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Author: Jonathan V. Sweedler Publisher: ISBN: Category : Languages : en Pages : 4
Book Description
Recent advances in the capabilities of state-of-the-art array detectors have the potential to greatly improve analytical spectroscopy. The operational characteristics of several charge transfer device (CTD) detectors investigated in our laboratories show them to be highly suitable for application in UV-Vis molecular spectroscopy. The electro-optical characteristics of these devices including dynamic range, quantum efficiency, noise, resistance to blooming and lag are contrasted to photodiode arrays, vidicons, and photomultiplier tubes. With peak quantum efficiencies of 80%, read noises over two orders of magnitude lower than photodiode array detectors, and virtually no dark current, several of these CTD detectors are extremely well suited for luminescence spectroscopy. The performance of several spectroscopic systems which effectively use the various device geometries is presented. A linear concave grating spectrograph employing a 30-watt deuterium source and a CTD detector capable of extremely sensitive fluorescence measurements is described. Multichannel detectors, Molecular spectroscopy, Fluorescence detection, Luminescence detection, Charge transfer devices. (MJM).
Author: Jonathan V. Sweedler Publisher: ISBN: Category : Languages : en Pages : 4
Book Description
Recent advances in the capabilities of state-of-the-art array detectors have the potential to greatly improve analytical spectroscopy. The operational characteristics of several charge transfer device (CTD) detectors investigated in our laboratories show them to be highly suitable for application in UV-Vis molecular spectroscopy. The electro-optical characteristics of these devices including dynamic range, quantum efficiency, noise, resistance to blooming and lag are contrasted to photodiode arrays, vidicons, and photomultiplier tubes. With peak quantum efficiencies of 80%, read noises over two orders of magnitude lower than photodiode array detectors, and virtually no dark current, several of these CTD detectors are extremely well suited for luminescence spectroscopy. The performance of several spectroscopic systems which effectively use the various device geometries is presented. A linear concave grating spectrograph employing a 30-watt deuterium source and a CTD detector capable of extremely sensitive fluorescence measurements is described. Multichannel detectors, Molecular spectroscopy, Fluorescence detection, Luminescence detection, Charge transfer devices. (MJM).
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages : 1460
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Patrick M. Epperson Publisher: ISBN: Category : Languages : en Pages : 23
Book Description
A novel fluorescence spectrometer is described using a two-dimensional charge-coupled device as the detector and a mercury pen lamp as the excitation source. The fluorescence spectra and intensity of anthracene in ethanol standards at concentrations ranging from .0001 to 10 to the -11th power M are shown. The limit of detection measured is 10 to the -12th power M, or 227 parts-per-quadrillion. The linear dynamic range obtained with this instrument is 6 orders of magnitude with excellent linearity using 10 second signal integration time. Keywords: Charge coupled device; Molecular fluorescence; Multichannel detectors; Charge transfer device; Anthracene; Rayleigh spectra; Raman spectra.
Author: James W. Robinson Publisher: CRC Press ISBN: 1315301148 Category : Science Languages : en Pages : 920
Book Description
Analytical chemistry today is almost entirely instrumental analytical chemistry and it is performed by many scientists and engineers who are not chemists. Analytical instrumentation is crucial to research in molecular biology, medicine, geology, food science, materials science, and many other fields. With the growing sophistication of laboratory equipment, there is a danger that analytical instruments can be regarded as "black boxes" by those using them. The well-known phrase "garbage in, garbage out" holds true for analytical instrumentation as well as computers. This book serves to provide users of analytical instrumentation with an understanding of their instruments. This book is written to teach undergraduate students and those working in chemical fields outside analytical chemistry how contemporary analytical instrumentation works, as well as its uses and limitations. Mathematics is kept to a minimum. No background in calculus, physics, or physical chemistry is required. The major fields of modern instrumentation are covered, including applications of each type of instrumental technique. Each chapter includes: A discussion of the fundamental principles underlying each technique Detailed descriptions of the instrumentation. An extensive and up to date bibliography End of chapter problems Suggested experiments appropriate to the technique where relevant This text uniquely combines instrumental analysis with organic spectral interpretation (IR, NMR, and MS). It provides detailed coverage of sampling, sample handling, sample storage, and sample preparation. In addition, the authors have included many instrument manufacturers’ websites, which contain extensive resources.
Author: James W. Robinson Publisher: CRC Press ISBN: 0849306507 Category : Science Languages : en Pages : 1107
Book Description
Completely rewritten, revised, and updated, this Sixth Edition reflects the latest technologies and applications in spectroscopy, mass spectrometry, and chromatography. It illustrates practices and methods specific to each major chemical analytical technique while showcasing innovations and trends currently impacting the field. Many of the chapters have been individually reviewed by teaching professors and include descriptions of the fundamental principles underlying each technique, demonstrations of the instrumentation, and new problem sets and suggested experiments appropriate to the topic. About the authors... JAMES W. ROBINSON is Professor Emeritus of Chemistry, Louisiana State University, Baton Rouge. A Fellow of the Royal Chemical Society, he is the author of over 200 professional papers and book chapters and several books including Atomic Absorption Spectroscopy and Atomic Spectroscopy. He was Executive Editor of Spectroscopy Letters and the Journal of Environmental Science and Health (both titles, Marcel Dekker, Inc.) and the Handbook of Spectroscopy and the Practical Handbook of Spectroscopy (both titles, CRC Press). He received the B.Sc. (1949), Ph.D. (1952), and D.Sc. (1978) degrees from the University of Birmingham, England. EILEEN M. SKELLY FRAME recently was Clinical Assistant Professor and Visiting Research Professor, Rensselaer Polytechnic Institute, Troy, New York. Dr. Skelly Frame has extensive practical experience in the use of instrumental analysis to characterize a wide variety of substances, from biological samples and cosmetics to high temperature superconductors, polymers, metals, and alloys. Her industrial career includes supervisory roles at GE Corporate Research and Development, Stauffer Chemical Corporate R&D, and the Research Triangle Institute. She is a member of the American Chemical Society, the Society for Applied Spectroscopy, and the American Society for Testing and Materials. Dr. Skelly Frame received the B.S. degree in chemistry from Drexel University, Philadelphia, Pennsylvania, and the Ph.D. in analytical chemistry from Louisiana State University, Baton Rouge. GEORGE M. FRAME II is Scientific Director, Chemical Biomonitoring Section of the Wadsworth Laboratory, New York State Department of Health, Albany. He has a wide range of experience in the field and has worked at the GE Corporate R&D Center, Pfizer Central Research, the U.S. Coast Guard R&D Center, the Maine Medical Center, and the USAF Biomedical Sciences Corps. He is an American Chemical Society member. Dr. Frame received the B.A. degree in chemistry from Harvard College, Cambridge, Massachusetts, and the Ph.D. degree in analytical chemistry from Rutgers University, New Brunswick, New Jersey.
Author: Mark Stauffer Publisher: BoD – Books on Demand ISBN: 9535126806 Category : Science Languages : en Pages : 442
Book Description
The goal of this book is to present an overview of applications of molecular spectroscopy to investigations in organic and inorganic materials, foodstuffs, biosamples and biomedicine, and novel characterization and quantitation methods. This text is a compilation of selected research articles and reviews covering current efforts in various applications of molecular spectroscopy. Sections 1 and 2 deal, respectively, with spectroscopic studies of inorganic and organic materials. Section 3 provides applications of molecular spectroscopy to biosamples and biomedicine. Section 4 explores spectroscopic characterization and quantitation of foods and beverages. Lastly, Section 5 presents research on novel spectroscopic methodologies. Overall, this book should be a great source of scientific information for anyone involved in characterization, quantitation, and method development.
Author: V.P. Gupta Publisher: Elsevier ISBN: 0323914705 Category : Science Languages : en Pages : 692
Book Description
Molecular and Laser Spectroscopy, Advances and Applications: Volume 3 gives students and researchers an up-to-date understanding of the fast-developing area of molecular and laser spectroscopy. This book covers basic principles and advances in several conventional as well as new and upcoming areas of molecular and laser spectroscopy. This third volume is an extension of the two previous volumes of the same title and includes all-new topics. Each chapter is devoted to a particular fast-growing area of research and fills the gap between elementary texts and advanced material found in research articles. Some of the topics covered include: terahertz spectroscopy and its applications in health care· linear and non-linear vibrational optical activity spectroscopy; cascade laser IR-spectroscopy and frequency comb techniques; step-scan infrared spectroscopy (absorption and emission) for detecting reaction intermediates· surface-enhanced (SERS) and tip-enhanced (TERS) Raman scattering; infrared and Raman micro-spectroscopy; time-resolved linear and non-linear infrared spectroscopy using pico-second and femtosecond lasers. The spectroscopic techniques have been applied to medical sciences, forensics, security, material science, agriculture, food, chemical, pharmaceutical and petrochemical industries and used to study molecular vibrational dynamics, and hydrogen bonding in ground and excited states. This book serves as a valuable resource for students, teachers, and beginning researchers engaged in the area of molecular and laser spectroscopy. On account of the wide range of applications, researchers and scientific personnel in many industries will find this book useful for learning about the latest techniques and putting them to practical use. Written by eminent research scientists having an intricate knowledge of the latest activities in the field Includes exhaustive lists of research articles, reviews, and books at the end of each chapter to aid in further pursuit of research activity Uses illustrative examples of the varied applications to provide a practical guide to those interested in using molecular and laser spectroscopy tools in their research Each chapter is written in simple, clear language and develops its topic systematically, from basics to the latest developments and future projections
Author: Jonathan V. Sweedler
Author: Jonathan V. Sweedler
Author: Jonathan V. Sweedler
Author: 
Author: Jonathan V. Sweedler
Author: Sweedler
Author: Patrick M. Epperson
Author: James W. Robinson
Author: James W. Robinson
Author: Mark Stauffer
Author: V.P. Gupta