Supercritical Fluid Extraction of PCBs in Tandem with High Resolution Gas Chromatography in Environmental Analysis PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Book Description
A simple method was developed for the direct coupling of supercritical fluid extractions (SFE) with a high resolution gas chromatograph equipped with an electron capture detector. SFE conditions were investigated for polychlorinated biphenyls from sediments in terms of mobile phase, entrainer, pressure, temperature and mass-flow optimization. The dynamic and static extractions were compared. Determination of PCBs was tested on certified sediment from the National Water Research Institute.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Book Description
A simple method was developed for the direct coupling of supercritical fluid extractions (SFE) with a high resolution gas chromatograph equipped with an electron capture detector. SFE conditions were investigated for polychlorinated biphenyls from sediments in terms of mobile phase, entrainer, pressure, temperature and mass-flow optimization. The dynamic and static extractions were compared. Determination of PCBs was tested on certified sediment from the National Water Research Institute.
Author: F. I. Onuska
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
A simple method was developed for the direct coupling of supercritical fluid extractions (SFE) with a high resolution gas chromatograph equipped with an electron capture detector. SFE conditions were investigated for polychlorinated biphenyls from sediments in terms of mobile phase, entrainer, pressure, temperature and mass-flow optimization. The dynamic and static extractions were compared. Determination of PCBs was tested on certified sediment from the National Water Research Institute.
Author: Mitchell D. Erickson
Publisher: Routledge
ISBN: 1351466550
Category : Science
Languages : en
Pages : 688
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Book Description
This updated and expanded Second Edition of Dr. Erickson's Analytical Chemistry of PCBs appears a decade after the first and is completely revised and updated. The changes from the First Edition reflect the significant growth in the area and a growing appreciation of the importance of PCB analysis to our culture. This book is a comprehensive review of the analytical chemistry of PCBs. It is part history, part annotated bibliography, part comparison, and part guidance. Featuring a new chapter on analyst/customer interactions and several new appendices, the Second Edition is an invaluable resource for both chemists with no experience in PCB analysis and seasoned PCB researchers. All topics have been more thoroughly treated and updated in this new edition to reflect advances made in the last decade, especially:
Author: Alena Mudroch
Publisher: Routledge
ISBN: 1351433814
Category : Science
Languages : en
Pages : 322
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Book Description
Because water is one of the most important life-supporting media on the planet, the quality of aquatic ecosystems is of great interest to the entire world population. One of the factors that greatly affects water quality is the condition of the underlying sediment layer. The Manual of Physico-Chemical Analysis of Aquatic Sediments addresses the best methods for quantitative determination of chemical forms of different elements and compounds, bioassessment techniques, and determination of physical properties of sediments. Essential information for surveying, research, and monitoring of sediment contamination is covered. This manual will aid sediment biologists, geochemists, limnologists, regulatory program managers, environmental chemists and toxicologists and environmental consultants in preparing plans for proper remedial action.
Author: E.D. Ramsey
Publisher: Springer Science & Business Media
ISBN: 9401149488
Category : Science
Languages : en
Pages : 449
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Book Description
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.
Author: Mitchell D. Erickson
Publisher: Routledge
ISBN: 1351466542
Category : Science
Languages : en
Pages : 688
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Book Description
This updated and expanded Second Edition of Dr. Erickson's Analytical Chemistry of PCBs appears a decade after the first and is completely revised and updated. The changes from the First Edition reflect the significant growth in the area and a growing appreciation of the importance of PCB analysis to our culture. This book is a comprehensive review of the analytical chemistry of PCBs. It is part history, part annotated bibliography, part comparison, and part guidance. Featuring a new chapter on analyst/customer interactions and several new appendices, the Second Edition is an invaluable resource for both chemists with no experience in PCB analysis and seasoned PCB researchers. All topics have been more thoroughly treated and updated in this new edition to reflect advances made in the last decade, especially:
Author: J.R. Dean
Publisher: Springer Science & Business Media
ISBN: 940112146X
Category : Science
Languages : en
Pages : 238
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Book Description
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.
Author: Bob W. Wright
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 84
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Book Description
Author: Jennifer Maria Wing
Publisher:
ISBN:
Category :
Languages : en
Pages : 362
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Book Description
Author: Leo M.L. Nollet
Publisher: CRC Press
ISBN: 1439889643
Category : Science
Languages : en
Pages : 999
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Book Description
Extensively revised and updated, Handbook of Water Analysis, Third Edition provides current analytical techniques for detecting various compounds in water samples. Maintaining the detailed and accessible style of the previous editions, this third edition demonstrates water sampling and preservation methods by enumerating different ways to measure chemical and radiological characteristics. It gives step-by-step descriptions of separation, residue determination, and clean-up techniques. See What’s New in the Second Edition: Includes five new chapters covering ammonia, nitrates, nitrites, and petroleum hydrocarbons, as well as organoleptical and algal analysis methodology Compares older methods still frequently used with recently developed protocols, and examines future trends Features a new section regarding organoleptical analysis of water acknowledging that ultimately the consumers of drinking water have the final vote over its quality with respect to odor, flavor, and color The book covers the physical, chemical, and other relevant properties of various substances found in water. It then describes the sampling, cleanup, extraction, and derivatization procedures, and concludes with detection methods. Illustrated with procedure flow charts and schematics, the text includes numerous tables categorizing methods according to type of component, origin of the water sample, parameters and procedures used, and application range. With contributions from international experts, the book guides you through the entire scientific investigation starting with a sampling strategy designed to capture the real-world situation as closely as possible, and ending with an adequate chemometrical and statistical treatment of the acquired data. By organizing data into more than 300 tables, graphs, and charts, and supplementing the text with equations and illustrations, the editors distill a wealth of knowledge into a single accessible reference.
