Sökning: "Precision mass spectrometry"
Visar resultat 1 - 5 av 61 avhandlingar innehållade orden Precision mass spectrometry.
1. Precision mass measurements : Final limit of SMILETRAP I and the developments of SMILETRAP II
Sammanfattning : The subject of this thesis is high-precision mass-measurements performed with Penning trap mass spectrometers (PTMS). In particular it describes the SMILETRAP I PTMS and the final results obtained with it, the masses of 40Ca and that of the proton. LÄS MER
2. Metabolic Studies with Liquid Separation Coupled to Mass Spectrometry
Sammanfattning : Metabolism is the sum of all chemical processes with the purpose to maintain life, as well as enable reproduction, in a living organism. Through the study of metabolism, increased understanding of pharmacological mechanisms and diseases can be achieved. LÄS MER
3. SMILETRAP I / II : Precision Improvements in Penning-Trap Mass-Spectrometry
Sammanfattning : This thesis describes the final precision mass measurements with SMILETRAP I, where a relative precision of < 1 ppb (10-9) was reached routinely, and the development of SMILETRAP II, aiming for measurements with < 0.1 ppb relative precision. LÄS MER
4. 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
5. 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
