Elemental Analysis of Organics and Organometallic Capillary Gas Chromatographic Eluates Using the Microwave Induced Plasma and the Inductively Coupled Argon Plasma as Excitation Sources for Detection PDF Download
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Author: P. D. Goulden
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: P. D. Goulden
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: R. J. Daley
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 68
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Author: Peter C. Uden
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 368
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Book Description
The first book to specifically cover interfaced chromatographic separations and element-specific detection by AES. Offers fundamental research studies and reviews by the most active groups in the field, including those involved in instrument development. Discusses a wide variety of techniques, including LC/GC, SFC, atomic emission spectroscopy, plasma spectroscopy, microwave induced plasmas, inductively coupled plasmas, direct current plasmas, and inductively coupled plasma/mass spectroscopy.
Author: James Hume Barnes
Publisher:
ISBN:
Category :
Languages : en
Pages : 678
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Author: Alan R. Date
Publisher: Blackie Academic and Professional
ISBN:
Category : Science
Languages : en
Pages : 282
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Author: R. Duane Satzger
Publisher:
ISBN:
Category : Mass spectrometry
Languages : en
Pages : 202
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Author: John R. Dean
Publisher: John Wiley & Sons
ISBN: 111947874X
Category : Science
Languages : en
Pages : 255
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Book Description
A new edition of this practical approach to sampling, experimentation, and applications in the field of inductively coupled plasma spectrometry The second edition of Practical Inductively Coupled Plasma Spectrometry discusses many of the significant developments in the field which have expanded inductively coupled plasma (ICP) spectrometry from a useful optical emission spectroscopic technique for trace element analysis into a source for both atomic emission spectrometry and mass spectrometry, capable of detecting elements at sub-ppb (ng mL−1) levels with good accuracy and precision. Comprising nine chapters, this new edition has been fully revised and up-dated in each chapter. It contains information on everything you need to practically know about the different types of instrumentation as well as pre- and post-experimental aspects. Designed to be easily accessible, with a ‘start-to-finish’ approach, each chapter outlines the key practical aspects of a specific aspect of the topic. The author, a noted expert in the field, details specific applications of the techniques presented, including uses in environmental, food and industrial analysis. This edition: Emphasizes the importance of health and safety; Provides advanced information on sample preparation techniques; Presents an updated chapter on inductively coupled plasma mass spectrometry; Features a new chapter on current and future development in ICP technology and one on practical trouble shooting and routine maintenance. Practical Inductively Coupled Plasma Spectrometry offers a practical guide that can be used for undergraduate and graduate students in the broad discipline of analytical chemistry, which includes biomedical science, environmental science, food science and forensic science, in both distance and open learning situations. It also provides an excellent reference for those in postgraduate training in these fields.
Author: D. L. Windsor
Publisher:
ISBN:
Category :
Languages : en
Pages : 25
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Book Description
The performance of the inductively-coupled plasma (ICP) as an element selective gas chromatographic (GC) detector is investigated. Special emphasis is placed on evaluating the ability of the ICP to perform simultaneous multi-element analyses on each component of a mixture. In general, ICP detection limits, linear dynamic ranges and selectivities are shown to compare favorably with those which have been observed for the flame photometric detectors (FPD) and microwave-excited plasma detectors (MEPD). (Author).
Author: Kirk Edward Lokits
Publisher:
ISBN:
Category :
Languages : en
Pages : 115
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Book Description
Inductively coupled mass spectrometry has, over the years, been a useful tool for the analytical chemist through the capability to qualitatively and quantitatively determine the elemental composition of unknown inorganic substances. Identification has occurred in a large variety of sample matrices such as, water, soil, inks, and industrial wastes. Within the last decade the matrix of interest has expanded into the biological realm. The ability to separate these complex bio-matrices requires reverse phase separation and usually implies the use of an organic modifier in the mobile phase. Due to the nature of the argon plasma, the use of carbon based modifiers destabilizes the plasma at the standard flow rates, decreasing the available ionization energy and depositing carbon on the sampling cone, clogging the entrance into the mass spectrometer interface. Current research involves evaluating commercially available micro-flow nebulizers which can allow the introduction of organic modifiers for increased chromatographic resolution of sample analytes because of the much lower solvent load to the plasma. Comparisons of various capillary flow nebulizers and spray chamber configurations are presented. An in-house spray chamber designed by the author is also evaluated. Sensitive and selective techniques for detecting phosphorus- and sulfur- based analytes with an ICPMS equipped with an rf only driven octopole collision/reaction cell (CRC) are investigated. The first technique utilizes Xe gas to reduce and remove polyatomic interferences from 31P and 32S. The second uses an oxidation reaction to form new product ions, 31P16O+ and 32S16O+, to move elemental phosphorous and sulfur away from the mass range of elemental interferences. The remaining focus of this dissertation is to utilize these earlier experiments and data from interfacing capillary flows into the Ar plasma to establish a qualitative and quantitative method for antisense oligonucleotides. This study describes a method for the analytical separation of 21-24-mer oligonucleotides using an RP C18 capillary column. Spectral data are comprised of element specific 31P and 32S, found in the phosphorothioate oligonucleotide backbone. UV (DAD) and elemental 31P and 32S data are obtained simultaneously through direct coupling of the capillary HPLC system to the ICPMS. The scientific significance of the data contained in this dissertation developed a low ppt and reproducible Cr speciation method and lays the foundation for Cr speciation in more complex matrices. The establishment of five interfacing variations of capillary flow nebulizers and four different spray chambers on the 7500ce displayed total consumption sample introduction, without degrading plasma performance. The introduction of O2 into an octopole collision reaction cell for the first time in ICPMS analysis allows for additional applications in ICPMS ion-molecule chemistry and the possibility of using other reactive gases in the octopole (NH3, CH4). These studies for the first time, institute the use of element specific synthetic P/S tags in phosphorothioates and natural P tags in biological oligonucleotides to qualitatively and quantitatively detect their presence by ICPMS. The methodology generated an alternative way to quantitate oligonucleotides and assist in the advancement of clinical trails profiling metabolite and pharmacokinetic data for developing anti-sense oligonucleotides.
Author: Kevin J. Mulligan
Publisher:
ISBN:
Category : Gas chromatography
Languages : en
Pages : 300
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Book Description
