Download or read book The Concentration of High Boiling Impurities from Low Boiling Compounds by Reverese Flow Gas Chromatography written by Amos S. Newton and published by . This book was released on 1971 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The characteristics of gas chromatography peaks arising from various compounds when the column flow is reversed has been studied. It is shown that all compounds are eluted after reversal of the flow with the peak maximum at a time equal to or less than the time of flow reversal. The half width of the reverse peak is determined by a constant related to the number of plates in the column, and the square root of twice the time of flow reversal multiplied by the square root of the time of emergence of the compound when run in the forward direction. The method appears applicable to the concentration of trace high boiling impurities in any matrix in which the bulk components can be rapidly eluted through a suitable column.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 1256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Pollution Abstracts written by and published by . This book was released on 1972 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book GC Inlets written by Matthew S. Klee and published by Hewlett-Packard, Avondale Division. This book was released on 1990-02-01 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Mass Spectroscopy Literature for 1972 Compiled by a Computer Method written by and published by . This book was released on 1975 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers the year 1972, and lists approximately 10,000 articles of interest to mass spectroscopists. This two-volume report consists of three sections. Vol. II contains the Key Word Out of Context Index (KWOC Index) section. The KWOC Index lists the key words, the reference numbers of the articles in which the key word appears, and the first 100 characters of the title.
Download or read book Practical Gas Chromatography written by Katja Dettmer-Wilde and published by Springer. This book was released on 2014-11-05 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas chromatography continues to be one of the most widely used analytical techniques, since its applications today expand into fields such as biomarker research or metabolomics. This new practical textbook enables the reader to make full use of gas chromatography. Essential fundamentals and their implications for the practical work at the instrument are provided, as well as details on the instrumentation such as inlet systems, columns and detectors. Specialized techniques from all aspects of GC are introduced ranging from sample preparation, solvent-free injection techniques, and pyrolysis GC, to separation including fast GC and comprehensive GCxGC and finally detection, such as GC-MS and element-specific detection. Various fields of application such as enantiomer, food, flavor and fragrance analysis, physicochemical measurements, forensic toxicology, and clinical analysis are discussed as well as cutting-edge application in metabolomics is covered.
Download or read book Gas Chromatography written by Peter Kusch and published by BoD – Books on Demand. This book was released on 2019-09-04 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas chromatography (GC) is one of the most important types of chromatography used in analytical chemistry for separating and analyzing chemical organic compounds. Today, gas chromatography is one of the most widespread investigation methods of instrumental analysis. This technique is used in the laboratories of chemical, petrochemical, and pharmaceutical industries, in research institutes, and also in clinical, environmental, and food and beverage analysis. This book is the outcome of contributions by experts in the field of gas chromatography and includes a short history of gas chromatography, an overview of derivatization methods and sample preparation techniques, a comprehensive study on pyrazole mass spectrometric fragmentation, and a GC/MS/MS method for the determination and quantification of pesticide residues in grape samples.
Download or read book Handbook of GC MS written by Hans-Joachim Hubschmann and published by John Wiley & Sons. This book was released on 2015-07-27 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only comprehensive reference on this popular and rapidly developing technique provides a detailed overview, ranging from fundamentals to applications, including a section on the evaluation of GC-MS analyses. As such, it covers all aspects, including the theory and principles, as well as a broad range of real-life examples taken from laboratories in environmental, food, pharmaceutical and clinical analysis. It also features a glossary of approximately 300 terms and a substance index that facilitates finding a specific application. The first two editions were very well received, making this handbook a must-have in all analytical laboratories using GC-MS.
Download or read book Purification of Laboratory Chemicals written by W.L.F. Armarego and published by Elsevier. This book was released on 2003-03-07 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its fifth edition, the book has been updated to include more detailed descriptions of new or more commonly used techniques since the last edition as well as remove those that are no longer used, procedures which have been developed recently, ionization constants (pKa values) and also more detail about the trivial names of compounds.In addition to having two general chapters on purification procedures, this book provides details of the physical properties and purification procedures, taken from literature, of a very extensive number of organic, inorganic and biochemical compounds which are commercially available. This is the only complete source that covers the purification of laboratory chemicals that are commercially available in this manner and format. * Complete update of this valuable, well-known reference* Provides purification procedures of commercially available chemicals and biochemicals* Includes an extremely useful compilation of ionisation constants
Download or read book Static Headspace Gas Chromatography written by Bruno Kolb and published by John Wiley & Sons. This book was released on 2006-06-23 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only reference to provide both current and thorough coverage of this important analytical technique Static headspace-gas chromatography (HS-GC) is an indispensable technique for analyzing volatile organic compounds, enabling the analyst to assay a variety of sample matrices while avoiding the costly and time-consuming preparation involved with traditional GC. Static Headspace-Gas Chromatography: Theory and Practice has long been the only reference to provide in-depth coverage of this method of analysis. The Second Edition has been thoroughly updated to reflect the most recent developments and practices, and also includes coverage of solid-phase microextraction (SPME) and the purge-and-trap technique. Chapters cover: * Principles of static and dynamic headspace analysis, including the evolution of HS-GC methods and regulatory methods using static HS-GC * Basic theory of headspace analysis-physicochemical relationships, sensitivity, and the principles of multiple headspace extraction * HS-GC techniques-vials, cleaning, caps, sample volume, enrichment, and cryogenic techniques * Sample handling * Cryogenic HS-GC * Method development in HS-GC * Nonequilibrium static headspace analysis * Determination of physicochemical functions such as vapor pressures, activity coefficients, and more Comprehensive and focused, Static Headspace-Gas Chromatography, Second Edition provides an excellent resource to help the reader achieve optimal chromatographic results. Practical examples with original data help readers to master determinations in a wide variety of areas, such as forensic, environmental, pharmaceutical, and industrial applications.
Download or read book Government Reports Announcements written by and published by . This book was released on 1972-04 with total page 1542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Biotechnology written by and published by Elsevier. This book was released on 2019-07-17 with total page 4876 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Biotechnology, Third Edition, Six Volume Set unifies, in a single source, a huge amount of information in this growing field. The book covers scientific fundamentals, along with engineering considerations and applications in industry, agriculture, medicine, the environment and socio-economics, including the related government regulatory overviews. This new edition builds on the solid basis provided by previous editions, incorporating all recent advances in the field since the second edition was published in 2011. Offers researchers a one-stop shop for information on the subject of biotechnology Provides in-depth treatment of relevant topics from recognized authorities, including the contributions of a Nobel laureate Presents the perspective of researchers in different fields, such as biochemistry, agriculture, engineering, biomedicine and environmental science
Download or read book American Perfumer written by and published by . This book was released on 1962 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modern Practice of Gas Chromatography written by Robert L. Grob, PhD and published by John Wiley & Sons. This book was released on 2004-08-04 with total page 1059 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bible of gas chromatography-offering everything the professional and the novice need to know about running, maintaining, and interpreting the results from GC Analytical chemists, technicians, and scientists in allied disciplines have come to regard Modern Practice of Gas Chomatography as the standard reference in gas chromatography. In addition to serving as an invaluable reference for the experienced practitioner, this bestselling work provides the beginner with a solid understanding of gas chromatographic theory and basic techniques. This new Fourth Edition incorporates the most recent developments in the field, including entirely new chapters on gas chromatography/mass spectrometry (GC/MS); optimization of separations and computer assistance; high speed or fast gas chromatography; mobile phase requirements: gas system requirements and sample preparation techniques; qualitative and quantitative analysis by GC; updated information on detectors; validation and QA/QC of chromatographic methods; and useful hints for good gas chromatography. As in previous editions, contributing authors have been chosen for their expertise and active participation in their respective areas. Modern Practice of Gas Chromatography, Fourth Edition presents a well-rounded and comprehensive overview of the current state of this important technology, providing a practical reference that will greatly appeal to both experienced chomatographers and novices.
Download or read book American Perfumer and Cosmetics written by and published by . This book was released on 1962 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chromatographic Detectors written by Raymond P.W. Scott and published by CRC Press. This book was released on 1996-07-17 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Comprehensively covers the design, construction, and operation of gas chromatography, liquid chromatography, and thin-layer chromatography detectors--all in one convenient, up-to-date source. Emphasizes the essential use of common specifications to describe all detectors, allowing easy comparison of their attributes."
Download or read book Government Reports Index written by and published by . This book was released on 1972 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
