Download or read book Surface Chemistry Application of Laser Desorption Coupled with Fourier Transform Mass Spectrometry written by Yunzhi Li and published by . This book was released on 1992 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Desorption chemical Ionization of Peptides Using Fourier Transform Mass Spectrometry written by Johnny Paul Speir and published by . This book was released on 1993 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lasers and Mass Spectrometry written by David M. Lubman and published by Oxford University Press. This book was released on 1990-04-12 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contributors to this volume focus on the fundamentals of the technique of analyzing material based on the atomic weight of the species, using the power and definition of lasers to enable measurement of smaller quantities and more finely localized particles. Each chapter deals with a particular application area and should be sufficient to form an entry point for the utilization of mass spectrometry by graduate students and researchers. The book provides the first full discussion of the new techniques of laser applications in the field.

Download or read book Laser induced Thermal Desorption and Fourier Tranform i e Transform Mass Spectrometry for the Analysis of Molecular Desorption on Pd 111 written by Nick Alan Thornburg and published by . This book was released on 1997 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanisms and Applications of Laser Desorption Fourier Transform Mass Spectrometry written by M. Paul Chiarelli and published by . This book was released on 1988 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Spectroscopy And Photochemistry On Metal Surfaces In 2 Parts Part 1 written by Hai-lung Dai and published by World Scientific. This book was released on 1995-12-16 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using lasers to induce and probe surface processes has the advantages of quantum state specificity, species selectivity, surface sensitivity, fast time-resolution, high frequency resolution, and accessibility to full pressure ranges. These advantages make it highly desirable to use light to induce, control, or monitor surface chemical and physical processes. Recent applications of laser based techniques in studying surface processes have stimulated new developments and enabled the understanding of fundamental problems in energy transfer and reactions. This volume will include discussions on spectroscopic techniques, energy transfer, desorption dynamics, and photochemistry.

Download or read book Laser Spectroscopy and Photochemistry on Metal Surfaces written by Hai-Lung Dai and published by World Scientific. This book was released on 1995 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using lasers to induce and probe surface processes has the advantages of quantum state specificity, species selectivity, surface sensitivity, fast time-resolution, high frequency resolution, and accessibility to full pressure ranges. These advantages make it highly desirable to use light to induce, control, or monitor surface chemical and physical processes. Recent applications of laser based techniques in studying surface processes have stimulated new developments and enabled the understanding of fundamental problems in energy transfer and reactions. This volume will include discussions on spectroscopic techniques, energy transfer, desorption dynamics, and photochemistry.

Download or read book Laser desorption ionization Fourier transform mass spectrometry written by Jeremiah Duffy Hogan and published by . This book was released on 1991 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Surface Assisted Laser Desorption Ionization and Its Analytical Application in Imaging Mass Spectrometry written by Ho-Wai Tang and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Studies on surface-assisted laser desorption/ionization and its analytical application in imaging mass spectrometry" by Ho-wai, Tang, 鄧浩維, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Surface-Assisted Laser Desorption/Ionization Mass Spectrometry (SALDI-MS) is an analytical technique enabling direct chemical analysis of solid samples. Analytes could be desorbed/ionized upon nitrogen laser irradiation from a SALDI substrate-coated sample, then analyzed by MS. The substrate is involved in the transfer of laser energy to the analytes, and eventually assists the desorption/ionization of analytes. The analytical performance of SALDI-MS, such as detection sensitivity, is dependent on different parameters of the substrate, such as size, morphology and form. In this thesis, the effects of several substrate parameters on the SALDI process were investigated. SALDI-MS based Imaging Mass Spectrometry (IMS) method was also developed using efficient SALDI substrate identified in the fundamental studies. IMS is a chemical-specific mapping technique which allows parallel mapping of multiple analytes in solid samples. The desorption mechanism of SALDI is investigated using two groups of substrate, the carbon allotropes and the noble metal nanoparticles. Ion desorption efficiency and internal energy transfer were probed and correlated in carbon-based SALDI. It was found that the ion desorption efficiency and internal energy transfer was in opposite order. Substrate that transferred more internal energy to ions did not show higher ion desorption efficiency. This result could not be explained by the Thermal Desorption model which was a generally believed mechanism of the SALDI desorption process. A non-thermal model, the Phase Transition model is proposed to account for the SALDI desorption process. The Phase Transition model suggests that the substrate is melted/ restructured upon laser irradiation, and this will assist ion desorption. The Phase Transition model is supported by the morphological change of carbon substrates after SALDI and high initial velocity of ions desorbed by carbon-based SALDI (> 1,000 ms-1). SALDI-MS is useful for small molecule analysis due to the relatively clean background in the low mass region. SALDI-IMS is developed and applied to the imaging of spatial distribution of small molecules in forensic and biological samples. Gold nanoparticles (AuNPs) was selected as the substrate from several other noble metal NPs. A solvent-free method, argon ion sputtering, was employed for coating AuNPs on sample surface prior to SALDI-IMS analysis. Fine details of the samples, such as the fine pattern of latent fingerprints and handwriting on questioned documents can be preserved and imaged reliably by avoiding the use of solvent. Fatty acids, drugs and ink components can be imaged in forensic samples including latent fingerprints, banknotes and checks. The solvent-free SALDI-IMS method was also applied to image the distribution of metabolites in intact animal tissues. Spatial distributions of neurotransmitters, nucleobases and fatty acids can be imaged from mouse brain and tumor tissue sections. DOI: 10.5353/th_b4714555 Subjects: Mass spectrometry Imaging systems

Download or read book Theoretical Advances and Laser Desorption Applications in Fourier Transform Ion Cyclotron Resonance Mass Spectrometry written by Michael Alan May and published by . This book was released on 1994 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications written by United States. National Bureau of Standards and published by . This book was released on 1986 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cumulated Index Medicus written by and published by . This book was released on 1989 with total page 1384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications of the National Institute of Standards and Technology Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1991 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Food Toxicology and Forensics written by Charis M. Galanakis and published by Academic Press. This book was released on 2020-11-11 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food Toxicology and Forensics presents an overview on these subjects, along with the analytical tools necessary to handle the complexity of the issues at play between them. The book discusses the presence of foreign substances in food despite forensic analysis and supports the scientific community, laboratories and regulatory bodies in their aim to identify food fraud. Topics include the forensic attribution profiling of food by liquid chromatography (LC), contemporary mass spectrometry (MS), tandem mass spectrometry (MS/MS) and liquid chromatography coupled to mass spectrometry (LC-MS), the application of ambient ionization mass spectrometry (AIMS) techniques for the analysis of food samples, and more. Includes toxicology and analytical methods for the determination of certain toxicants in foods Discusses legal, economic and biological issues of food adulteration and food fraud Presents the latest allergen measurement techniques and post reviews of allergen non-compliance cases Provides methods of validation of DNA biochip for species identification in food forensic science

Download or read book Cells Proteins and Materials written by Stuart Cooper and published by CRC Press. This book was released on 2003-04-01 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proteins, Cells and Materials contains a collection of articles, which constitute together the complete Festschrift in honor of the 65th birthday of Dr. John L. Brash. For the first time these articles - published previously in several special issues of the Journal of Biomaterials Science Polymer Edition - have been compiled into one comprehensive