torgny Fornstedt; Arvind Rajendran; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Supercritical Fluid Chromatography; SFC; Modeling; Adsorption Isotherms; Scale-up; Peak Distortion; Injection; Design of Experiments; Perturbation Peak Method; Elution by Characteristic Points Method; Method transfer; Kemi; Chemistry;

   Sammanfattning : This thesis aims at a deeper understanding of Supercritical FluidChromatography (SFC). Although preparative SFC has started to replace Liquid Chromatography (LC) in the pharmaceutical industry - because of its advantages in speed and its less environmental impact - fundamental understanding is still lacking. LÄS MER

4. 3. Analytical Supercritical Fluid Extraction of Lipid Containing Samples

   Författare :Mattias Järemo; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SFC; extraction cell; liquid samples; fat retainers; lipids; SFE; carbon dioxide; Analytical chemistry; Analytisk kemi;

   Sammanfattning : Traditionally, sample work-up has been associated with different kinds of liquid extraction techniques involving a large consumption of hazardous solvents. There are today regulations that aims at replacement of dangerous chemicals which has created a need for new extraction techniques. LÄS MER

5. 4. Innovatie Core Concepts for Future Aero Engines

   Författare :Lei Xu; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aero engine; CFD; variable flow core; system performance; statorless turbine; innovative core; intercooler; SFC;

   Sammanfattning : .... LÄS MER

7. 5. Determination of the Environmental Fate of Drug Substances and the Matrix Effects of Complex Samples in SFC/ESI-MS

   Författare :Alfred Haglind; Curt Pettersson; Mikael Hedeland; Torbjörn Arvidsson; Deirdre Cabooter; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SFC-MS; matrix effect; ion cluster; Supercritical fluid chromatography; ESI; chiral separation; transformation products; LC-QToF; wetland microcosms; Analytical Pharmaceutical Chemistry; Analytisk farmaceutisk kemi;

   Sammanfattning : Awareness of the potential problems caused by drug compounds in the environment has increased over the last decade, both among researchers and with the public. This thesis describes the development of analytical methods and their application to wetlands constructed for purification of wastewater from e.g. drug compounds. LÄS MER