Static Headspace-Gas Chromatography

Static Headspace-Gas Chromatography
Author: Bruno Kolb
Publisher: John Wiley & Sons
Total Pages: 384
Release: 2006-06-23
Genre: Science
ISBN: 0471914568

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The only reference to provide both current and thorough coverage of this important analytical technique Static headspace-gas chromatography (HS-GC) is an indispensable technique for analyzing volatile organic compounds, enabling the analyst to assay a variety of sample matrices while avoiding the costly and time-consuming preparation involved with traditional GC. Static Headspace-Gas Chromatography: Theory and Practice has long been the only reference to provide in-depth coverage of this method of analysis. The Second Edition has been thoroughly updated to reflect the most recent developments and practices, and also includes coverage of solid-phase microextraction (SPME) and the purge-and-trap technique. Chapters cover: * Principles of static and dynamic headspace analysis, including the evolution of HS-GC methods and regulatory methods using static HS-GC * Basic theory of headspace analysis-physicochemical relationships, sensitivity, and the principles of multiple headspace extraction * HS-GC techniques-vials, cleaning, caps, sample volume, enrichment, and cryogenic techniques * Sample handling * Cryogenic HS-GC * Method development in HS-GC * Nonequilibrium static headspace analysis * Determination of physicochemical functions such as vapor pressures, activity coefficients, and more Comprehensive and focused, Static Headspace-Gas Chromatography, Second Edition provides an excellent resource to help the reader achieve optimal chromatographic results. Practical examples with original data help readers to master determinations in a wide variety of areas, such as forensic, environmental, pharmaceutical, and industrial applications.

Static Headspace-gas Chromatography

Static Headspace-gas Chromatography
Author: Bruno Kolb
Publisher: John Wiley & Sons
Total Pages: 324
Release: 1997
Genre: Science
ISBN:

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This volume provides a description of the various techniques used for quantitative analysis, of the applications in pollution control (air, water and soil) and of the applications in food packaging and in food quality control. A brief theory of headspace sampling is also provided.

Static Headspace—Gas Chromatography

Static Headspace—Gas Chromatography
Author: Bruno Kolb
Publisher: Wiley-VCH
Total Pages: 0
Release: 1997-06-06
Genre: Science
ISBN: 9780471192381

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Static Headspace-Gas Chromatography Theory and Practice Bruno Kolb * Leslie S. Ettre Static (equilibrium) headspace-gas chromatography (static HS-GC) offers a reliable, simple, and accurate way to quantitate volatile compounds in liquid and solid matrices. The technique is being used in increasingly more analytical laboratories in a variety of industries because it enables high sample turnaround, automated high-performance GC analysis, and automated and unattended sample clean-up by gas extraction, while avoiding laborious sample preparation. Static Headspace-Gas Chromatography provides the most thorough and current treatment available on this technique. The book covers the theory of headspace sampling as related to selection of the operational parameters, describes quantitative calibration techniques, and presents, and presents detailed methods, all adapted for automation. It includes many examples of proven practical applications-complete with original data-from the most important applications of static HS-GC in environmental analysis, polymers, packaging, pharmaceuticals, and food analysis.

Headspace Analysis of Foods and Flavors

Headspace Analysis of Foods and Flavors
Author: American Chemical Society. Meeting
Publisher: Springer Science & Business Media
Total Pages: 228
Release: 2001-08-31
Genre: Science
ISBN: 0306465612

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Headspace gas analysis is an analytical technique that has been successfully applied to food flavors for over 20 years but has experienced a resurgence of interest and innovation in recent years. In its truest form, headspace analysis represents the direct collection and analysis of the mixture of vapors in the space immediately above a food or beverage. The technique offers several advantages for workers interested in how a product smells and ultimately tastes. It offers the advantages of speed, simplicity, and, more importantly, represents the aroma profile a consumer is likely to experience just before consuming the product. Since only volatile components are collected, the sample is totally free of nonvolatile residues which commonly plague comparison liquid-liquid extracts of the same product. This is the first book devoted to headspace analysis in foods and beverages in more than 20 years. The publication contains chapters on the basic theory of headspace analysis, as well as the theory and application of newly developed headspace techniques, such as solid phase micro extraction, SPME and electronic noses. New concentrating and desorption techniques are described in addition to a raft of food applications including tomato and citrus juices, alcoholic beverages, baguettes, dairy products, lipids, grill flavoring, baked potato, and meat. Chapters on off-flavors as well as aroma-food matrix interactions are also included. "This is the bible of headspace analysis. If you are involved in, or planning on becoming involved, or want to learn more about, this incredible subject , then buy this book immediately!" – Aubrey Parsons, governing council member, International Union for Food Science and Technology

Modern Practice of Gas Chromatography

Modern Practice of Gas Chromatography
Author: Robert L. Grob, PhD
Publisher: John Wiley & Sons
Total Pages: 1059
Release: 2004-08-04
Genre: Science
ISBN: 047165115X

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The bible of gas chromatography-offering everything the professional and the novice need to know about running, maintaining, and interpreting the results from GC Analytical chemists, technicians, and scientists in allied disciplines have come to regard Modern Practice of Gas Chomatography as the standard reference in gas chromatography. In addition to serving as an invaluable reference for the experienced practitioner, this bestselling work provides the beginner with a solid understanding of gas chromatographic theory and basic techniques. This new Fourth Edition incorporates the most recent developments in the field, including entirely new chapters on gas chromatography/mass spectrometry (GC/MS); optimization of separations and computer assistance; high speed or fast gas chromatography; mobile phase requirements: gas system requirements and sample preparation techniques; qualitative and quantitative analysis by GC; updated information on detectors; validation and QA/QC of chromatographic methods; and useful hints for good gas chromatography. As in previous editions, contributing authors have been chosen for their expertise and active participation in their respective areas. Modern Practice of Gas Chromatography, Fourth Edition presents a well-rounded and comprehensive overview of the current state of this important technology, providing a practical reference that will greatly appeal to both experienced chomatographers and novices.

LC/MS

LC/MS
Author: Marvin C. McMaster
Publisher: John Wiley & Sons
Total Pages: 184
Release: 2005-08-08
Genre: Science
ISBN: 0471736570

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A practical guide to using and maintaining an LC/MS system The combination of liquid chromatography (LC) and mass spectrometry(MS) has become the laboratory tool of choice for a broad range ofindustries that require the separation, analysis, and purificationof mixtures of organic compounds. LC/MS: A Practical User's Guide provides LC/MS users with aneasy-to-use, hands-on reference that focuses on the practicalapplications of LC/MS and introduces the equipment and techniquesneeded to use LC/MS successfully. Following a thorough explanationof the basic components and operation of the LC/MS system, theauthor presents empirical methods for optimizing the techniques,maintaining the instrumentation, and choosing the appropriate MS orLC/MS analyzer for any given problem. LC/MS covers everything users need to know about: The latest equipment, including quadrupole, time-of-flight, andion trap analyzers Cutting-edge processes, such as preparing HPLC mobile phasesand samples; handling and maintaining a wide variety of silica,zirconium, and polymeric separation columns; interpreting andquantifying mass spectral data; and using MS interfaces Current and future applications in the pharmaceutical andagrochemical industries, biotechnology, clinical research,environmental studies, and forensics An accompanying PowerPoint® slide-set on CD-ROM provides vitalteaching tools for instructors and new equipment operators.Abundantly illustrated and easily accessible, the text is designedto help students and practitioners acquire optimum proficiency inthis powerful and rapidly advancing analytical application.