Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"ion transmission"”.
-
Ion Transmission in the first vacuum stage of an Inductively Coupled Plasma Mass Spectrometer
… when instrument response varies as the composition of the sample matrix is changed. Matrix effects, or non-spectroscopic interferences, limit the accuracy of routine analysis. Identification of the sources of matrix effects provide a basis for reducing or eliminating them. As inaccuracies in the …
-
Centennial-scale elemental and isotopic variability in the tropical and subtropical North Atlantic Ocean
… ICP-MS. This study presents new observations of the large (0.7% amu-l), time-dependent mass fractionation determined by thallium normalization, including preferential light ion transmission induced by the acceleration potential and nebulizer conditions. These experiments show equivalent …
-
Investigation and characterization of the Direct Analysis in Real Time helium metastable beam open-air ion source: Mechanism of ionization, fluid dynamic visualization, and applications
<p>The DART ion source was introduced in 2005 at the ASMS Sanibel Conference and immediately afterward Professor Sparkman was contemplating of a way to get our lab this revolutionary mass spectrometry ionization technique. It did not take long because it was delivered to the Pacific Mass …
-
Enhanced Electrospray Ionization for Mass Spectrometry and Ion Mobility Spectrometry
Electrospray ionization (ESI) has become one of the most commonly used ionization techniques for mass spectrometry (MS) and ion mobility spectrometry (IMS), and efforts continue to improve its performance. ESI-MS is most recognized for its wide application to biomacromolecules where high …
-
Design and evaluation of a laser ion source for TITAN to measure 222Rn daughter product abundances
… focuses on developing and implementing a Laser Ion Source (LIS) at TRIUMF’s Ion Trap for Atomic and Nuclear Science (TITAN) facility to achieve high-precision isotope abundance ratio mea-surements across diverse materials. The project aims to quantify long-lived daughter products of 222Rn, …