Browsing Department of Chemistry by Author "Abia, Romanus Ogechukwu"
Development and validation of a novel method for serotonin and 5-hydroxyindole-acetic acid determination in plasma using liquid chromatography tandem mass spectrometry Abia, Romanus Ogechukwu (The University of Bergen and University of Cadiz, 2014-05-07)5-Hydroxytryptamine (5-HT) also known as serotonin is a biomarker in gastrointestinal disorder and several other pathological diseases where 5-HT and its metabolite 5-hydroxyindole-acetic acid are implicated. A sensitive ...Master thesis
Direct Injection Electrospray Mass Spectrometry (DI-ESI-MS) and Liquid Chromatography Electrospray Mass Spectrometry (LC-ESI-MS) method development for characterisation of organic acids in petroleum and bio-oil samples Abia, Romanus Ogechukwu (The University of Bergen, 2017-05-09)Analysis and characterisation of complex mixtures such as petroleum and bio-oils are unarguably challenging. Finding suitable analytical method therefore needs to be considered carefully by analytical chemists. Electrospray ...Master thesis