Essays about: "liquid column"

Showing result 31 - 35 of 42 essays containing the words liquid column.

  1. 31. Development of a Liquid Chromatography Method to Separate and Fractionate EPA’s 16 Priority Polycyclic Aromatic Hydrocarbons (PAHs)

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Tim Sinioja; [2016]
    Keywords : ;

    Abstract : Polycyclic Aromatic Hydrocarbons (PAHs) are persistent, toxic and carcinogenic environmental pollutants consisting of two or more aromatic rings. The estimation of the toxicity of PAHs can be challenging and time-consuming due to the complexity of PAH-mixtures found in the environment, for example at contaminated sites. READ MORE

  3. 32. The potential of Fluid Dynamic Absorbers for railway vehicle suspensions

    University essay from KTH/Spårfordon

    Author : Visakh V Krishna; [2016]
    Keywords : ;

    Abstract : The main running objectives concerning the vertical dynamics of passenger rail vehicles are ride comfort and safety. The goal of this thesis is to employ the use of a Fluid Dynamic Absorber to minimize the vertical acceleration of the car body while minimizing the dy-namic force fluctuations in the wheel rail contact. READ MORE

  4. 33. Evaluation of a UPLC-MS method using 18O-labelled water for the identification of hydrolytic degradants of drug substances

    University essay from Uppsala universitet/Avdelningen för analytisk farmaceutisk kemi

    Author : Viktor Kjellberg; [2015]
    Keywords : hydrolysis; degradation; degradants; 18O; 18O-water; liquid chromatography; mass spectrometry; analytical chemistry; structure eludication;

    Abstract : In this master’s thesis the hydrolytic degradation in 18O-water solutions of six drug substances has been studied. The aim was to develop a mass spectrometric method for easier identification of degradants, since hydrolysis in 18O-water will generate degradants with higher mass compared with hydrolysis in regular water. READ MORE

  5. 34. Solvent adsorption in SFC : Adsorption of methanol under supercritical conditions

    University essay from Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper

    Author : Emelie Edström; [2015]
    Keywords : SFC; excess adsorption isotherm; methanol; tracer pulse;

    Abstract : Chromatography is a widely used separation technique including many different modes, for example supercritical fluid chromatography (SFC) which uses a supercritical fluid as mobile phase. A supercritical fluid is achieved when a substance is subjected to a temperature and pressure above the critical point and the boundary between the liquid phase and gas phase is erased. READ MORE

  6. 35. Quantifying soluble isoforms of amyloid precursor protein in cerebrospinal fluid with a SRM-MS based assay ─ method development

    University essay from Institutionen för fysik, kemi och biologi; Tekniska högskolan

    Author : Elin Lindström; [2013]
    Keywords : Alzheimer’s disease; mass spectrometry; proteomics; APP; biomarkers;

    Abstract : Alzheimer’s is a widespread neurodegenerative disease, growing larger and larger in the world. Once developed, the disease has no cure. To this day, there is only mitigating drugs. To be able to start this treatment rapidly, a method to distinguish healthy individuals from prospective Alzheimer’s diseased needs to be developed. READ MORE