Download or read book Quantitative Analysis in Gas Chromatography low Power Atmospheric Pressure Helium Microwave induced Plasma Atomic Emission Interferometry and Ion Cyclotron Resonance Mass Spectroscopy written by Jeffrey Frank Loo and published by . This book was released on 1989 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantitative Gas Chromatography for Laboratory Analyses and On Line Process Control written by G. Guiochon and published by Elsevier. This book was released on 1988-06-01 with total page 811 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is an invaluable new book on quantitative gas chromatography which explains how the method can - or should - be used for accurate and precise analysis. Gas chromatography is firmly established as one of the few major methods for the quantitative analysis of complex mixtures. It is fast, accurate and inexpensive, with a broad range of applications. It has however become very complex and involved: over 200 stationary phases, more than 10 detector principles and several very different column types are available from among the catalogs of over 100 manufacturers and major retailers. The progressive changes in the nature of gas chromatography have created new needs for information which are not satisfied by the literature presently available.This book provides a complete discussion of all the problems involved in the achievement of quantitative analysis by gas chromatography, whether in the research laboratory, in the routine analysis laboratory or in process control. For this reason the presentation of theoretical concepts has been limited to the essential, while extensive explanations have been devoted to the various steps involved in the derivation of precise and accurate data. This starts with the selection of the instrumentation and column, continues with the choice of optimum experimental conditions, then calibration and ends with the use of correct procedures for data acquisition and calculations. Finally, there is almost always a way to reduce errors and an entire chapter deals with this single issue. Numerous relevant examples are presented.The first part of the book presents the theoretical background, simple enough to be understood by all analytical chemists, but still complete and up-to-date. It discusses the problems of flow dynamics, retention and band broadening. The changes in band profile associated with column overloading are explained without much recourse to mathematics. The second part describes the gas chromatograph and discusses the properties of each of its parts: gas flow and pressure controller sampling system, oven, column switching valves, detectors. The different implementations, their advantages and drawbacks are discussed and compared. In addition, three chapters present packed column technology, open tubular column technology and some sophisticated new phase systems, respectively. The new phase systems described use adsorbents, modified by coating or grafting organic phase, and carrier gases containing vapors which are sorbed by the stationary phase and modify it, such as steam. The third part discusses the applications in qualitative and quantitative analysis. Calibration, peak integration, sources of errors arising from the various parts of the instrument as well as from the measurement process itself are carefully described in four detailed chapters. Methods to carry out accurate and precise analysis are presented. A last chapter is devoted to process control analysis and gives a number of detailed examples of applications. A lexicon explaining the most important chromatographic terms and a detailed index complete the book.This is a book which no chemical analyst should be without. It should be on the library shelf of all universities, instrument companies and any laboratory and plant where gas chromatography is used.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1990 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mass Spectrometry Bulletin written by and published by . This book was released on 1991 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Investigation of Gas Chromatography Microwave Induced Plasma Atomic Emission Spectrometry for Element Specific Detection and Empirical Formulae Determination written by Kevin J. Slatkavitz and published by . This book was released on 1985 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Basic Gas Chromatography Mass Spectrometry written by F.W. Karasek and published by Elsevier. This book was released on 2012-12-02 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book begins by covering the basic principles of both gas chromatography (GC) and mass spectrometry (MS) to the extent necessary to understand and deal with the data generated in a GC-MS analysis. The focus then turns to the particular requirements created by a direct combination of these two techniques into a single instrumentation system. The data generated and their use are covered in detail. The role of the computer and its specific software receives special attention, especially in the matter of compound identification via mass spectral search techniques. GC-MS-computer instrumentation has reached such a plateau of excellence today that the present commercial systems will not be obsolete for a long time to come. Therefore, a detailed description of these systems is not only informative but is also pertinent to the subject matter of this book. Finally, representative applications and results obtained with GC-MS-computer techniques are presented and chosen in such a way as to permit extrapolation of specific applications to similar problems encountered by the reader. To aid the reader in mastering the subject matter and increase understanding, interpretation problems and suggested readings are included. The format is instructional, informative and application-oriented with material presented in such a way as to be useful to a broad spectrum of people.The book serves as a text in its own right.The software package Gas Chromatography-Mass Spectrometry: A Knowledge Base, by F.A. Settle, Jr. and M.A. Pleva provides rapid access to a wealth of current information in the GC-MS field. Its three diskettes (51/4 inch) allow the user three ways to access: the index mode, the tree mode and a keyword search mode. The package may be purchased separately and is available for the IBM-PC and compatibles.The software provides a valuable supplement to the book.

Download or read book Gas Chromatography Mass Spectrometry with Cold EI Leading the Way to the Future of GC MS written by Aviv Amirav and published by Scientific Research Publishing, Inc. USA. This book was released on 2021-08-30 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas chromatography-mass spectrometry (GC-MS) with supersonic molecular beams (SMB) (also named GC-MS with Cold EI) is based on GC and MS interface with a SMB and on the electron ionization (EI) of vibrationally cold analytes in the SMB (hence the name Cold EI) in a contact-free fly-through ion source. Cold EI improves all the central GC-MS performance aspects and brings a broad range of important benefits thereby leading the way to the future of GC-MS. Cold EI provides enhanced molecular ions combined with effective library-basedsample identification. Sample identification is further improved by the use of powerful TAMI software that is based on isotope abundance analysis and improved quadrupole mass accuracy for the provision of the sample elemental formula from its molecular ion group of isotopologues.

Download or read book Gas Chromatography and Mass Spectrometry A Practical Guide written by O. David Sparkman and published by Academic Press. This book was released on 2011-05-17 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Gas Chromatography and Mass Spectrometry: A Practical Guide follows the highly successful first edition by F.G. Kitson, B.S. Larsen, and C.N. McEwen (1996), which was designed as an indispensible resource for GC/MS practitioners regardless of whether they are a novice or well experienced. The Fundamentals section has been extensively reworked from the original edition to give more depth of an understanding of the techniques and science involved with GC/MS. Even with this expansion, the original brevity and simple didactic style has been retained. Information on chromatographic peak deconvolution has been added along with a more in-depth understanding of the use of mass spectral databases in the identification of unknowns. Since the last edition, a number of advances in GC inlet systems and sample introduction techniques have occurred, and they are included in the new edition. Other updates include a discussion on fast GC and options for combining GC detectors with mass spectrometry. The section regarding GC Conditions, Derivatization, and Mass Spectral Interpretation of Specific Compound Types has the same number of compound types as the original edition, but the information in each section has been expanded to not only explain some of the spectra but to also explain why certain fragmentations take place. The number of Appendices has been increased from 12 to 17. The Appendix on Atomic Masses and Isotope Abundances has been expanded to provide tools to aid in determination of elemental composition from isotope peak intensity ratios. An appendix with examples on "Steps to follow in the determination of elemental compositions based on isotope peak intensities" has been added. Appendices on whether to use GC/MS or LC/MS, third-party software for use in data analysis, list of information required in reporting GC/MS data, X+1 and X+2 peak relative intensities based on the number of atoms of carbon in an ion, and list of available EI mass spectral databases have been added. Others such as the ones on derivatization, isotope peak patterns for ions with Cl and/or Br, terms used in GC and in mass spectrometry, and tips on setting up, maintaining and troubleshooting a GC/MS system have all been expanded and updated. Covers the practical instruction necessary for successful operation of GC/MS equipment Reviews the latest advances in instrumentation, ionization methods, and quantitation Includes troubleshooting techniques and a variety of additional information useful for the GC/MS practitioner A true benchtop reference A guide to a basic understanding of the components of a Gas Chromatograph-Mass Spectrometer (GC-MS) Quick References to data interpretation Ready source for information on new analyses

Download or read book The Design and Application of a Microwave Excited Atmospheric Pressure Helium Plasma Spectroscopic Emission Detection System for High Resolution Gas Chromatography written by Scott Alan Estes and published by . This book was released on 1982 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Gas Chromatography written by Xinghua Guo and published by BoD – Books on Demand. This book was released on 2014-02-26 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: For decades gas chromatography has been and will remain an irreplaceable analytical technique in many research areas for both quantitative analysis and qualitative characterization/identification, which is still supplementary with HPLC. This book highlights a few areas where significant advances have been reported recently and/or a revisit of basic concepts is deserved. It provides an overview of instrumental developments, frontline and modern research as well as practical industrial applications. The topics include GC-based metabolomics in biomedical, plant and microbial research, natural products as well as characterization of aging of synthetic materials and industrial monitoring, which are contributions of several experts from different disciplines. It also contains best hand-on practices of sample preparation (derivatization) and data processing in daily research. This book is recommended to both basic and experienced researchers in gas chromatography.

Download or read book Faculties Publications and Doctoral Theses in Chemistry and Chemical Engineering at United States Universities written by American Chemical Society. Committee on Professional Training and published by . This book was released on 1991 with total page 1646 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Current Practice of Gas Chromatography Mass Spectrometry written by Wilfried M.A. Niessen and published by CRC Press. This book was released on 2001-04-04 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume details the principles and instrumentation of gas chromatography-mass spectrometry (CG-MS), and outlines industrial, environmental, pharmaceutical, clinical, toxicological, forensic and food-related applications, revealing findings from the laboratories of 40 contributing scientists around the world using GC-MS in practice. It describes upstream and downstream applications of GC-MS in the petroleum industry and identifies chlorinated compounds in the environment with quadrupole ion-trap technology and high-resolution sector instruments.

Download or read book Selected Approaches to Gas Chromatography mass Spectrometry in Laboratory Medicine written by Robert S. Melville and published by . This book was released on 1975 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gas Chromatography Mass Spectrometry written by Diane C Turner and published by Royal Society of Chemistry. This book was released on 2019-11-28 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas chromatography–mass spectrometry (GC-MS) is a powerful way to analyse a range of substances. It is used in everything from food safety to medicine. It has even been used to protect endangered vultures through analysis of poisonous pesticide molecules in their environment! I want to apply this technique, where do I begin? Is GC-MS is the right technique to use? How do I prepare my samples and calibrate the instruments? This textbook has the answers to all these questions and more. Throughout the book, case studies illustrate the practical process, the techniques used and any common challenges. Newcomers can easily search for answers to their question and find clear advice with coloured images on how to get started and all subsequent steps involved in using GC-MS as part of a research process. Readers will find information on collecting and preparing samples, designing and validating methods, analysing results, and troubleshooting. Examples of pollutant, food, oil and fragrance analysis bring the theory to life. The authors use their extensive experience teaching GC-MS theory and practice and draw on their combined backgrounds applying the technique in academic and industry settings to bring this practical reference together. The authors also design and teach the Royal Society of Chemistry’s Pan Africa Chemistry Network GC-MS course, which is supported by GSK.

Download or read book Quantitative Chromatographic Analysis written by Thomas Beesley and published by CRC Press. This book was released on 2000-12-06 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights critical factors involved in successful chromatographic analysis. Details analytical procedures; outlining sample preparation, collection, transportation, and storage. Provides step-by-step guidelines for producing analytical reports.

Download or read book Practical Aspects of Gas Chromatography Mass Spectrometry written by Gordon M. Message and published by Wiley-Interscience. This book was released on 1984-10-03 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: New York : Wiley, c1984.

Download or read book Development and Performance Enhancement of a Capillary Microwave Induced Plasma Mass Spectrometer for Gas Chromatographic Detection written by Angela Maria Zapata and published by . This book was released on 2000 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: A capillary plasma source has been adapted and improved for mass spectrometry. The microwave induced plasma/mass spectrometer (MIP/MS) was coupled with gas chromatography (GC) for the selective detection of organochlorine pesticides (Cl-probe). The MIP/MS was evaluated for plasma stability and analytical performance. Studies show that the capillary MIP, 1 mm i.d., produced an analytically stable ion source. Plasma parameters (ne = 1.56 x 1014 cm-3, Texc = 3784 K, Trot = 2724 K, Tion = 5500 K at flow rates 30 to 500 ml min-1) were consistent with results reported for larger sources (e.g., 100 W or greater power with gas flows>0.11 min-1). Analytical performance was evaluated by comparing GC/MIP/MS against GC/MS with electron impact ionization (EI). Typically, the MIP/MS produced the same or larger signals for a 16 compound pesticide standard solution. However, when more than 10% diesel:oil (2:1) was added to the standard solution significant carbon deposition occurred. Addition of scavenger gases N2 or O2 allowed up to 70% diesel:oil (2:1) mixtures to be analyzed. GC/MIP/MS and GC/EI/MS results were within 10%, with a 16 compound average precision of 15%. A significant improvement in the stability and performance was achieved by optimizing power transfer to the cavity using a tunable coaxial MIP. The linear dynamic range obtained with the tunable MIP/MS extended over three orders of magnitude and was between 0.39 and 1600 ng mul-1, a ten time improvement with respect to the standard MIP. Detection limits were between 3 and 19 pg s-1, seven times lower than the detection limits obtained with the non tunable MIP/MS. Further, analysis of highly contaminated samples was accomplished without the need of scavenger gases. When compared to GC with MIP/atomic emission detection, the tunable GC/MIP/MS was a more sensitive Cl-probe. Excellent accuracy and precision was found for the detection of the pesticides in a petroleum contaminated reference soil. Recoveries were within 10% of the certified values, with 5% measurement reproducibility.