Quantitative EPR

Quantitative EPR PDF

Author: Gareth R. Eaton

Publisher: Springer Science & Business Media

Published: 2010-04-10

Total Pages: 192

ISBN-13: 3211929487

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There is a growing need in both industrial and academic research to obtain accurate quantitative results from continuous wave (CW) electron paramagnetic resonance (EPR) experiments. This book describes various sample-related, instrument-related and software-related aspects of obtaining quantitative results from EPR expe- ments. Some speci?c items to be discussed include: selection of a reference standard, resonator considerations (Q, B ,B ), power saturation, sample position- 1 m ing, and ?nally, the blending of all the factors together to provide a calculation model for obtaining an accurate spin concentration of a sample. This book might, at ?rst glance, appear to be a step back from some of the more advanced pulsed methods discussed in recent EPR texts, but actually quantitative “routine CW EPR” is a challenging technique, and requires a thorough understa- ing of the spectrometer and the spin system. Quantitation of CW EPR can be subdivided into two main categories: (1) intensity and (2) magnetic ?eld/mic- wave frequency measurement. Intensity is important for spin counting. Both re- tive intensity quantitation of EPR samples and their absolute spin concentration of samples are often of interest. This information is important for kinetics, mechanism elucidation, and commercial applications where EPR serves as a detection system for free radicals produced in an industrial process. It is also important for the study of magnetic properties. Magnetic ?eld/microwave frequency is important for g and nuclear hyper?ne coupling measurements that re?ect the electronic structure of the radicals or metal ions.

Analytical Instrumentation Handbook

Analytical Instrumentation Handbook PDF

Author: Jack Cazes

Publisher: CRC Press

Published: 2004-11-30

Total Pages: 1066

ISBN-13: 0849390397

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Compiled by the editor of Dekker's distinguished Chromatographic Science series, this reader-friendly reference is as a unique and stand-alone guide for anyone requiring clear instruction on the most frequently utilized analytical instrumentation techniques. More than just a catalog of commercially available instruments, the chapters are wri

Foundations of Modern EPR

Foundations of Modern EPR PDF

Author: Gareth R. Eaton

Publisher: World Scientific

Published: 1998

Total Pages: 836

ISBN-13: 9789810232955

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Since its inception 50 years ago, electron paramagnetic resonance (EPR, also called ESR or EMR) has become a major tool in diverse fields ranging from biology and chemistry to solid state physics and materials science. This important book includes personal descriptions of early experiments by pioneers who laid the foundations for the field, perspectives on the state of the art, and glimpses of future opportunities. It presents a broad view of the foundations of EPR and its applications, and will therefore appeal to scientists in many fields. Even the expert will find here history not previously recorded and provocative views of future directions.

Electron Paramagnetic Resonance

Electron Paramagnetic Resonance PDF

Author: Marina Brustolon

Publisher: John Wiley & Sons

Published: 2009-02-25

Total Pages: 568

ISBN-13: 0470432225

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This book offers a pragmatic guide to navigating through the complex maze of EPR/ESR spectroscopy fundamentals, techniques, and applications. Written for the scientist who is new to EPR spectroscopy, the editors have prepared a volume that de-mystifies the basic fundamentals without weighting readers down with detailed physics and mathematics, and then presents clear approaches in specific application areas. The first part presents basic fundamentals and advantages of electron paramagnetic resonance spectrscopy. The second part explores severalapplication areas including chemistry, biology, medicine, materials and geology. A frequently-asked-questions sections focuses on practicalquestions, such as the size of sample, etc. It's an ideal, hands-on reference for chemists and researchers in the pharmaceutical and materials (semiconductor) industries who are looking for a basic introduction to EPR spectroscopy.

Analytical Instrumentation Handbook, Second Edition

Analytical Instrumentation Handbook, Second Edition PDF

Author: Galen Wood Ewing

Publisher: CRC Press

Published: 1997-08-29

Total Pages: 1476

ISBN-13: 9780824794552

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Intended for both the novice and professional, this text aims to approach problems with currently available tools and methods in the modern analytical chemistry domain. It covers all fields from basic theory and principles of analytical chemistry to instrumentation classification, design and purchasing. This edition includes information on X-ray methods and analysis, capillary electrophoresis, infrared and Raman technique comparisons, and more.

Iron-Sulfur Clusters in Chemistry and Biology

Iron-Sulfur Clusters in Chemistry and Biology PDF

Author: Tracey Rouault

Publisher: Walter de Gruyter GmbH & Co KG

Published: 2014-08-20

Total Pages: 672

ISBN-13: 3110308428

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This volume on iron-sulfur proteins includes chapters that describe the initial discovery of iron-sulfur proteins in the 1960s to elucidation of the roles of iron sulfur clusters as prosthetic groups of enzymes, such as the citric acid cycle enzyme, aconitase, and numerous other proteins, ranging from nitrogenase to DNA repair proteins. The capacity of iron sulfur clusters to accept and delocalize single electrons is explained by basic chemical principles, which illustrate why iron sulfur proteins are uniquely suitable for electron transport and other activities. Techniques used for detection and stabilization of iron-sulfur clusters, including EPR and Mossbauer spectroscopies, are discussed because they are important for characterizing unrecognized and elusive iron sulfur proteins. Recent insights into how nitrogenase works have arisen from multiple advances, described here, including studies of high-resolution crystal structures. Numerous chapters discuss how microbes, plants, and animals synthesize these complex prosthetic groups, and why it is important to understand the chemistry and biogenesis of iron sulfur proteins. In addition to their vital importance in mitochondrial respiration, numerous iron sulfur proteins are important in maintenance of DNA integrity. Multiple rare human diseases with different clinical presentations are caused by mutations of genes in the iron sulfur cluster biogenesis pathway. Understanding iron sulfur proteins is important for understanding a rapidly expanding group of metabolic pathways important in all kingdoms of life, and for understanding processes ranging from nitrogen fixation to human disease.

Electron Spin Resonance in Food Science

Electron Spin Resonance in Food Science PDF

Author: Ashutosh Kumar Shukla

Publisher: Academic Press

Published: 2016-12-23

Total Pages: 156

ISBN-13: 0128133643

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Electron Spin Resonance in Food Science covers, in detail, the ESR identification of the irradiation history of food products and beverages to investigate changes that occur during storage, with an aim of improving hygienic quality and extending shelf-life with minimal tempering in nutritional profile. The book also includes ESR studies on the interaction of food items and packaging materials, along with a section on new approaches in ESR identification of irradiated foods that is followed by a chapter on international legislation relevant to irradiated food. A section on ESR applications in characterizing ROS/antioxidants in food items and lipid oxidation, including spin labeling, spin trapping and imaging applications is also covered, as are ESR applications in nutrition and pharmaceutics. Serves as a complete reference on the application of ESR spectroscopy in food science research Focuses on applications and data interpretation, avoiding extensive use of mathematics so that it fulfils the need of young scientists from different disciplines Includes informative pages from leading manufacturers, highlighting the features of recent ESR spectrometers used in food science research Includes information on different, active, worldwide groups in ESR characterization of food items and beverages

Ewing's Analytical Instrumentation Handbook, Fourth Edition

Ewing's Analytical Instrumentation Handbook, Fourth Edition PDF

Author: Nelu Grinberg

Publisher: CRC Press

Published: 2019-02-21

Total Pages: 1614

ISBN-13: 1351644319

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This handbook is a guide for workers in analytical chemistry who need a starting place for information about a specific instrumental technique. It gives a basic introduction to the techniques and provides leading references on the theory and methodology for an instrumental technique. This edition thoroughly expands and updates the chapters to include concepts, applications, and key references from recent literature. It also contains a new chapter on process analytical technology.

Electron Paramagnetic Resonance

Electron Paramagnetic Resonance PDF

Author: Bruce C. Gilbert

Publisher: Royal Society of Chemistry

Published: 2008

Total Pages: 232

ISBN-13: 085404373X

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Electron Paramagnetic Resonance (EPR) highlights major developments in this area, with results being set into the context of earlier work and presented as a set of critical yet coherent overviews. The topics covered describe contrasting types of application, ranging from biological areas such as EPR studies of free-radical reactions in biology and medically-related systems, to experimental developments and applications involving EPR imaging, the use of very high fields, and time-resolved methods. Critical and up-to-the-minute reviews of advances involving the design of spin-traps, advances in spin-labelling, paramagnetic centres on solid surfaces, exchange-coupled oligomers, metalloproteins and radicals in flavoenzymes are also included. As EPR continues to find new applications in virtually all areas of modern science, including physics, chemistry, biology and materials science, this series caters not only for experts in the field, but also those wishing to gain a general overview of EPR applications in a given area.

Electron Paramagnetic Resonance Investigations of Biological Systems by Using Spin Labels, Spin Probes, and Intrinsic Metal Ions

Electron Paramagnetic Resonance Investigations of Biological Systems by Using Spin Labels, Spin Probes, and Intrinsic Metal Ions PDF

Author:

Publisher: Academic Press

Published: 2015-10-05

Total Pages: 702

ISBN-13: 0128028467

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Electron Paramagnetic Resonance Investigations of Biological Systems by Using Spin Labels, Spin Probes, and Intrinsic Metal Ions Part A & B, are the latest volumes in the Methods in Enzymology series, continuing the legacy of this premier serial with quality chapters authored by leaders in the field. This volume covers research methods centered on the use of Electron Paramagnetic Resonance (EPR) techniques to study biological structure and function. Timely contribution that describes a rapidly changing field Leading researchers in the field Broad coverage: Instrumentation, basic theory, data analysis, and applications