Analysis With Supercritical Fluids

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Analysis with Supercritical Fluids: Extraction and Chromatography

Author : Bernd Wenclawiak
Publisher : Springer Science & Business Media
ISBN 13 : 3642774741
Total Pages : 225 pages
Book Rating : 4.6/5 (427 download)

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Book Synopsis Analysis with Supercritical Fluids: Extraction and Chromatography by : Bernd Wenclawiak

Download or read book Analysis with Supercritical Fluids: Extraction and Chromatography written by Bernd Wenclawiak and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of supercritical fluids in analytical chemistry is still grow ing. More and more analysts are discovering the favorable advan tages for a number of applications. Especially supercritical fluid extraction (SFE) has attracted a lot of interest in recent years due to its simplicity. Supercritical fluid chromatography (SFC) has become better established and the development of this technique has been accelerated by the many applications with capillary col umns which have been published in the literature. At first SFC equipment was based on instruments commonly used for liquid chromatography, and the first commercial in struments were derived from this technology. However, capillary columns can be much more easily interfaced to gas chromatogra phy equipment especially to the detectors commonly used for Oc. Many stationary phases both for packed micro columns and capillary columns have been designed for SFC purposes extending this technology to LC and OC. The most common fluid applied in SFC and SFE is carbon dioxide. The advantages of supercritical CO , such as having dif 2 fusivity like a gas and solvating power depending on temperature and pressure, are also valid for other fluids and modified fluids. Both properties are valuable for sample extraction and extraction selectivity.

Applications of Supercritical Fluids in Industrial Analysis

Author : J.R. Dean
Publisher : Springer Science & Business Media
ISBN 13 : 940112146X
Total Pages : 238 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Applications of Supercritical Fluids in Industrial Analysis by : J.R. Dean

Download or read book Applications of Supercritical Fluids in Industrial Analysis written by J.R. Dean and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continued search for rapid, efficient and cost-effective means of analytical measurement has introduced supercritical fluids into the field of analytical chemistry. Two areas are common: supercritical fluid chroma tography and supercritical fluid extraction. Both seek to exploit the unique properties of a gas at temperatures and pressures above the critical point. The most common supercritical fluid is carbon dioxide, employed because of its low critical temperature (31 °C), inertness, purity, non-toxicity and cheapness. Alternative supercritical fluids are also used and often in conjunction with modifiers. The combined gas-like mass transfer and liquid-like solvating characteristics have been used for improved chroma tographic separation and faster sample preparation. Supercritical fluid chromatography (SFC) is complementary to gas chro matography ( GC) and high performance liquid chromatography (HPLC), providing higher efficiency than HPLC, together with the ability to analyse thermally labile and high molecular weight analytes. Both packed and open tubular columns can be employed, providing the capability to analyse a wide range of sample types. In addition, flame ionization detection can be used, thus providing 'universal' detection.

Analysis with Supercritical Fluids

Author : Bernd Wenclawiak
Publisher :
ISBN 13 : 9783642774751
Total Pages : 232 pages
Book Rating : 4.7/5 (747 download)

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Book Synopsis Analysis with Supercritical Fluids by : Bernd Wenclawiak

Download or read book Analysis with Supercritical Fluids written by Bernd Wenclawiak and published by . This book was released on 1992-11-03 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The editor has brought together in a compact and readable form the new methods of analytical chemistry using supercritical fluids. The volume provides comprehensive treatment of supercritical fluid chromatography (SFC) and supercritical fluid extraction (SFE); it discusses both theory and practice. The contributions are written by leading experts in their fields with exhaustive practical experience in SFC and SFE. Special attention is given to the description of applications and thus provides the experienced analyst with invaluable information widely scattered in the literature and helps the novice to adopt these new techniques quickly in his laboratory. An addendum includes brand new literature on SFC and SFE.

Supercritical Fluid Cleaning

Author : Samuel P. Sawan
Publisher : Elsevier
ISBN 13 : 0815519168
Total Pages : 307 pages
Book Rating : 4.8/5 (155 download)

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Book Synopsis Supercritical Fluid Cleaning by : Samuel P. Sawan

Download or read book Supercritical Fluid Cleaning written by Samuel P. Sawan and published by Elsevier. This book was released on 1998-12-31 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although supercritial fluid (SCF) technology is now widely used in extraction and purification processes (in the petrochemical, food and pharmaceuticals industries), this book is the first to address the new application of cleaning. The objective is to provide a roadmap for readers who want to know whether SCF technology can meet their own processing and cleaning needs. It is particularly helpful to those striving to balance the requirements for a clean product and a clean environment. The interdisciplinary subject matter will appeal to scientists and engineers in all specialties ranging from materials and polymer sciences to chemistry and physics. It is also useful to those developing new processes for other applications, and references given at the end of each chapter provide links to the wider body of SCF literature. The book is organized with topics progressing from the fundamental nature of the supercritical state, through process conditions and materials interactions, to economic considerations. Practical examples are included to show how the technology has been successfully applied. The first four chapters consider principles governing SCF processing, detailing issues such as solubility, design for cleanability, and the dynamics of particle removal. The next three chapters discuss surfactants and microemulsions, SCF interaction with polymers, and the use of supercritical carbon dioxide (CO2) as a cleaning solvent. The closing chapters focus on more practical considerations such as scaleup, equipment costs, and financial analysis.

Supercritical Fluids

Author : E. Kiran
Publisher : Springer Science & Business Media
ISBN 13 : 9401139296
Total Pages : 602 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Supercritical Fluids by : E. Kiran

Download or read book Supercritical Fluids written by E. Kiran and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercritical fluids are neither gas nor liquid, but can be compressed gradually from low to high density and they are therefore interesting and important as tunable solvents and reaction media in the chemical process industry. By adjusting the density the properties of these fluids can be customised and manipulated for a given process - physical or chemical transformation. Separation and processing using supercritical solvents such as CO2 are currently on-line commercially in the food, essential oils and polymer industries. Many agencies and industries are considering the use of supercritical water for waste remediation. Supercritical fluid chromatography represents another, major analytical application. Significant advances have recently been made in materials processing, ranging from particle formation to the creation of porous materials. The chapters in this book provide tutorial accounts of topical areas centred around: (1) phase equilibria, thermodynamics and equations of state; (2) critical behaviour, crossover effects; (3) transport and interfacial properties; (4) molecular modelling, computer simulation; (5) reactions, spectroscopy; (6) phase separation kinetics; (7) extractions; (8) applications to polymers, pharmaceuticals, natural materials and chromatography; (9) process scale-up.

Analytical Supercritical Fluid Extraction

Author : Maria D. Luque de Castro
Publisher : Springer Science & Business Media
ISBN 13 : 3642786731
Total Pages : 332 pages
Book Rating : 4.6/5 (427 download)

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Book Synopsis Analytical Supercritical Fluid Extraction by : Maria D. Luque de Castro

Download or read book Analytical Supercritical Fluid Extraction written by Maria D. Luque de Castro and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in analytical chemistry have turned it into a virtually unrecognizable science compared to a few decades ago, when it lagged behind other sciences and techniques. However, advances in analytical science have been far from universal: while innovations in instrumentation and data acquisition and processing systems have reached unprecedented levels thanks to parallel breakthroughs in computer science and chemo metrics, progress in preliminary operations has been much slower despite their importance to analytical results. Thus, such clear trends in analytical process development as automation and miniaturization have not reached preliminary operations to the same extent, even though this area is pro bably in the greatest need. Improvement in preliminary operations is thus an urgent goal of analytical chemistry on the verge of the twenty first century. Increased R&D endeavours and manufacture of commercially available automatic equipment for implementation of the wide variety of operations that separate the uncollected, unmeasured, untreated sample from the signal measuring step are thus crucial on account of the wide variability of such operations, which precludes development of all-purpose equipment, and the complexity of some, particularly relating to solid samples. Supercritical fluid extraction opens up interesting prospects in this context and is no doubt an effective approach to automatioI1 and mini aturization in the preliminary steps of the analytical process. The dramatic developments achieved in its short life are atypical in many respects.

Supercritical Fluid Technology in Oil and Lipid Chemistry

Author : Jerry W. King
Publisher : The American Oil Chemists Society
ISBN 13 : 9780935315714
Total Pages : 456 pages
Book Rating : 4.3/5 (157 download)

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Book Synopsis Supercritical Fluid Technology in Oil and Lipid Chemistry by : Jerry W. King

Download or read book Supercritical Fluid Technology in Oil and Lipid Chemistry written by Jerry W. King and published by The American Oil Chemists Society. This book was released on 1996 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermodynamics of supercritical fluids with respect to lipid-containing systems; Solubility measurement of lipid constituents in supercritical fluids; Supercritical fluid extraction of oilseeds/lipids in natural products; Supercritical fractionation of lipids; Oilseed solubility and extraction modeling; Modeling of the supercritical fluid extraction rate of oilseeds; Design and economic analysis of supercritical fluid extraction processes; Supercritical fluid extraction and fractionation of fish oils; Supercritical fluid extraction of egg lipids; Supercritical fluid extraction of Cocoa and Cocoa products; Superctitical CO2 extraction of meat products and edible animal fats for cholesterol reduction; Supercritical fluid extraction of algae; Effect of supercritical fluids on residual meals and protein functionality; Treatment of food materials with supercritical carbon dioxide; Enzymatic synthesis in supercritical fluids; Basic principles and the role of supercritical fluid chromatography in lipid analysis; Supercritical fluid chromatography for the analysis of oleochemicals; Supercritical fluid chromatography of trace components in oils and fats; Analytical supercritical fluid extraction for oil and lipid analysis.

Modern Supercritical Fluid Chromatography

Author : Larry M. Miller
Publisher : John Wiley & Sons
ISBN 13 : 1118948394
Total Pages : 416 pages
Book Rating : 4.1/5 (189 download)

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Book Synopsis Modern Supercritical Fluid Chromatography by : Larry M. Miller

Download or read book Modern Supercritical Fluid Chromatography written by Larry M. Miller and published by John Wiley & Sons. This book was released on 2019-12-12 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explains why modern supercritical fluid chromatography (SFC) is the leading "green" analytical and purification separations technology. Modern supercritical fluid chromatography (SFC) is the leading method used to analyze and purify chiral and achiral chemical compounds, many of which are pharmaceuticals, pharmaceutical candidates, and natural products including cannabis-related compounds. This book covers current SFC instrumentation as it relates to greater robustness, better reproducibility, and increased analytical sensitivity. Modern Supercritical Fluid Chromatography: Carbon Dioxide Containing Mobile Phases covers the history, instrumentation, method development and applications of SFC. The authors provided readers with an overview of analytical and preparative SFC equipment, stationary phases, and mobile phase choices. Topics covered include: Milestones of Supercritical Fluid Chromatography; Physical Properties of Supercritical Fluids; Instrumentation for SFC; Detection in SFC; Achiral SFC Method Development; Chiral SFC Method Development; and Preparative Scale SFC. The book also includes highlights of modern applications of SFC in the final chapters—namely pharmaceuticals, consumer products, foods, polymers, petroleum-related mixtures, and cannabis—and discusses the future of SFC. Provides a clear explanation of the physical and chemical properties of supercritical fluids, which gives the reader a better understanding of the basis for improved performance in SFC compared to HPLC and GC Describes the advantages of SFC as a green alternative to HPLC and GC for the analysis of both polar, water-soluble, and non-polar analytes Details both achiral and chiral SFC method development, including modifiers, additives, the impact of temperature and pressure, and stationary phase choices Details why SFC is the premier modern preparative chromatographic technique used to purify components of mixtures for subsequent uses, both from performance and economic perspectives Covers numerous detectors, with an emphasis on SFC-MS, SFC-UV, and SFC-ELSD (evaporative light scattering detection) Describes the application of SFC to numerous high-value application areas Modern Supercritical Fluid Chromatography: Carbon Dioxide Containing Mobile Phases will be of great interest to professionals, students, and professors involved in analytical, bioanalytical, separations science, medicinal, petroleum, and environmental chemistries. It will also appeal to pharmaceutical scientists, natural-product scientists, food and consumer-products scientists, chemical engineers, and managers in these areas.

Applications of Supercritical Fluids in Industrial Analysis

Author : John R. Dean
Publisher :
ISBN 13 : 9780849371080
Total Pages : 224 pages
Book Rating : 4.3/5 (71 download)

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Book Synopsis Applications of Supercritical Fluids in Industrial Analysis by : John R. Dean

Download or read book Applications of Supercritical Fluids in Industrial Analysis written by John R. Dean and published by . This book was released on 1993 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Analytical Techniques in the Oil and Gas Industry for Environmental Monitoring

Author : Melissa N. Dunkle
Publisher : John Wiley & Sons
ISBN 13 : 1119523303
Total Pages : 464 pages
Book Rating : 4.1/5 (195 download)

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Book Synopsis Analytical Techniques in the Oil and Gas Industry for Environmental Monitoring by : Melissa N. Dunkle

Download or read book Analytical Techniques in the Oil and Gas Industry for Environmental Monitoring written by Melissa N. Dunkle and published by John Wiley & Sons. This book was released on 2020-09-01 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thorough introduction to environmental monitoring in the oil and gas industry Analytical Techniques in the Oil and Gas Industry for Environmental Monitoring examines the analytical side of the oil and gas industry as it also provides an overall introduction to the industry. You’ll discover how oil and natural gas are sourced, refined, and processed. You can learn about what’s produced from oil and natural gas, and why evaluating these sourced resources is important. The book discusses the conventional analyses for oil and natural gas feeds, along with their limitations. It offers detailed descriptions of advanced analytical techniques that are commercially available, plus explanations of gas and oil industry equipment and instrumentation. You’ll find technique descriptions supplemented with a list of references as well as with real-life application examples. With this book as a reference, you can prepare to apply specific analytical methods in your organization’s lab environment. Analytical Techniques can also serve as your comprehensive resource on key techniques in the characterization of oil and gas samples, within both refinery and environmental contexts. Understand of the scope of oil and gas industry techniques available Consider the benefits and limitations of each available process Prepare for applying analytical techniques in your lab See real examples and a list of references for each technique Read descriptions of off-line analytics, as well as on-line and process applications As a chemist, engineer, instructor, or student, this book will also expand your awareness of the role these techniques have in environmental monitoring and environmental impact assessments.

The Application of Green Solvents in Separation Processes

Author : Francisco Pena-Pereira
Publisher : Elsevier
ISBN 13 : 0128054433
Total Pages : 560 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis The Application of Green Solvents in Separation Processes by : Francisco Pena-Pereira

Download or read book The Application of Green Solvents in Separation Processes written by Francisco Pena-Pereira and published by Elsevier. This book was released on 2017-02-28 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Application of Green Solvents in Separation Processes features a logical progression of a wide range of topics and methods, beginning with an overview of green solvents, covering everything from water and organic solvents, to ionic liquids, switchable solvents, eutectic mixtures, supercritical fluids, gas-expanded solvents, and more. In addition, the book outlines green extraction techniques, such as green membrane extraction, ultrasound-assisted extraction, and surfactant-mediated extraction techniques. Green sampling and sample preparation techniques are then explored, followed by green analytical separations, including green gas and liquid capillary chromatography, counter current chromatography, supercritical fluid chromatography, capillary electrophoresis, and other electrical separations. Applications of green chemistry techniques that are relevant for a broad range of scientific and technological areas are covered, including the benefits and challenges associated with their application. Provides insights into recent advances in greener extraction and separation processes Gives an understanding of alternatives to harmful solvents commonly used in extraction and separation processes, as well as advanced techniques for such processes Written by a multidisciplinary group of internationally recognized scientists

Supercritical Fluid Chromatography for the Analysis of Nitroaromatics, Nitramines and Nitrate Esters

Author : Paul H. Miyares
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Supercritical Fluid Chromatography for the Analysis of Nitroaromatics, Nitramines and Nitrate Esters by : Paul H. Miyares

Download or read book Supercritical Fluid Chromatography for the Analysis of Nitroaromatics, Nitramines and Nitrate Esters written by Paul H. Miyares and published by . This book was released on 1992 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Modern Supercritical Fluid Chromatography

Author : Larry M. Miller
Publisher : John Wiley & Sons
ISBN 13 : 1119626005
Total Pages : 442 pages
Book Rating : 4.1/5 (196 download)

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Book Synopsis Modern Supercritical Fluid Chromatography by : Larry M. Miller

Download or read book Modern Supercritical Fluid Chromatography written by Larry M. Miller and published by John Wiley & Sons. This book was released on 2019-11-06 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explains why modern supercritical fluid chromatography (SFC) is the leading "green" analytical and purification separations technology. Modern supercritical fluid chromatography (SFC) is the leading method used to analyze and purify chiral and achiral chemical compounds, many of which are pharmaceuticals, pharmaceutical candidates, and natural products including cannabis-related compounds. This book covers current SFC instrumentation as it relates to greater robustness, better reproducibility, and increased analytical sensitivity. Modern Supercritical Fluid Chromatography: Carbon Dioxide Containing Mobile Phases covers the history, instrumentation, method development and applications of SFC. The authors provided readers with an overview of analytical and preparative SFC equipment, stationary phases, and mobile phase choices. Topics covered include: Milestones of Supercritical Fluid Chromatography; Physical Properties of Supercritical Fluids; Instrumentation for SFC; Detection in SFC; Achiral SFC Method Development; Chiral SFC Method Development; and Preparative Scale SFC. The book also includes highlights of modern applications of SFC in the final chapters—namely pharmaceuticals, consumer products, foods, polymers, petroleum-related mixtures, and cannabis—and discusses the future of SFC. Provides a clear explanation of the physical and chemical properties of supercritical fluids, which gives the reader a better understanding of the basis for improved performance in SFC compared to HPLC and GC Describes the advantages of SFC as a green alternative to HPLC and GC for the analysis of both polar, water-soluble, and non-polar analytes Details both achiral and chiral SFC method development, including modifiers, additives, the impact of temperature and pressure, and stationary phase choices Details why SFC is the premier modern preparative chromatographic technique used to purify components of mixtures for subsequent uses, both from performance and economic perspectives Covers numerous detectors, with an emphasis on SFC-MS, SFC-UV, and SFC-ELSD (evaporative light scattering detection) Describes the application of SFC to numerous high-value application areas Modern Supercritical Fluid Chromatography: Carbon Dioxide Containing Mobile Phases will be of great interest to professionals, students, and professors involved in analytical, bioanalytical, separations science, medicinal, petroleum, and environmental chemistries. It will also appeal to pharmaceutical scientists, natural-product scientists, food and consumer-products scientists, chemical engineers, and managers in these areas.

Supercritical Fluid Chromatography

Author : Colin F. Poole
Publisher : Elsevier
ISBN 13 : 0128093676
Total Pages : 572 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Supercritical Fluid Chromatography by : Colin F. Poole

Download or read book Supercritical Fluid Chromatography written by Colin F. Poole and published by Elsevier. This book was released on 2017-02-16 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercritical fluid chromatography (SFC) is a rapidly developing laboratory technique for the separation and identification of compounds in mixtures. Significant improvements in instrumentation have rekindled interest in SFC in recent years and enhanced its standing in the scientific community. Many scientists are familiar with column liquid chromatography and its strengths and weaknesses, but the possibilities brought to the table by SFC are less well-known and are underappreciated. Supercritical Fluid Chromatography is a thorough and encompassing reference that defines the concept of contemporary practice in SFC and how it should be implemented in laboratory science. Given the changes that have taken place in SFC, this book presents contemporary aspects and applications of the technique and introduces SFC as a natural solution in the larger field of separation science. The focus on state-of-the-art instrumental SFC distinguishes this work as the go-to reference work for those interested in implementing the technique at an advanced level. Edited and authored by world-leading chromatography experts Provides comprehensive coverage of SFC in a single source Extensive referencing facilitates identification of key research developments More than 200 figures and tables aid in the retention of key concepts

Supercritical Fluid Chromatography

Author : Gérard Rossé
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110619067
Total Pages : 264 pages
Book Rating : 4.1/5 (16 download)

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Book Synopsis Supercritical Fluid Chromatography by : Gérard Rossé

Download or read book Supercritical Fluid Chromatography written by Gérard Rossé and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supercritical Fluid Chromatography (SFC) provides a timely overview of SFC application areas which were unimaginable just a decade ago. This two-volume series opens with an overview of the history and expectant future of SFC and continues with recent applications in the pharmaceutical industry and other fascinating areas of science. SFC has found its place in the pharmaceutical industry with an increasing body of applications for chiral and achiral molecules in both the research and development phases of the drug discovery process. As illustrated in this two-volume series, the current interest in SFC extends well beyond the pharmaceutical industry. Chapters encompassing applications for polar and non-polar mixtures of importance are covering widely disparate areas in substance abuse, natural products including cannabinoids, bioactive lipids, flavor and fragrance. With its broad balance and coverage, this two-volume book constitutes a unique educational platform to students and scientists for many years to come. The major objective of this book editions is to inspire and stimulate readers to continue exploring the possibilities of exploiting supercritical fluids as a particular media for analysis, purifications and synthesis

Supercritical Fluids

Author : Y. Arai
Publisher : Springer Science & Business Media
ISBN 13 : 3642562388
Total Pages : 463 pages
Book Rating : 4.6/5 (425 download)

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Book Synopsis Supercritical Fluids by : Y. Arai

Download or read book Supercritical Fluids written by Y. Arai and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: The potential of supercritical fluid methods is presented in a comprehensive way. On the basis of a careful discussion of physical and chemical principles, the application of this method in process technology is demonstrated.

Analytical Supercritical Fluid Extraction Techniques

Author : E.D. Ramsey
Publisher : Springer Science & Business Media
ISBN 13 : 9401149488
Total Pages : 449 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Analytical Supercritical Fluid Extraction Techniques by : E.D. Ramsey

Download or read book Analytical Supercritical Fluid Extraction Techniques written by E.D. Ramsey and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past decade supercritical fluid extration (SFE) has attracted considerable attention as a sample preparation procedure in analytical chemistry. The successful implementation of this technique can lead to improved sample throughput, more efficient recovery of analytes, cleaner extracts, economic replacement of halogenated solvents and a high level of automation, compared to conventional sample preparation procedures. This book provides an overview of basic principles of SFE as well as in-depth reviews of both on- and off-line SFE methods. The on-line coupling of SFE with both chromatographic and spectroscopics techniques has been the subject of a great deal of research effort and is dealt with in detail. Newer developments, such as off-line SFE of solid and liquid matrices, are starting to attract a great deal of interest, and the coverage of these areas will prove of particular value to the analytical chemist. The international team of authors has illustrated these topics with many `state-of-the-art' applications, and each chapter provides a comprehensive list of references. For the convenience of the reader, an appendix which contains pressure conversion scales and supercritical fluid carbon dioxide density tables appears at the end of the book. The volume's extensive coverage of both on-line and off-line extraction will be particularly useful to analytical chemists, in a wide range of environments, seeking to develop high quality, simple and robust SFE methods.