Sökning: "surface ionization"
Visar resultat 1 - 5 av 80 avhandlingar innehållade orden surface ionization.
1. Laser ionization mass spectrometry as a method for chemical analysis of solids and surfaces
Sammanfattning : .... LÄS MER
2. New methods for sensitive analysis with nanoelectrospray ionization mass spectrometry
Sammanfattning : In this thesis, new methods that address some current limitations in nanoelectrospray mass spectrometry (nESI-MS) analysis are presented. One of the major objectives is the potential gain in sensitivity that can be obtained when employing the proposed techniques. LÄS MER
3. Surface Charge Dynamics on Polymeric Insulating Materials for High Voltage Applications
Sammanfattning : To meet increasing demands in electric energy, it is essential to enhance production of electricity from renewable energy sources (solar, wind and hydro). Such generation sites, however, are usually separated from consumption sites by long distances. LÄS MER
4. LDI-MS strategies for analysis of polymer degradation products, additives and drugs
Sammanfattning : The advancement of mass spectrometry (MS) has been and continues to be a prominent analytical technique for highly accurate determination of analytes. The goal of this thesis was to develop new laser desorption ionization-mass spectrometric (LDI-MS) methods for analysis of polymer degradation products, additives and drugs. LÄS MER
5. Mass Spectrometry with Electrospray Ionization from an Adjustable Gap
Sammanfattning : In this thesis the fabrication and analytical evaluation of two new electrospray emitters utilized for mass spectrometry analysis is presented. The emitters are based on a new concept, where the spray orifice can be varied in size. The thesis is based on two papers. All present-day nanoelectrospray emitters have fixed dimensions. LÄS MER