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Books > Science & Mathematics > Chemistry > Analytical chemistry
The contributions in this volume were first presented at a symposium organized by the editors and held at the 214th National Meeting of the American Chemical Society in Las Vegas in September, 1997. The symposium was sponsored by the ACS Division of Agricultural and Food Chemistry and covered recent developments of interest in food analysis. Many changes have occurred since the standard textbooks on food analysis were published: E. coli 0 157: H7 has leaped into prominence, requiring new and rapid methods of detection; MALDI-MS was developed and used in food analysis for the first time; elec tron microscopy, fluorescence spectroscopy, and electrorheology have been applied to cheese, bread, meat, and chocolate, new methods for monitoring and predicting shelf life have been introduced; new techniques for determining the composition of food have evolved. This book includes many emerging approaches which food scientists may find useful and probably will not find in a textbook. The editors thank the authors whose work is presented in these chapters, the Divi sion of Agricultural and Food Chemistry for agreeing to hold the symposium, and our edi tors at Kluwer Academic I Plenum Publishers whose assistance made our task easier. Michael H. Tunick Samuel A. Palumbo Pina M. Fratamico v CONTENTS Physical Properties I. Transmission Electron Microscopic Imaging of Casein Submicelle Distribution in Mozzarella Cheese . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Michael H. Tunick, Peter H. Cooke, Edyth L. Malin, Philip W. Smith, and V. H. Holsinger 9 2. Confocal Microscopy of Bread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ."
The thesis by Merce Pacios exploits properties of carbon nanotubes to design novel nanodevices. The prominent electrochemical properties of carbon nanotubes are used to design diverse electrode configurations. In combination with the chemical properties and (bio)functionalization versatility, these materials prove to be very appropriate for the development of electrochemical biosensors. Furthermore, this work also evaluates the semiconductor character of carbon nanotubes (CNT) for sensor technology by using a field effect transistor configuration (FET). The CNT-FET device has been optimized for operating in liquid environments. These electrochemical and electronic CNT devices are highly promising for biomolecule sensing and for the monitoring of biological processes, which can in the future lead to applications for rapid and simple diagnostics in fields such as biotechnology, clinical and environmental research.
Process analytical chemistry (PAC) can be defined as the technology of obtaining quantitative and qualitative information about a chemical process in order to control or optimise its performance. This highly practical book provides an up-to-date introduction to the field with a special emphasis placed on industrial processes. Edited by representatives from one of the world's leading chemical companies and centres of excellence for research into the subject, the book is written by a transatlantic team of authors who provide a global perspective.
This book highlights key technologies and identifies areas for further development in proteogenomics. The utility and usefulness of very large Omics data sets (Next Gen Sequencing of DNA, RNA-seq, ribosome profiling, mass spectrometry- and antibody-based proteomics) is discussed and opportunities and challenges of related bioinformatics applications are outlined. The reader will be able to appreciate the interdisciplinary nature of the continuously evolving area of proteogenomics, which has already grown beyond its original concept of verifying gene annotations by proteomics. The chapters presented in this book are arranged to offer a general overview, rather than to provide detailed descriptions of technologies. The selected applications will provide useful insight into the level of detail that can be obtained in relation to certain diseases areas, including cancer biology and personalized medicine. The readers will find that each chapter delivers a comprehensive approach to proteogenomics, each from the point of view of a specific application. Research scientists interested in innovative processes that can offer a unique and at the same time a more complete access to technological developments and concepts that in turn can contribute to a better understand biological functions should read this book.
This will be a must-have work for scientists and practitioners in any field related to modern chemical research. It will also be highly useful for many workers in industry who are required to keep up-to-date with the latest news in chemistry and applied chemistry. So much is covered here in critical review, from the present position of developing research to future trends, that this book will still be an indispensable text ten years from now.
Capillary Electrophoresis (CE) is a powerful analytical technique
used to separate compounds and is increasingly being used in
routine analytical laboratories. Analysis and Detection by
Capillary Electrophoresis presents developments enabling the
enhancement of the detection sensitivity in CE, including the
different strategies used to achieve sensitivity requirements. It
describes techniques allowing sample preconcentration and sensitive
continuous detection systems and looks at recent developments such
as chiral analysis in CE and electrochemical detection in
microchips. UV-Vis absorbance detection, as the most widely used
detection system in CE, is also presented. Analysis and Detection
by Capillary Electrophoresis delves into the practical approaches
used in the field and will greatly benefit analytical chemists, as
well as students, teachers, technical analysts, scientists and
researchers involved in capillary electrophoresis.
While it is not possible to predict - or necessarily prevent - terrorist incidents in which chemical warfare agents (CWAs) and toxic industrial chemicals (TICs) are deployed, correctly chosen, fast, and reliable detection equipment will allow prepared rescue workers to respond quickly and minimize potential casualties. Detection Technologies for Chemical Warfare Agents and Toxic Vapors discusses the principles, instrumentation, and context for applying technologies such as ion mobility spectrometry, infrared spectroscopy, colorimetric chemistry, and flame ionization to the detection of TICs and lethal CWAs. It conveys techniques - some of which have been patented by the authors - developed for generating vapors and closely imitating potential environmental effects in a laboratory setting, specifically for the testing and evaluation of hand-held, portable, and remote devices. This book also provides a comprehensive list of toxic industrial chemicals classified in terms of hazardousness and their physical, chemical, and toxicological properties. Following a brief historical overview, the text also includes a review of federal detection requirements and the government's rationale for preparedness and response. By providing insight on the behavior of toxic chemicals, the authors hope to minimize the fear and chaotic effect in a potential event involving chemical agents. Well written and accessible to technical and non-technical audiences, no other book focuses on analytical methods and explains current detection devices for chemical warfare agents.
Tutorials on Mossbauer Spectroscopy
The 2007 Spring Meeting of the Arbeitskreis Festk rperphysik was held in Regensburg, Germany, March 2007, in conjunction with the Deutsche Physikalische Gesellschaft. It was one of the largest physics meetings in Europe. The present volume 47 of the Advances in Solid State Physics contains written versions of a large number of the invited talks and gives an overview of the present status of solid state physics where low-dimensional systems are dominating.
This reference examines innovations in separation science for
improved sensitivity and cost-efficiency, increased speed, higher
sample throughput and lower solvent consumption in the assessment,
evaluation, and validation of emerging drug compounds. It
investigates breakthroughs in sample pretreatment, HPLC, mass
spectrometry, capillary electrophoresis and therapeutic drug
monitoring for improved productivity, precision, and safety in
clinical chemistry, biomedical analysis, and forensic
research.
A survey of recent research in the fields of condensed matter physics and chemistry based on novel NMR and ESR techniques. Applications include quantum computing, metal nanoparticles, low dimensional magnets, fullerenes as atomic cages, superconductors, porous media, and laser assisted studies. The book is dedicated to Professor Robert Blinc, on the occasion of his seventieth birthday, in appreciation of his remarkable scientific accomplishments in the NMR of condensed matter.
Electron Paramagnetic Resonance (EPR) spectroscopy - also sometimes termed Electron Spin Resonance spectroscopy - has manifold potential uses in biochemistry and medicine. The paramount importance of EPR spectroscopy applied to biological tissues and fluids is that it identifies the changes in redox processes that contribute to disease. EPR spectroscopy has come a long way from its original use to detect malignant tumors. For example, the development and later refinement of methods of low-temperature registration of biological tissues widened the scope of EPR spectroscopy. Innovations made possible by the introduction of spin labels, probes, and traps made EPR spectroscopy ever more applicable to biochemistry and medicine, to the point where in vivo studies are being carefully considered. This comprehensive book discusses spectra of many tissues and bodily fluids, and the quantitative nature of paramagnetic centers in both normal individuals and patients suffering from a variety of diseases. Special attention is given to the EPR examination of bio-molecules, such as enzymes, polypeptides, vitamins, lipids, hydrocarbons, etc., which play an essential role in human activity. This book will be of great interest to physicians specializing in many different areas. Similarly, biologists, biochemists, biophysicists, and chemists will find this book very useful. It has also been written so that it may be used as a textbook at graduate level.
This book primarily focuses on the radiation effects and compact model of silicon-germanium (SiGe) heterojunction bipolar transistors (HBTs). It introduces the small-signal equivalent circuit of SiGe HBTs including the distributed effects, and proposes a novel direct analytical extraction technique based on non-linear rational function fitting. It also presents the total dose effects irradiated by gamma rays and heavy ions, as well as the single-event transient induced by pulse laser microbeams. It offers readers essential information on the irradiation effects technique and the SiGe HBTs model using that technique.
More than 40 renowned authorities carefully introduce and update chapters on the theory, fundamentals, techniques, and instrumentation of thin-layer chromatography (TLC) and high-performance thin-layer chromatography (HPTLC), highlighting the latest procedures and applications of TLC to 19 important compound classes. It is one of the only books available with coverage of TLC applications by compound type. Facilitating industrial adaptation through easy reference, the second edition supports practical research strategies with extensive tables of data, offers numerous figures that illustrate techniques and chromatograms, and includes a glossary as well as a directory of equipment suppliers.
Provides an engaging account of how genetic abnormalities, neurobiology and neuropsychology work in concert to manifest cognitive-behavioral dysfunction. The authors have woven the various molecular genetic, genomic, neurophysiological and neurobehavioral threads together into a cohesive fabric of human genes, brain, and behavior. The first section provides and introduction to neurobehavioral disorders and their phenotypes in order to investigate the pathway between genes and behavior. The second section covers autosomal disorders that produce neurobehavioral dysfunction including neurofibromatosis, Prader-Willi syndrome, and tuberous sclerosis among others. The final section considers X-linked disorders in which syndromal and nonsyndromal forms of XLMR are present. It includes the first comprehensive account of the genotype and phenotype in FRAXE, the other fragile X mutation.
"Updates fundamentals and applications of all modes of x-ray spectrometry, including total reflection and polarized beam x-ray fluorescence analysis, and synchrotron radiation induced x-ray emission. Promotes the accurate measurement of samples while reducing the scattered background in the x-ray spectrum."
This handbook is unique in its comprehensive coverage of the subject and focus on practical applications in diverse fields. It includes methods for sample preparation, the role of certified reference materials, calibration methods and statistical evaluation of the results. Problems concerning inorganic and bioinorganic speciation analysis, as well as special aspects such as trace analysis of noble metals, radionuclides and volatile organic compounds are also discussed. A significant part of the content presents applications of methods and procedures in medicine (metabolomics and therapeutic drug monitoring); pharmacy (the analysis of contaminants in drugs); studies of environmental samples; food samples and forensic analytics - essential examples that will also facilitate problem solving in related areas.
Recent years have seen an explosion in the volume of work carried out using supersonic jets of molecules following the discovery that the technique could provide information on structure and dynamics of a very high quality otherwise impossible to obtain. Written and edited by a first class team of authors, acknowledged world leaders in their subjects, this book describes applications in detail along with analysis of data recorded and background theory. Physical chemists and chemical physicists will find this unique book an essential concentrated source of information and reference.
This thesis focuses on understanding the growth and formation mechanism of supermassive black holes (SMBHs), an issue it addresses by investigating the dense interstellar medium that is assumed to be a crucial component of the fuel for SMBHs. The thesis also offers unique guidance on using the Atacama Large Millimeter/submillimeter Array (ALMA) in active galactic nuclei (AGN) research. The author presents the three major findings regarding SMBH formation and growth: (1) The development of a new diagnostic method for the energy sources in galaxies based on submillimeter spectroscopy, which allows identification of accreting SMBHs even in obscured environments, (2) the discovery that the circumnuclear dense gas disk (CND), with a typical size of a few tens of parsecs, which plays a crucial role in governing the growth of SMBHs, and (3) the discovery that the mass transfer budget from the CND to the central SMBHs can be quantitatively understood with a theoretical model incorporating the circumnuclear starburst as a driver of mass transfer. The thesis skillfully reviews these three findings, which have greatly improved our understanding of the growth mechanism of SMBHs.
Molecular Logic Gates and Luminescent Sensors Based on Photoinduced Electron Transfer, by A. Prasanna de Silva and S. Uchiyama; Luminescent Chemical Sensing, Biosensing, and Screening Using Upconverting Nanoparticles, by D. E. Achatz, R. Ali, and O. S. Wolfbeis; Luminescence Amplification Strategies Integrated with Microparticle and Nanoparticle Platforms, by S. Zhu, T. Fischer, W. Wan, A. B. Descalzo, and K. Rurack; Luminescent Chemosensors Based on Silica Nanoparticles, by S. Bonacchi, D. Genovese, R. Juris, M. Montalti, L. Prodi, E. Rampazzo, M. Sgarzi, and N. Zaccheroni; Fluorescence Based Sensor Arrays, by R. Paolesse, D. Monti, F. Dini, and C. Di Natale; Enantioselective Sensing by Luminescence, by A. Accetta, R. Corradini, and R. Marchelli
This book explores the possibility of using micro/nanostructures formed on the doped ice surface as a novel separation platform. In addition, it provides comprehensive information on the nature of freeze-concentrated solutions (FCSs) and the ice/FCS interface, which play important roles in the natural environment and industrial processes alike. The book proposes a novel size-selective separation approach using channels formed on the doped ice surface. The separation is based on the physical interaction of analytes with channel walls, which is controlled by varying the channel width through temperature and dopant concentration changes. It also shows the precise control of the channel width to be in a range of 200 nm-4 m and demonstrates the size-selective separation of microspheres, cells, and DNA. The physicochemical properties of FCSs are measured to reveal the nature of the ice/FCS interface, and the zeta potentials of ice are measured by determining EOF rates in a microchannel fabricated in the ice. The deprotonation at OH dangling bonds and adsorption of ions are also discussed. The viscosities of FCSs confined in micro/nanospaces are evaluated by means of two spectroscopic methods. When an FCS is confined in small spaces surrounded by ice, the viscosity increases compared to that in a bulk solution. Interestingly, this viscosity enhancement occurs even though its size is on the micrometer scale. These parameters are essential to discussing the unique phenomena occurring in FCSs. This book provides an explanation of the scientific processes taking place in FCSs, and reveals the potential that frozen solutions hold as innovative micro/nanofluidic devices and reaction platforms.
This thesis presents new methods for the characterization of vegetable oils, with focus in olive oil, according to geographical and botanical origin, genetic variety and other issues influencing product quality. A wide variety of analytical techniques have been employed, such as various chromatographic techniques (different gas and liquid chromatography methods), an electronic nose, infrared spectroscopy and expert-panel evaluation. Several families of minor compounds, with interest as adulteration markers, have been used for method development, including tocopherols, sterols, phenolics, alcohols, proteins and others. Most methods have been enhanced by the application of multivariate chemometrics. The proposed analytical techniques are of interest to investigate fraudulent actions and practices which are detrimental to product quality.
Infrared and Raman Spectroscopy of Biological Materials facilitates a comprehensive and through understanding of the latest developments in vibrational spectroscopy. It contains explains key breakthroughs in the methodologies and techniques for infrared, near-infrared, and Raman spectroscopy. Topics include qualitative and quantitative analysis, biomedical applications, vibrational studies of enzymatic catalysis, and chemometrics.
The last few years have seen an unprecedented drive toward the
application of proteomics to resolving challenging biomedical and
biochemical tasks. Separation techniques combined with modern mass
spectrometry are playing a central role in this drive. This book
discusses the increasingly important role of mass spectrometry in
proteomic research, and emphasizes recent advances in the existing
technology and describes the advantages and pitfalls as well.
This book reviews a variety of methods in computational chemistry and their applications in different fields of current research. Ab initio methods and regression analyses are discussed with special focus on their application to investigate chemical structures as for example dyes or drug compounds. Further topics are the use of computational methods in the modeling of spectroscopic data or to study reaction mechanisms. |
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