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Dissertations / Theses on the topic 'Ion mobility spectrometer (IMS)'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Kwasnik, Mark. "Development and fundamental characterization of a nanoelectrospray ionization atmospheric pressure drift time ion mobility spectrometer." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33879.

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Drift time ion mobility spectrometry (DTIMS) is a rapid post ionization gas-phase separation technique that distinguishes between compounds based on their differences in reduced mass, charge and collisional cross-section while under a weak, time-invariant electric field. Standalone DTIMS is currently employed throughout the world for the detection of explosives, drugs and chemical-warfare agents. The coupling of IMS to MS (IM-MS) has enabled the performance of time-nested multidimensional separations with high sample throughput and enhanced peak capacity, allowing for the separation of ions no

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2

Lu, Yao. "Forensic Applications of Gas Chromatography-Differential Mobility Spectrometry, Gas Chromatography/Mass Spectrometry, and Ion Mobility Spectrometry with Chemometric Analysis." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1267816777.

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3

Esposito, Anne Marie M. "Detection of Cocaine and its Interferents by Ion Mobility Spectrometry coupled with SIMPLSMA and ALS." Ohio University Art and Sciences Honors Theses / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ouashonors1493118770613501.

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4

Agbonkonkon, Nosa. "Counter-flow Ion Mobility Analysis: Design, Instrumentation, and Characterization." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd2136.pdf.

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5

Hariharan, Chandrasekhara B. [Verfasser], Jörg I. [Akademischer Betreuer] Baumbach, and Andreas [Gutachter] Schmid. "Implementation of multi capillary column ion mobility spectrometry (MCC-IMS) for medical and biological applications / Chandrasekhara B. Hariharan. Betreuer: Jörg I. Baumbach. Gutachter: Andreas Schmid." Dortmund : Universitätsbibliothek Dortmund, 2012. http://d-nb.info/1101475129/34.

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6

Cao, Libo. "Nonlinear Wavelet Compression Methods for Ion Analyses and Dynamic Modeling of Complex Systems." Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1107790393.

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7

Ruszkiewicz, Dorota M. "The secret life of small alcohols : the discovery and exploitation of fragmentation, adduct formation and auto-modification phenomena in differential ion mobility spectrometry leading to next-generation toxicity screening." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/23270.

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The research presented in this thesis started with the idea to study alcohols as modifiers and dopants in differential ion mobility spectrometry (d-IMS) to produce complicated chemical signatures to explore a concept of chemical labels for product security application. D-IMS is a gas phase atmospheric pressure separation and detection technique which distinguishes compounds based on differences in their ions mobility as their travel under a low and high electric field. The hypothesis was that alcohols will form typical d-IMS products such as protonated monomers and proton bound cluster ions. H

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8

Young, Mimy. "Evaluation of Non-Contact Sampling and Detection of Explosives using Receiver Operating Characteristic Curves." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/994.

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The growing need for fast sampling of explosives in high throughput areas has increased the demand for improved technology for the trace detection of illicit compounds. Detection of the volatiles associated with the presence of the illicit compounds offer a different approach for sensitive trace detection of these compounds without increasing the false positive alarm rate. This study evaluated the performance of non-contact sampling and detection systems using statistical analysis through the construction of Receiver Operating Characteristic (ROC) curves in real-world scenarios for the detecti

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9

Shi, Xun Xun. "Intelligent Differential Ion Mobility Spectrometry (iDMS): A Machine Learning Algorithm that Simplifies Optimization of Lipidomic Differential Ion Mobility Spectrometry Parameters." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42794.

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Glycosphingolipids such as α- and β-glucosylceramides (GlcCers) and α- and β- galactosylceramides (GalCers) are stereoisomers differentially synthesized by gut bacteria and their mammalian hosts in response to environmental insult. Thus, lipidomic assessment of α- and β-GlcCers and α- and β-GalCers is crucial for inferring biological functions and biomarker discovery. However, simultaneous quantification of these stereoisomeric lipids is difficult due to their virtually identical structures. Differential mobility mass spectrometry (DMS), as an orthogonal separation to high performance liquid c

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10

Graf, Alexander. "Entwicklung eines miniaturisierten Ionenfilters und Detektors für die potentielle Anwendung in Ionenmobilitätsspektrometern." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-163935.

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Die Ionenmobilitätsspektrometrie ermöglicht eine selektive Detektion von niedrigkonzentrierten Gasen in Luft. Darauf beruhende Analysegeräte können verhältnismäßig einfach umgesetzt werden und in vielfältigen mobilen Einsatzszenarien wie der Umweltanalytik Anwendung finden. Die vorliegende Dissertation gibt einen Überblick über die Grundlagen der Ionenmobilitätsspektrometrie und setzt die funktionellen Teilkomponenten Ionenfilter und Ionendetektor mit Mikrosystemtechniken um. Dafür werden Möglichkeiten aus dem Stand der Technik vorgestellt und eine für die Umsetzung optimale Variante identifi

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11

Deschamps, Estelle. "Développement de méthodologies pour l'étude du lipidome d'isolats de Pseudomonas aeruginosa provenant d'un patient atteint d'une infection pulmonaire chronique. Determination of the collision cross sections of cardiolipins and phospholipids from Pseudomonas aeruginosa by traveling wave ion mobility spectrometry-mass spectrometry using a novel correction strategy Membrane phospholipid composition of Pseudomonas aeruginosa grown in a cystic fibrosis mucus-mimicking medium UHPLC-MS(/MS) investigation of the membrane phospholipid composition of Pseudomonas aeruginosa isolated from the lungs of a cystic fibrosis patient with a bronchial infection." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMR054.

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Pseudomonas aeruginosa est une bactérie très pathogène pour les patients atteints de la mucoviscidose. De plus, certaines souches sont multi-résistante aux antibiotiques. Peu d’antibiotiques actuels ciblent ses lipides membranaires, alors qu’il s’agit d’une barrière de protection très efficace pour P. aeruginosa. L’objectif de cette thèse est de mettre au point une méthodologie permettant l’analyse du lipidome de souches de P. aeruginosa isolées de patients atteint de la mucoviscidose. Dans un premier temps, les méthodes d’analyse ont été développées et appliquées sur la souche de laboratoire

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12

Laatiaoui, Mustapha. "Development of an Ion Mobility Spectrometer for Heavy Element Research." Diss., lmu, 2010. http://nbn-resolving.de/urn:nbn:de:bvb:19-110596.

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13

Hupin, Sébastien. "Caractérisation d’auto-assemblages de polyoxométallates hybrides organiques-inorganiques par spectrométrie de mobilité ionique couplée à la spectrométrie de masse." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR062.

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Les polyoxométallates (POM) sont des composés anioniques constitués par l’assemblage de polyèdres d’oxydes métalliques {MOy}, (avec M, MoVI ou WVI) reliés entre eux par des atomes d'oxygène. Les POM forment ainsi une classe remarquable de clusters d’oxydes métalliques inorganiques nanométriques, avec une grande variété de charges et de structures. Il est possible de former des systèmes hybrides incluant la partie inorganique du POM et une partie organique greffée, permettant d’apporter de nouvelles fonctionnalités aux POM, tel que l’auto-assemblage. Nous avons consacré ces travaux de thèse à l

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14

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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15

McCullough, Bryan John. "Development of an ion mobility mass spectrometer to study gas phase conformations of biomolecules." Thesis, University of Edinburgh, 2007. http://hdl.handle.net/1842/15325.

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Design, development and implementation of a new Ion Mobility capable Mass Spectrometer – the MoQToF – are presented. The instrument is a Micromass Q-ToF modified to include a temperature regulated drift cell. Initial testing of the instrument to measure cross sections of well characterised proteins (cytochrome C, ubiquitin and lysozyme) in a range of charge states is described, showing the apparatus to perform well in comparison with values reported by others on analogous instruments. Ion mobility data is presented on a number of novel systems from small peptides to large proteins. The largest

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16

Morris, Andrew. "Charaterisation of a novel field asymmetric ion mobility spectrometer and its evaluation for non-traditional applications." Thesis, Open University, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.537006.

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17

Lai, Hanh Tuyet. "The Construction and Optimization on an Ion Mobility Spectrometer for the Analysis of Explosives and Drugs." FIU Digital Commons, 2010. http://digitalcommons.fiu.edu/etd/169.

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Today, over 15,000 Ion Mobility Spectrometry (IMS) analyzers are employed at worldwide security checkpoints to detect explosives and illicit drugs. Current portal IMS instruments and other electronic nose technologies detect explosives and drugs by analyzing samples containing the headspace air and loose particles residing on a surface. Canines can outperform these systems at sampling and detecting the low vapor pressure explosives and drugs, such as RDX, PETN, cocaine, and MDMA, because these biological detectors target the volatile signature compounds available in the headspace rather than t

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18

Verbeck, Guido Fridolin. "Development of a variable-temperature ion mobility/ time-of-flight mass spectrometer for separation of electronic isomers." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2310.

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The construction of a liquid nitrogen-cooled ion mobility spectrometer coupled with time-of-flight mass spectrometry was implemented to demonstrate the ability to discriminate between electronic isomers. Ion mobility allows for the separation of ions based on differing cross-sections-to-charge ratio. This allows for the possible discrimination of species with same mass if the ions differ by cross-section. Time-offlight mass spectrometry was added to mass identify the separated peak for proper identification. A liquid nitrogen-cooled mobility cell was employed for a two-fold purpose. First, the

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19

Stone, Earle Gregory. "Development of a MALDI-Ion Mobility-Surface-Induced Dissociation-Time-of-flight-mass spectrometer for the analysis of peptides and proteins." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/119.

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Peptide sequencing by surface-induced dissociation (SID) on a MALDI-Ion Mobility-orthogonal-TOF mass spectrometer is demonstrated. The early version of the instrument used for proof-of-concept experiments achieves a mobility resolution of approximately 20 and TOF mass resolution better than 200. Peptide sequences of four peptides from a tryptic digest of cytochrome c (ca. 1 pmol deposited) were obtained. The advantage of IM-SID-o-TOFMS is that a single experiment can be used to simultaneously measure the molecular weights of the tryptic peptide fragments (peptide mass mapping) and partial se

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20

Steltz, Tatjana. "Kopplung der Curie-Punkt-Pyrolyse mit einem Ionenmobilitätsspektrometer zur Kunststoffidentifizierung / Coupling of Curie point pyrolysis with an ion mobility spectrometer for identification of synthetic materials." Gerhard-Mercator-Universitaet Duisburg, 2004. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-11112004-121727/.

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In this work an efficient system on the basis of the Curie point pyrolysis and the ion mobility spectrometry will be developed. Ten types of polymeric materials were examined as test-substances: polyurethanes, polyvinyl chloride, acrylonitrile -, 1,3-butadiene -, styrene-copolymer, polystyrene, polybutylene terephthalate, polymethyl methacrylate, polyamide, polyethylene, polypropylene and polycarbonate. To the evaluation of the analysis-results cluster analysis and the radius-basis-function-network were used. The received results have shown that the PY/IMS-system is well suitable in connection

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21

Zhou, Mowei. "Incorporation of Surface Induced Dissociation into a Commercial Ion Mobility - Tandem Mass Spectrometer and Application of Mass Spectrometry Methods for Structural Analysis of Non-covalent Protein Complexes." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1373977026.

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22

Le, Maître Johann. "Développement de la spectrométrie de masse à ultra- haute résolution associée à la spectrométrie de mobilité ionique pour la caractérisation de coupes pétrolières lourdes. structural analysis of heavy oil fractions afterr hydrodenitrogenation by high-resolution tandem mass spectrometry and ion mobility spectrometry Structural analysis of neutral nitrogen compounds refractory to the hydrodenitrogenation process of heavy oil fractions by high-resolution tandem mass spectrometry and ion mobility-mass spectrometry Chemical characterization of 15 biocrudes obtained from hydrothermal liquefaction of industrially cultivated wild micro algae Chemical characterization with different analytical techniques, a way to understand the process: Case of the paraffinic base oil production line Exploring complex mixtures by cyclic ion mobility high-resolution mass spectrometry – Application towards Petroleum. Simulation and modeling of Collision Cross Section for structural elucidation of heavy oil fraction by ion mobility-mass spectrometry: Using polyaromatic hydrocarbons compounds mixture as calibration standard Characterization of sulfoxides compounds in dimeric distribution of heavy oil fractions by positive-ion electrospray ionization FTICR mass spectrometry Structural analysis of Petroporphyrins from asphaltene by trapped ion mobility coupled with a Fourier transform ion cyclotron resonance mass spectrometer. Cyclic ion mobility spectrometry coupled to high-resolution time-of-flight mass spectrometry equipped with atmospheric solid analysis probe for the molecular characterization of combustion particulate matter. Structural study of analogues of Titan’s haze by trapped ion mobility coupled with a Fourier transform ion cyclotron mass spectrometer." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMR051.

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L'évolution des réserves de pétrole implique l'utilisation en raffinerie de pétroles bruts non conventionnels, bien souvent plus lourds et donc difficiles à caractériser. Les produits pétroliers sont en effet des mélanges chimiques extrêmement complexes. La partie légère et volatile peut être analysée par chromatographie en phase gazeuse couplée à la spectrométrie de masse (GC/MS), permettant l'identification des composés par l'utilisation de mesures de masses précises et de modèles de fragmentation. Cependant ces techniques sont inadaptées à l'analyse des fractions lourdes. Dans la pratique,

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23

Moreira, Raphael Garcia. "Fabricação e modelagem de uma nova geometria para espectrometria de mobilidade iônica de tolueno, propanol e água com elevada relação sinal-ruído." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3140/tde-18072018-135559/.

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Neste trabalho é apresentada uma nova geometria e os critérios de projeto para dispositivos de espectrometria de mobilidade iônica, com objetivo de aumentar a relação entre sinal e ruído detectados pelos eletrômetros que compõem a região de detecção, quando associado à ionização baseada em descargas elétricas que tipicamente emitem maior interferência eletromagnética em relação a outros tipos de ionização. A geometria e os critérios de projeto foram estabelecidos com o auxílio do simulador de trajetórias iônicas SIMION versão 8.1 e comparada com espectrômetros de mobilidade iônica do estado-da

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24

Maillard, Julien. "Composition chimique du brouillard de Titan par mobilité ionique couplée à la spectrométrie de masse haute résolution Comparison of soluble and insoluble organic matter in analogues of Titan's aerosols Optimization of ion trajectories in a dynamically harmonized Fourier-Transform Ion Cyclotron Resonance cell using a Design of Experiments strategy Structural Study of Analogues of Titan's Haze by Trapped Ion Mobility Coupled with a Fourier Transform Ion Cyclotron Mass Spectrometer. High resolution mass spectrometry for future space missions: comparative analysis of complex organic matter with LAb-CosmOrbitrap and LDI-FTICR. Structural elucidation of soluble organic matter: Application to Titan's haze. Dark-ageing of analogues of aerosols in the atmosphere of the early Earth." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASV023.

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Bien que l’enjeu prébiotique soit important, l’étude des aérosols présents dans l’atmosphère de Titan, la plus grosse lune de Saturne, reste un challenge pour la communauté scientifique. En effet, les données récoltées par les sondes Voyager et Cassini-Huygens ont permis de récupérer les premières informations mais pas de percer les secrets de ce brouillard de particules. Le but de cette thèse est d’étudier la composition chimique de ces aérosols grâce à leur reproduction sur Terre. La première approche présentée est la caractérisation moléculaire par le biais de la spectrométrie de masse à ul

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25

Alho, Luís Miguel Pereira Domingues. "Automated quantitative analysis of MCC-IMS spectra." Master's thesis, 2014. http://hdl.handle.net/10362/14959.

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Ion Mobility Spectrometry coupled with Multi Capillary Columns (MCC -IMS) is a fast analytical technique working at atmospheric pressure with high sensitivity and selectivity making it suitable for the analysis of complex biological matrices. MCC-IMS analysis generates its information through a 3D spectrum with peaks, corresponding to each of the substances detected, providing quantitative and qualitative information. Sometimes peaks of different substances overlap, making the quantification of substances present in the biological matrices a difficult process. In the present work we use peak

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26

Graf, Alexander. "Entwicklung eines miniaturisierten Ionenfilters und Detektors für die potentielle Anwendung in Ionenmobilitätsspektrometern." Doctoral thesis, 2014. https://tud.qucosa.de/id/qucosa%3A28629.

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Die Ionenmobilitätsspektrometrie ermöglicht eine selektive Detektion von niedrigkonzentrierten Gasen in Luft. Darauf beruhende Analysegeräte können verhältnismäßig einfach umgesetzt werden und in vielfältigen mobilen Einsatzszenarien wie der Umweltanalytik Anwendung finden. Die vorliegende Dissertation gibt einen Überblick über die Grundlagen der Ionenmobilitätsspektrometrie und setzt die funktionellen Teilkomponenten Ionenfilter und Ionendetektor mit Mikrosystemtechniken um. Dafür werden Möglichkeiten aus dem Stand der Technik vorgestellt und eine für die Umsetzung optimale Variante identifi

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27

Laatiaoui, Mustapha [Verfasser]. "Development of an ion mobility spectrometer for heavy element research / vorgelegt von Mustapha Laatiaoui." 2009. http://d-nb.info/100027487X/34.

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28

Nahin, Md Minal. "Modeling and experimenting a novel inverted drift tube device for improved mobility analysis of aerosol particles." Thesis, 2017. https://doi.org/10.7912/C2HW83.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Ion Mobility Spectrometry (IMS) is an analytical technique for separation of charged particles in the gas phase. The history of IMS is not very old, and in this century, the IMS technique has grown rapidly in the advent of modern instruments. Among currently available ion mobility spectrometers, the DTIMS, FAIMS, TWIMS, DMA are notable. Though all the IMS systems have some uniqueness in case of particle separation and detection, however, all instruments have common shortcomings. They lack in resolution, which is independent of mobili

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29

Sun, Wenjian. "Development of a maldi − ion mobility− surface-induced dissociation − time-of-flight mass spectrometer with novel collision source configurations for high throughput peptide sequencing." Thesis, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-2454.

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A Matrix-assisted Laser Desorption/Ionization (MALDI) – Ion Mobility (IM) – Surface-induced Dissociation (SID) – Time-of-Flight (TOF) instrument with three different collision source configurations was developed in order to improve the SID performance in high throughput peptide sequencing. The first version of the instrument was equipped with an angle resolved SID source in order to maximize the collection efficiency of the SID scattering ions. An orthogonal TOF was also implemented as the second MS stage in this instrument to increase mass resolution. The second version of the instrument was

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30

May, Jody C. "Development of A Cryogenic Drift Cell Spectrometer and Methods for Improving the Analytical Figures of Merit for Ion Mobility-Mass Spectrometry Analysis." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7022.

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A cryogenic (325-80 K) ion mobility-mass spectrometer was designed and constructed in order to improve the analytical figures-of-merit for the chemical analysis of small mass analytes using ion mobility-mass spectrometry. The instrument incorporates an electron ionization source, a quadrupole mass spectrometer, a uniform field drift cell spectrometer encased in a cryogenic envelope, and an orthogonal geometry time-of-flight mass spectrometer. The analytical benefits of low temperature ion mobility are discussed in terms of enhanced separation ability, ion selectivity and sensitivity. The disti

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31

Prasanna, N. "Study Of The B=2/5 Resonance And Resonance Excitation In Nonlinear Paul Traps." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1462.

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