Characterization Imaging And Quantitation Of Small Molecules By Ambient Ionization Mass Spectrometry
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Characterization Imaging And Quantitation Of Small Molecules By Ambient Ionization Mass Spectrometry
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Author : Shamina Saiyara Prova
language : en
Publisher:
Release Date : 2019
Characterization Imaging And Quantitation Of Small Molecules By Ambient Ionization Mass Spectrometry written by Shamina Saiyara Prova and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
For more than a century mass spectrometry has been a well-known technique in the field of chemical analytics. Its selectivity and sensitivity has made it popular in various fields. From analysis of pure organics, its use is still being explored in the analysis of biomolecules, either purified or direct from tissue sections. For analyzing these vast arrays of molecules, typically the front end is modulated depending upon the need of the user. For direct analysis of a sample of interest, ionization techniques such as DESI, PS, MALDI, etc are incorporated into the front of the mass spectrometer. In this work, the ambient ionization techniques, DESI-MS and PS-MS was modulated for characterization, imaging and quantification of small molecules. The use of DESI-MS and PS-MS in the field of forensics, microbiology and pharmaceutics is described. With the optimization of the front end modes, better sensitivity, selectively and robustness was ensured.
Ambient Ionization Mass Spectrometry
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Author : Marek Domin
language : en
Publisher: Royal Society of Chemistry
Release Date : 2014-11-14
Ambient Ionization Mass Spectrometry written by Marek Domin and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-14 with Science categories.
Ambient ionization has emerged as one of the hottest and fastest growing topics in mass spectrometry enabling sample analysis with minimal sample preparation. Introducing the subject and explaining the basic concepts and terminology, this book will provide a comprehensive, unique treatise devoted to the subject. Written by acknowledged experts, there are full descriptions on how new ionization techniques work, with an overview of their strengths, weaknesses and applications. This title will bring the reader right up to date, with both applications and theory, and will be suitable as a tutorial text for those starting in the field from a variety of disciplines.
Ambient Mass Spectroscopy Techniques In Food And The Environment
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Author : Leo M.L. Nollet
language : en
Publisher: CRC Press
Release Date : 2019-01-30
Ambient Mass Spectroscopy Techniques In Food And The Environment written by Leo M.L. Nollet and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-30 with Health & Fitness categories.
Ambient mass spectrometry—that is the use of mass spec but in the atmospheric environment—has been widely employed in food and environmental analysis. Ambient Mass Spectroscopy Techniques in Food and the Environment presents the theoretical underpinnings of mass spectrometry, and the benefits and pitfalls of ambient mass spectrometry, as well as the latest developments of the technique, in the analysis of food and environmental parameters. It describes methods that enable the detection of surface materials like waxes, alkaloids, flavors, or pesticides by plainly exposing the corresponding items to the ionization region of the interface, without harm to samples. Features: Explains the theoretical aspects of ambient mass spectrometry Describes how to use ambient MS techniques for food safety, authenticity, and traceability screening Lists the benefits of ambient MS in analysis of food and environmental parameters Covers recent developments of ambient MS in analysis of food and environmental parameters The specialized work provides insight to professionals practicing in food and the environment, including food scientists, food engineers, food biotechnologists, chemical engineers, and those working in research labs, universities, and government regulatory agencies.
Mass Spectrometry Imaging Of Small Molecules
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Author : Lin He
language : en
Publisher: Humana Press
Release Date : 2014-11-01
Mass Spectrometry Imaging Of Small Molecules written by Lin He and has been published by Humana Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-01 with Medical categories.
Mass Spectroscopy Imaging (MSI) has emerged as an enabling technique to provide insight into the molecular entities within cells, tissues and whole-body samples and to understand inherent complexities within biological metabolomes. In Mass Spectrometry Imaging of Small Molecules: Methods and Protocols, experts in the MSI field present techniques for 2D and 3D visualization and quantification of a wide array of small molecular species present in biologically relevant samples. Chapters provide detailed operational instructions from sample preparation to method selection, from comparative quantification to structural identification and from data collection to visualization of small molecule mapping in complex samples. Written in the successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols and notes on troubleshooting and avoiding known pitfalls. Authoritative and easily accessible, Mass Spectrometry Imaging of Small Molecules: Methods and Protocols aims to bring the rapidly maturing methods of metabolic imaging to life science researchers and to minimize technical intimidation in adapting new technological platforms in biological research.
Characterization Of Small Molecules And Ions By Atmospheric Pressure Ionization Mass Spectrometry
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Author : Maleesha De Silva
language : en
Publisher:
Release Date : 2021
Characterization Of Small Molecules And Ions By Atmospheric Pressure Ionization Mass Spectrometry written by Maleesha De Silva and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Mass spectrometry (MS) has become a widely used technique for the characterization of a wide range of substances in diverse fields. The selection of appropriate ionization techniques, source parameters, charge carriers based on the analyte’s polarity is essential in MS as only the ions are detected. When using a soft ionization technique, single stage-MS at best provides only chemical composition; thus, tandem MS is needed to determine structural information and dissociation pathways. This dissertation focuses on the characterization of various small molecules and ions using different ionization techniques, charge carriers, and collision-induced dissociation (CID). In Chapter II, commercially available ionic liquid (IL) cations, specifically imidazolium-based IL cations with different side-chain chemistries, were characterized by CID-MS. The imidazolium-based IL cations have diverse dissociations pathways depending on the nature of the side chain (aliphatic or aromatic) or the functional groups (allyl, vinyl, alcohol, methoxy, nitro) present on the side chain. Additionally, it was observed that some IL cations undergo thermal degradation under normal operating temperatures of electrospray ~275 °C. A variety of experimental and complementary computational chemistry results are presented. In Chapter III, cis-3-hydroxyproline (c3hPro) and cis-4-hydroxyproline (c4hPro) isomers were differentiated upon lithiation using CID-MS. The CID-MS of [c4hPro+Li]+ produces three primary fragmentation pathways, namely the neutral losses of H2O, CO, and CO2; whereas CID-MS of [c3hPro+Li]+ produces only loss of CO2 in this same region. These observations may have analytical utility, and in this work, the experimental observations were explored with thermodynamic and transition state calculations to better understand the processes. In Chapter IV, the accurate mass of synthetic monomers including PAH perfluorocycloalkene monomers and their precursors were measured and reported with a publication-quality mass accuracy using atmospheric pressure chemical ionization (APCI)-MS. Additionally, the effect of solution flow rate, ionization mode, source parameters (such as vaporization temperature, dry gas temperature and dry gas flow rate, nebulizer gas pressure), acidification, and different solvent systems on APCI-MS signal intensity were studied.
Mass Spectrometry Imaging Of Small Molecules
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Author : Young-Jin Lee
language : en
Publisher: Humana
Release Date : 2021-12-14
Mass Spectrometry Imaging Of Small Molecules written by Young-Jin Lee and has been published by Humana this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-12-14 with Science categories.
This volume presents updated methods and new developments in the field of mass spectrometry imaging. Chapters guide readers through four parts covering imaging, software, data analysis, new instrumentation, and new methodological approaches. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Mass Spectrometry Imaging of Small Molecules aims to be a useful practical guide to researchers to help further their study in this field.
Advancements In Ambient Ionization And Maldi Mass Spectrometry Imaging Methods And Their Application In Disease Diagnosis And Characterization
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Author : Monica Lin
language : en
Publisher:
Release Date : 2023
Advancements In Ambient Ionization And Maldi Mass Spectrometry Imaging Methods And Their Application In Disease Diagnosis And Characterization written by Monica Lin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
Direct analysis using mass spectrometry (MS) techniques provide a powerful approach to investigate the molecular composition and spatial distribution of complex samples with high sensitivity and specificity. In particular, these techniques have been widely applied to achieve rapid molecular analysis of complex clinical samples including native tissue samples and biospecimens. Several types of direct analysis MS techniques have been developed for tissue analysis including a variety of ambient ionization MS techniques and matrix-assisted laser desorption ionization (MALDI) MS. Notably, both approaches are highly capable of performing molecular imaging of endogenous metabolites, lipids, and proteins to characterize tissue samples. Furthermore, through applying ambient ionization and MALDI MS imaging techniques, new insights into disease state can be learned by investigating the correlation between spatially resolved molecular information with histological evaluation in tissue samples. Although several other types of direct analysis MS techniques have been developed, this dissertation focuses on advancements using solvent-based ambient ionization MS (e.g. desorption electrospray ionization (DESI)) and MALDI MS imaging methods for tissue analysis and disease characterization. In Chapter 2, a fundamental and systematic investigation of the affect of solvent properties on molecular extraction processes in solvent-based ambient ionization was performed. In Chapter 3, the performance of DESI MS imaging for the analysis and statistical classification of thyroid fine needle aspiration (FNA) biopsies using different solvents, sources, and high-performance MS systems was evaluated. Next, Chapter 4 describes the development of a sample preparation method for MALDI MS imaging to improve detection of various endogenous proteins by selectively reducing signal from hemoglobin proteins in blood-rich tissues. Lastly, in Chapter 5, various MALDI imaging MS methods were applied to characterize the protein and N-glycan molecular signatures in endometriosis tissues and provide new insights into possible mechanisms of endometriosis development and progression. Collectively, this dissertation provides insights into the fundamental aspects, method developments, and applications of direct analysis MS techniques including solvent-based ambient ionization MS and MALDI MS imaging for tissue analysis. Furthermore, this dissertation showcases the exciting and significant potential of direct analysis MS techniques to solve current challenges in the clinic and provide new insights in healthcare and medicine
Ambient Ionization Mass Spectrometry In Life Sciences
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Author : Kei Zaitsu
language : en
Publisher: Elsevier
Release Date : 2019-11-06
Ambient Ionization Mass Spectrometry In Life Sciences written by Kei Zaitsu and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-11-06 with Science categories.
Ambient Ionization Mass Spectrometry in Life Sciences: Principles and Applications is a systematic introduction to this rapidly expanding area of study. Underlying principles of each technique are explained in detail, along with discussions on their applications across life science disciplines. Ambient ionization has recently emerged as one of the hottest and fastest growing topics in mass spectrometry, hence this book is not just for analysts and researchers who use and study mass spectrometry. This volume would be of interest to anyone who works in or studies analytical chemistry, omics sciences (including metabolomics), pharmacokinetics, forensic science or drug analysis. Covers the most up-to-date techniques, including DART, DCBI, DESI, PESI, PSI, REIMS and laser-based ambient ionization Includes easy-to-understand pros and cons of each ionization technique to aid in decision-making Provides plentiful examples of life science applications
Laser Desorption Ionization Mass Spectrometry For Direct Profiling And Imaging Of Small Molecules From Raw Biological Materials
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Author :
language : en
Publisher:
Release Date : 2008
Laser Desorption Ionization Mass Spectrometry For Direct Profiling And Imaging Of Small Molecules From Raw Biological Materials written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Matrix-assisted laser desorption/ionization(MALDI) mass spectrometry(MS) has been widely used for analysis of biological molecules, especially macromolecules such as proteins. However, MALDI MS has a problem in small molecule (less than 1 kDa) analysis because of the signal saturation by organic matrixes in the low mass region. In imaging MS (IMS), inhomogeneous surface formation due to the co-crystallization process by organic MALDI matrixes limits the spatial resolution of the mass spectral image. Therefore, to make laser desorption/ionization (LDI) MS more suitable for mass spectral profiling and imaging of small molecules directly from raw biological tissues, LDI MS protocols with various alternative assisting materials were developed and applied to many biological systems of interest. Colloidal graphite was used as a matrix for IMS of small molecules for the first time and methodologies for analyses of small metabolites in rat brain tissues, fruits, and plant tissues were developed. With rat brain tissues, the signal enhancement for cerebroside species by colloidal graphite was observed and images of cerebrosides were successfully generated by IMS. In addition, separation of isobaric lipid ions was performed by imaging tandem MS. Directly from Arabidopsis flowers, flavonoids were successfully profiled and heterogeneous distribution of flavonoids in petals was observed for the first time by graphite-assisted LDI(GALDI) IMS.
Introduction To Spatial Mapping Of Biomolecules By Imaging Mass Spectrometry
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Author : Bindesh Shrestha
language : en
Publisher: Elsevier
Release Date : 2021-04-23
Introduction To Spatial Mapping Of Biomolecules By Imaging Mass Spectrometry written by Bindesh Shrestha and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-23 with Science categories.
Imaging mass spectrometry (MS) techniques are often utilized without an understanding of their underlying principles, making it difficult for scientists to determine when and how they can exploit MS to visualize their biomolecules of interest. Introduction to Spatial Mapping of Biomolecules by Imaging Mass Spectrometry is an essential reference to help scientists determine the status and strategies of biomolecule analysis, describing its many applications for diverse classes of biomolecules. The book builds a foundation of imaging MS knowledge by introducing ionization sources, sample preparation, visualization guidelines, molecule identification, quantification, data analysis, etc. The second section contains chapters focused on case studies on analyzing a biomolecule class of molecules. Case studies include an introduction/background, and a summary of successful imaging MS studies with illustrative figures and future directions. Provides the introductory foundations of imaging mass spectrometry for those new to the technique Organized by topic to facilitate a quick deep dive, allowing researchers to immediately apply the imaging MS techniques to their work Includes case studies summarizing the imaging MS techniques developed for the class of molecules