AUTOMATED HIGH-SPEED REPETITIVE GC SYSTEMS FOR VAPOR ANALYSIS (GAS CHROMATOGRAPHY). PDF Download

Author: CHRISTINE LYNN RANKIN
Publisher:
ISBN:
Category :
Languages : en
Pages : 442

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which successive, near real-time analyses are required.

Author: Andrew James Grall
Publisher:
ISBN:
Category :
Languages : en
Pages : 312

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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 862

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Author: Gerhard Schomburg
Publisher:
ISBN:
Category : Gas chromatography
Languages : en
Pages : 342

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This practical approach to gas chromatography is a fast and effective introduction for the beginner and a guide for the professional, bringing him up-to-date with modern techniques. The beginner will appreciate the clear and concise presentation of background theory, and the professional will benefit from the depiction of the tricks and traps of the 'real world' of gas chromatography. A special chapter shows and explains in detail 40 chromatograms. Thus the book can also be used for practical courses. The author has been involved in the development of most modern GC techniques and awarded numerous prizes in Europe and the United States.

Author: Bruno Kolb
Publisher: John Wiley & Sons
ISBN: 0471914568
Category : Science
Languages : en
Pages : 384

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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.

Author: William L. Budde
Publisher:
ISBN:
Category : Gas chromatography
Languages : en
Pages : 52

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Author: Jonathan E. Kopke
Publisher:
ISBN:
Category : Chemistry, Organic
Languages : en
Pages : 192

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Author: Jonathan E. Kopke
Publisher:
ISBN:
Category : Gas chromatography
Languages : en
Pages : 52

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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A multidimensional gas chromatograph (GC) system having wide bore capillary and narrow bore capillary GC columns in series and having a novel system interface. Heart cuts from a high flow rate sample, separated by a wide bore GC column, are collected and directed to a narrow bore GC column with carrier gas injected at a lower flow compatible with a mass spectrometer. A bimodal six-way valve is connected with the wide bore GC column outlet and a bimodal four-way valve is connected with the narrow bore GC column inlet. A trapping and retaining circuit with a cold trap is connected with the six-way valve and a transfer circuit interconnects the two valves. The six-way valve is manipulated between first and second mode positions to collect analyte, and the four-way valve is manipulated between third and fourth mode positions to allow carrier gas to sweep analyte from a deactivated cold trap, through the transfer circuit, and then to the narrow bore GC capillary column for separation and subsequent analysis by a mass spectrometer. Rotary valves have substantially the same bore width as their associated columns to minimize flow irregularities and resulting sample peak deterioration. The rotary valves are heated separately from the GC columns to avoid temperature lag and resulting sample deterioration.

Author: Matthew S. Klee
Publisher: Hewlett-Packard, Avondale Division
ISBN: 9781880313008
Category : Gas chromatography
Languages : en
Pages : 132

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