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Dissertations / Theses on the topic 'Ion mass spectrometry'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Yuen, Wei Hao. "Ion imaging mass spectrometry." Thesis, University of Oxford, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.564395.

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This work investigates the applicability of fast detectors to the technique of microscope-mode imaging mass spectrometry. By ionising analyte from a large area of the sample, and projecting the desorbed ions by the use of ion optics through a time-of-flight mass spectrometer onto a two- dimensional detector, time- (and hence mass-) dependent distributions of ions may be imaged. To date, this method of imaging mass spectrometry has been limited by the ability to image only one mass window of interest per experimental cycle, limiting throughput and processing speed. Thus, the alternative micropr

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2

Berezovskaya, Yana. "Investigation of protein-ion interactions by mass spectrometry and ion mobility mass spectrometry." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/7747.

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Protein‐ion interactions play an important role in biological systems. A considerable number of elements (estimated 25 – 30) are essential in higher life forms such as animals and humans, where they are integral part of enzymes involved in plethora of cellular processes. It is difficult to overestimate the importance of thorough understanding of how protein‐ion interplay affects living cell in order to be able to address therapeutic challenges facing humanity. Presented to the reader’s attention is a gas‐phase biophysical analysis of peptides’ and proteins’ interactions with biologically relev

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3

Lemire, Sharon Warford. "Rigorous analytical applications of liquid secondary ion mass spectrometry/mass spectrometry." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/30026.

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4

O'Neill, Karen Elizabeth. "Studies in ion trap mass spectrometry." Thesis, University of East Anglia, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332326.

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5

Woods, Lucy Ann. "Characterising amyloid assembly using ion mobility spectrometry-mass spectrometry." Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590277.

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From small molecules to macromolecules, mass spectrometry has evolved significantly over the past decade, progressing from a tool to identify chemical elements to a powerful technique able to elucidate structural information for large protein complexes. With the interfacing of ion mobility spectrometry to mass spectrometry (IMS-MS), mass spectrometric analyses now occupy an extra dimension, providing unrivalled separation and structural characterisation of lowly-populated species in heterogeneous mixtures. One biological system that has benefitted enormously from such advances is the study of

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6

Zhou, Li. "Enhanced Electrospray Ionization for Mass Spectrometry and Ion Mobility Spectrometry." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1384.pdf.

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7

Shliaha, Pavel Vyacheslavovich. "Investigation of protein abundance and localization by mass spectrometry and ion-mobility spectrometry-mass spectrometry methods." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708661.

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8

Al-Omair, Ali Saleh. "Ion chromatography/mass spectrometry : development and characterization." Thesis, University of Kent, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257141.

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9

Penman, Andrew D. "Some studies in ion trap mass spectrometry." Thesis, University of Kent, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279800.

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10

Jonscher, Karen Rae Hood Leroy E. "Quadrupole ion trap mass spectrometry of peptides /." Diss., Pasadena, Calif. : California Institute of Technology, 1997. http://resolver.caltech.edu/CaltechETD:etd-01142008-075423.

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11

Mohan, Krishnan R. "Fast atom bombardment mass spectrometry and tandem mass spectrometry : conditions for measurement of reproducible spectra." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/27159.

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12

Pollum, Laura L. "Digital ion trap mass spectrometry for cold ion-molecule chemistry." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:18c6451d-d247-4384-9257-f8864e038343.

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A promising new approach for studying cold ion-molecule chemical reactions is the combination of laser- or sympathetically-cooled trapped ions and slow-moving molecules from a cold molecule source, such as a quadrupole velocity selector or a Stark decelerator. Previous reaction studies using trapped atomic ions and slow molecules from a quadrupole velocity selector were able to reach average collision energies as low as 1 K. However, the guided molecules had an approximately room temperature rotational energy distribution, so the reactions studied were not truly cold. Thus, a new molecular sou

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13

Ding, Luyi. "Studies of electrospray/ion mobility spectrometry/time-of-flight mass spectrometry." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0015/NQ48344.pdf.

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14

Koeniger, Stormy Lee Ann. "Multidimensional ion mobility spectrometry coupled to time-of-flight mass spectrometry." [Bloomington, Ind.] : Indiana University, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3230539.

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Thesis (Ph. D.)--Indiana University, Dept. of Chemistry, 2006.<br>Title from PDF t.p. (viewed Nov. 5, 2008). Source: Dissertation Abstracts International, Volume: 67-08, Section: B, page: 4395. Adviser: David E. Clemmer.

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15

Chawner, Ross. "Combined tandem mass spectrometry and ion mobility spectrometry in proteome analyses." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/combined-tandem-mass-spectrometry-and-ion-mobility-spectrometry-in-proteome-analyses(3ba76f18-4703-4f6e-a97f-ee2b1dfb1deb).html.

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Proteomic studies aim to identify, quantify and characterise the full complement of proteins in a cell or organism under a defined set of conditions, and are important to our understanding of cellular mechanisms. However, such studies represent a major analytical challenge. A typical proteome analysis involves enzyme-mediated digestion of complex protein mixtures to yield an even more complex mixture of peptides. Combined reverse-phase liquid chromatography and tandem mass spectrometry is then traditionally utilised to ascertain sequence information from the characteristic peptide sequences. A

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16

Coath, Christopher D. "A study of ion-optics for microbeam secondary-ion mass spectrometry." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335723.

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17

Barnett, David. "Elemental speciation by negative ion electrospray mass spectrometry." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0006/NQ39502.pdf.

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18

Jones, Brian N. "The development of MeV secondary Ion mass spectrometry." Thesis, University of Surrey, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580361.

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ABSTRACT. The main aim of the research presented in this dissertation is to develop a novel imaging mass spectrometry technique that uses molecular desorption induced by heavy ions accelerated to kinetic energies in the MeV/u regime. Upon impact with a sample, heavy ions accelerated above the Bohr velocity deposit their energy predominantly through electronic stopping and this has been shown to produce high sputtering yields from an insulating sample's surface. This interaction has been traditionally called electronic sputtering and was first put to analytical use many decades ago by a techniq

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19

Hearn, M. J. "Polymer surface studies by Secondary Ion Mass Spectrometry." Thesis, De Montfort University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380743.

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20

Nakata, Yoshihiko. "Imaging Mass Spectrometry with MeV Heavy Ion Beams." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/124537.

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21

Xu, Yaodong. "Applications of mass spectrometric techniques to charge-transfer processes and cluster ion reactions." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/26208.

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22

Gilmore, Ian Stuart. "Development of a measurement base for static secondary ion mass spectrometry." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/11110.

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This work sets out a framework to provide a metrological basis for static SIMS measurements. This surface analytical technique has been is use for over thirty years but, because of the lack of an infrastructure, has not achieved its full potential in industry. To build this basis, the measurement chain is studied from the sample through to the detector and data processing. By understanding the effects of each link in the chain, repeatabilities are reduced by orders of magnitude to below 1%, the ion beam current and flux density are calibrated to better than 2%, ion beam damage in polymers is c

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23

Cunningham, Connell Glish Gary L. "Improved methods of tandem mass spectrometry for proteomics applications in a quadrupole ion trap mass spectrometer." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,217.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2006.<br>Title from electronic title page (viewed Oct. 10, 2007). " ... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Chemistry. Chapel Hill 2006." Discipline: Chemistry; Department/School: Chemistry.

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24

Göth, Melanie [Verfasser]. "Investigation of Protein-Ligand Complexes by Native Mass Spectrometry and Ion Mobility-Mass Spectrometry / Melanie Göth." Berlin : Freie Universität Berlin, 2017. http://d-nb.info/1149050594/34.

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25

John, Gareth David. "Secondary ion mass spectrometry and resonant ionisation mass spectrometry studies of nickel contacts to silicon carbide." Thesis, Swansea University, 2004. https://cronfa.swan.ac.uk/Record/cronfa42495.

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Time-of-flight secondary ion mass spectrometry (TOF-SIMS) and resonant ionisation mass spectrometry (RIMS) have been used to perform depth profile analyses on nickel (Ni) contacts to silicon carbide (SiC) to understand the interfacial properties. In particular, as-deposited Schottky contacts and high temperature annealed Ohmic contacts have been characterised. Previous literature had indicated that the chemistry of the interface controlled the electrical properties of the contact. Using the TOF-SIMS system, depth profiles have been performed with the standard duoplasmatron ion source and a new

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26

Wang, Miao. "Halo Ion Trap Mass Spectrometry: Design, Instrumentation, and Performance." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2458.

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New ion trap mass spectrometry (ITMS) instrumentation, the toroidal IT and halo IT, were developed to meet the significant growth in on-site analysis applications. The miniature toroidal IT mass analyzer was operated with radio frequency (RF) trapping voltages of 3 kVp-p or less. Despite its reduced dimensions, it has roughly the same ion trapping capacity as conventional 3D quadrupole ITs. Unit-mass resolved spectra for n-butylbenzene, xenon, and naphthalene were obtained. The desired linear mass scale was obtained using conventional mass-selective instability scan combined with resonance eje

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27

Yin, Jian. "Mechanism studies of fast atom bombardment mass spectrometry." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/25987.

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28

Soyk, Matthew W. "Instrumentation development for coupling ion/ion reactions and ion mobility in biological mass spectrometry." [Ames, Iowa : Iowa State University], 2008.

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29

Li, Libing. "Strategies for secondary ion yield enhancements in focused ion beam secondary ion mass spectrometry." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/11806.

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30

Shen, Jim Xiangxin. "Evaluation of metal ion complexation in a quadrupole ion trap mass spectrometer /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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31

Gill, Matthew Clive. "The ion conveyor : an ion focussing and conveying device for mass spectrometry." Thesis, University of Warwick, 2010. http://wrap.warwick.ac.uk/3715/.

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The advent of electrospray ionisation (ESI) has been a major factor driving the revolution which has taken place in the field of biological mass spectrometry over the past twenty years. In this thesis, efforts to improve electrospray ionisation in two respects are detailed. One is the transmission of ions from ambient pressure into the high vacuum of a mass spectrometer. The other is control and influence over making and breaking of bonds, in particular long and weak bonds, during this journey into the mass spectrometer. These improvements to electrospray ionisation have been sought through th

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32

Schmidt, Eric Grayson. "Observation and control of ion motion in fourier transform ion cyclotron resonance mass spectrometry /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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33

Hofmann, Johanna [Verfasser]. "Ion Mobility-Mass Spectrometry of Complex Carbohydrates / Johanna Hofmann." Berlin : Freie Universität Berlin, 2017. http://d-nb.info/1141678438/34.

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34

Knight, Andrew Keith. "Advanced Detection Technology for Ion Mobility and Mass Spectrometry." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/193700.

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The development of new technologies and the advancement of existing technical expertise can allow for dramatic improvements to be realized in analytical instrumentation. The development of an integrating solid-state ion detector, designed to have a high sensitivity as well as maintaining a high-level of stability, is described and evaluated. Several versions of the charge-transimpedance amplifier (CTIA) technology were constructed with different operating features. The CTIA-1 is a 32-pixel array detector designed for mass spectrometry. It has the capability to simultaneously detect multipl

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35

Ma, Xin. "Ion Mobility Mass Spectrometry of DNA/SgrAI Nuclease Oligomers." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/247282.

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SgrAI is a restriction endonuclease (ENase) that cuts a long recognition sequence and exhibits self-modulation of cleavage activity and sequence specificity. Previous research has shown that SgrAI forms large oligomers when bound to particular DNA sequences and under the same conditions where SgrAI exhibits accelerated DNA cleavage kinetics. However, the detailed structure and stoichiometry of SgrAI:DNA as well as the basic building block of the oligomers, has not been fully characterized. Ion mobility mass spectrometry (IM-MS) was employed to analyze SgrAI/DNA complexes and show that the basi

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36

Hauschild, Jennifer M. "Fourier transform ion cyclotron resonance mass spectrometry for petroleomics." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:8604a373-fb6b-4bc0-8dc1-464a191b1fac.

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The past two decades have witnessed tremendous advances in the field of high accuracy, high mass resolution data acquisition of complex samples such as crude oils and the human proteome. With the development of Fourier transform ion cyclotron resonance mass spectrometry, the rapidly growing field of petroleomics has emerged, whose goal is to process and analyse the large volumes of complex and often poorly understood data on crude oils generated by mass spectrometry. As global oil resources deplete, oil companies are increasingly moving towards the extraction and refining of the still plentifu

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37

Spencer, John Edward. "ION MOTION AND AN OPTIMIZATION OF TANDEM MASS SPECTROMETRY." UKnowledge, 2005. http://uknowledge.uky.edu/gradschool_theses/211.

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Quadrupole ion trap(QIT) mass spectrometry has become one of the most widelyused tools in the analysis of the structure of small molecules. The motion of the ionsstored in the quadrupole ion trap is extremely important. This ion motion within thequadrupole ion trap is controlled by several factors including the m/z ratio and thecollisional cross section of the ion. Investigation of ion motion within the QIT has thepotential to elucidate a new way to separate ions based on these factors. DC tomographyexperiments allow for the trajectory of the ion motion to be measured withoutmodifications to t

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38

Williamson, Brian Leslie. "Structural studies using chemical ionisation ion trap mass spectrometry." Thesis, Nottingham Trent University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294164.

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39

Mo, Wenjun. "Physical and chemical studies in ion trap mass spectrometry." Thesis, University of Kent, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296716.

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40

Rainville, Simon 1974. "A two-ion balance for high precision mass spectrometry." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/16934.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2003.<br>Includes bibliographical references (leaves 121-124).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>This thesis describes the demonstration of a new technique that allows masses to be compared with fractional uncertainty at or below 1 x 10-11, an order of magnitude improvement over our previous results. By confining two different ions in a Penning trap we can now simultaneously measure the ratio of their tw

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41

Brown, Lauren J. "Field asymmetric waveform ion mobility spectrometry-mass spectrometry studies of peptides and proteins." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12001.

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Field asymmetric waveform ion mobility spectrometry (FAIMS) is a gas phase atmospheric pressure separation technique that exploits the difference in the mobility of ions in alternating low and high electric fields as they are carried between two electrodes. In this thesis, a miniaturised FAIMS separation step has been applied to increase selectivity, enhance sensitivity and improve the quality of mass spectral data for rapid, high-throughput protein and peptide analysis. In Chapter 2, charge state separations were used to generate pseudo-peptide mass fingerprint data by FAIMS-MS, permitting co

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42

Garabedian, Alyssa Lynn. "Study of Proteoforms, DNA and Complexes using Trapped Ion Mobility Spectrometry-Mass Spectrometry." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3567.

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The characterization of biomolecules and biomolecular complexes represents an area of significant research activity because of the link between structure and function. Drug development relies on structural information in order to target certain domains. Many traditional biochemical techniques, however, are limited by their ability to characterize only certain stable forms of a molecule. As a result, multidimensional approaches, such as ion mobility mass spectrometry coupled to mass spectrometry (IMS-MS), are becoming very attractive tools as they provide fast separation, detection and identifi

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43

Wood, Troy Dale. "Laser desorption Fourier transform ion cyclotron resonance (LD/FT/ICR) mass spectrometry for high mass ions /." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu148784730905092.

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44

Clarke, Nigel J. "Analytical and computational studies in ion trap mass spectroscopy." Thesis, University of Kent, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282487.

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45

Alexander, Nicolas Edward. "Multidimensional Mass Spectrometry of Amphiphilic Systems." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1532773038466757.

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46

Wills, Rebecca Helen. "High mass accuracy analytical applications of Fourier transform ion cyclotron resonance mass spectrometry." Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/60050/.

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The performance capabilities of Fourier transform ion cyclotron resonance (FTICR) mass spectrometry are higher than any other type of mass spectrometer, making this technique suitable for a range of analytical applications. Here, FTICR mass spectrometry has been used for the structural analysis of polyketides and nonribosomal peptides, and in the identification of peptide binding sites of ruthenium(II) arene anticancer complexes. In both these applications, methods have been developed involving complementary tandem mass spectrometry techniques, specifically collision activated dissociation (CA

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47

Faull, Peter Allen. "Exploring gas-phase protein conformations by ion mobility-mass spectrometry." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/3851.

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Analysis and characterisation of biomolecules using mass spectrometry has advanced over the past decade due to improvements in instrument design and capability; relevant use of complementary techniques; and available experimental and in silico data for comparison with cutting-edge research. This thesis presents ion mobility data, collected on an in-house modified QToF mass spectrometer (the MoQTOF), for a number of protein systems. Two haemoproteins, cytochrome c and haemoglobin, have been characterised and rotationally-averaged collision cross-sections for a number of multimeric species are p

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48

Knapman, Thomas William. "Structural analysis of biomolecules by nanoESI and travelling wave ion mobility spectrometry-mass spectrometry." Thesis, University of Leeds, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535122.

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49

Gwak, Seongshin. "Comprehensive Analysis of Emerging New Psychoactive Substances by Ion Mobility Spectrometry and Mass Spectrometry." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2291.

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In the new era of drug abuse, the proliferation of new psychoactive substances (NPS), commonly referred to as designer drugs or legal highs, has been a global concern. These substances are produced to circumvent current legislation for controlled substances with minor modifications in their chemical structure. Although many efforts have been made previously, the characterization of such substances are still challenging because of (1) the continual emergence of newly identified substances, (2) the lack of a universal screening test for NPS that are structurally similar to each other, and (3) th

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50

Tumey, Scott Joseph. "A gas-injection negative ion source for accelerator mass spectrometry." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1977.

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Thesis (Ph. D.)--University of Maryland, College Park, 2004.<br>Thesis research directed by: Chemistry. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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