Characterization of the Low and Moderate Power Helium Microwave-induced Plasma as an Atomic Emision Detector for Supercritical Fluid Chromatography PDF Download
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Author: Gregory K. Webster
Publisher:
ISBN:
Category : Atomic emission spectroscopy
Languages : en
Pages : 388
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Author: Gregory K. Webster
Publisher:
ISBN:
Category : Atomic emission spectroscopy
Languages : en
Pages : 388
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Book Description
Author: Leonard J. Galante
Publisher:
ISBN:
Category :
Languages : en
Pages : 42
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Book Description
A microwave induced plasma (MIP) sustained in helium is evaluated as an element selective detector for capillary supercritical fluid chromatography (SFC). The plasma source, a surface microwave induced plasma (surfatron), is described. Optimal plasma conditions including viewing position, helium flow rate, and applied microwave power are discussed for sulfur emission in the near-infrared spectral region. In addition, the effects of two common mobile phases (CO2 and N2O) on plasma stability, sensitivity, and spectral background from 200 nm to 1100 nm are assessed. Although the plasma was evaluated principally for use with SFC, much of the discussion is relevant to its application as a gas chromatographic detector. Keywords: Supercritical fluid chromatography; Nonmetal detection; Spectroscopic detector; Speciation; Sulfur detection. (jd/rh).
Author: Bernd Wenclawiak
Publisher: Springer Science & Business Media
ISBN: 3642774741
Category : Science
Languages : en
Pages : 225
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Book Description
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.
Author: Akbar Montaser
Publisher: John Wiley & Sons
ISBN: 0471188115
Category : Science
Languages : en
Pages : 1044
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Book Description
The broadest source of information on analytical ICP spectrometry available in a coherent, single volume. Renowned contributors define theory, diagnostics, models, instrumentation and applications. They also discuss atomic emission, atomic fluorescence and mass spectrometries based on ICP sources for atomization, excitation and ionization. 'This book is HIGHLY RECOMMENDED.' Analytical Chemistry '... a handy reference for anyone attempting to understand the theory of ICPs and how they work. The detailed discussions of the various types of instrumentation and methods will be quite helpful to students and researchers in the field who want to broaden their understanding of analytical atomic spectroscopy.' Applied Spectroscopy '...Everyone involved in elemental analysis using ICP should have this book. It is useful for both experienced and novice ICP spectroscopists.' Spectroscopy
Author: Carlos M. Ferreira
Publisher: Springer Science & Business Media
ISBN: 1489911308
Category : Science
Languages : en
Pages : 556
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Book Description
Proceedings of a NATO ARW held in Vimeiro, Portugal, May 11-15, 1992
Author: Larry Donell Perkins
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 246
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Author:
Publisher:
ISBN:
Category : Microwave plasmas
Languages : en
Pages : 128
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Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 768
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Author: Yubang Wang
Publisher:
ISBN:
Category : Chromatographic analysis
Languages : en
Pages : 134
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Author: Joe N. Emily
Publisher:
ISBN:
Category : Atomic emission spectroscopy
Languages : en
Pages : 252
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Book Description
