Download or read book Studies of Chromium VI Reactions with Sulfur containing Compounds written by Muirhead. Katharine Ann Myers and published by . This book was released on 1971 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetics and Mechanisms of the Reactions of Chromium VI with Sulfur containing Compounds in Aqueous Acid Solution written by Dwight Craig Ramdon and published by . This book was released on 2002 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remediation of Chromium VI in the Vadose Zone written by Min Ahn and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Immobilization and detoxification of chromium in the vadose zone is made possible by the existence of an effective reductant, SO2, that exists in a gaseous form at room temperature. Experimental studies were designed to characterize stoichiometry and kinetics of chromium reduction both in aqueous solutions at pH values near neutrality and in soil. First, batch experiments and elemental analyses were conducted to characterize the stoichiometry and kinetics of Cr(VI) reduction in water. The stoichiometric ratio of S(IV) removed to Cr(VI) removed ranged between 1.6 and 1.8. The overall reaction is believed to be the result of a linear combination of two reactions in which dithionate is an intermediate and sulfate is the stable oxidized product. The reaction was also rapid, with the half-time of about 45 minutes at pH 6 and about 16 hours at pH 7. A two-step kinetic model was developed to describe changes in concentrations of Cr(VI), S(IV), and S(V). Nonlinear regression was applied to obtain the kinetic parameters. The rate of reaction was assumed to be second-order with respect to [Cr(VI)] and first-order with respect to [S(IV)], and [S(V)]. The values for the rate coefficient for the first reaction (k1) were found to be 4.5 ("10%), 0.25 ("9.4%) (mM-2h-1) at pH 6 and 7, respectively. The values of the rate coefficient for the second reaction (k2) were 25 ("29%), 1.1 ("30%) (mM-2h-1) at pH 6 and 7, respectively. The reaction rate decreased as pH increased. Experiments showed that the rate at pH 7 was lower than that at pH 6 by one order of magnitude. Second, batch experiments and elemental analyses were conducted to characterize the stoichiometry and kinetics of Cr(VI) reduction in soil. The stoichiometric ratio of S(IV) removed to Cr(VI) removed was almost 2, which is slightly higher than that for the reaction in water. This higher value may be due to S(IV) oxidation by soil-derived Fe(III). The reaction was rapid, with the half-time less than 2 minutes, which is faster than in water. The rate coefficients, k1 and k2, were 22 ("41%) and 13 ("77%) (M-2h-1), respectively.
Download or read book Chromium Compounds Advances in Research and Application 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-06-21 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chromium Compounds—Advances in Research and Application: 2013 Edition is a ScholarlyBrief™ that delivers timely, authoritative, comprehensive, and specialized information about Chromates in a concise format. The editors have built Chromium Compounds—Advances in Research and Application: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Chromates in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Chromium Compounds—Advances in Research and Application: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Studies of the Exchange Reaction Between Chromium III and Chromium VI written by Carl Altman and published by . This book was released on 1957 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chromium VI Handbook written by Jacques Guertin and published by CRC Press. This book was released on 2004-12-28 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: Put together by a team of scientists, engineers, regulators, and lawyers, the Chromium(VI) Handbook consolidates the latest literature on this topic. The broad scope of this book fills the need for a comprehensive resource on chromium(VI), improving the knowledge of this contaminant at a time when the extent and degree of the problem is still being
Download or read book Studies of the Reactions Between the Chromium VI Ion and Some Biological Reductants written by Donovan Anthony Dixon and published by . This book was released on 1992 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Isotope Dilution Mass Spectrometry written by Jose Alonso and published by Royal Society of Chemistry. This book was released on 2019-03-22 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Isotope Dilution Mass Spectrometry (IDMS) has become an essential tool in research laboratories and is increasingly used in routine analysis labs (including environmental, food safety and clinical applications). This is the first textbook to present a comprehensive and instructive view of the theory and applications of this growing technique. The main objective of this book is to cover the theory and applications of Isotope Dilution in Analytical Chemistry. The scope is comprehensive to include elemental analysis, speciation analysis, organic analysis and biochemical and clinical analysis together with applications in metabolism studies and traceability of goods. Until now there have been no books published with the same general scope (only book chapters on particular applications). This is a textbook focused at post-graduate level covering the basic knowledge required for doctoral studies in this field. Isotope Dilution Mass Spectrometry will also outline practical applications of interest for routine testing laboratories where isotope dilution procedures are implemented or can be implemented in the future. This unique book covers all the theoretical and practical aspects of Isotope Dilution Mass Spectrometry (IDMS). Due to the increasing application of IDMS in many research laboratories and the increasing implementation of IDMS methodologies in routine testing laboratories, scientists in industry and working in or affiliated to this area will this an invaluable source of information. Concerning the theoretical aspects, the authors present a uniform theoretical background which grows from previous developments in Organic, Speciation and Elemental analysis both in their own laboratory and in other laboratories around the world. This general approach will be simpler and will also include new emerging fields such as quantitative proteomics and metabolism studies.
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1994 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coordination Chemistry Research Progress written by Kevin S. Verley and published by Nova Publishers. This book was released on 2008 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coordination chemistry is the study of compounds formed between metal ions and other neutral or negatively charged molecules. Coordination chemistry includes areas of inorganic solid state chemistry, organometallic chemistry and bioinorganic chemistry, as well as applications to analytical chemistry, catalysis, industrial chemistry and materials science.
Download or read book Chromium Oxidations in Organic Chemistry written by G. Cainelli and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chromium oxidation, well known and widely explored in organic chemistry since the very beginning of this science, is a topic of current interest for the organic chemist as evidenced by the continuous development of new techni ques and procedures reported in the literature. Chromium oxidation is a simple process which can be easily performed in the laboratory and scaled up in industry as well. Although almost every oxidizable organic functional group may undergo chromium oxidation, the most important fields of appli cation are the oxidation of alcohols, allylic and benzylic oxidation, oxidative degradation and oxidation of some organometallic compounds. A high degree of selectivity is often possible by choosing the most suitable reagent among those several ones now available. This book takes account of the various functional groups that undergo oxidation and the entire literature up to 1982. It has been written in the hope to help the synthetic organic chemist in his experimental work. For this purpose a number of tables comprising yields and references have been included; detailed descriptions of typical procedures are meant to show the experimental conditions and the scope of the reactions. We wish to thank Dr. Mario Orena for his valuable scientific and technical assistence and Prof. Bruno Camerino, who read the entire manuscript and corrected many of the errors. Bologna, February 1984 Gianfranco Cainelli Giuliana Cardillo Table of Contents I. Introduction . . . . . . . . . . .
Download or read book Inorganic Chromium III Compounds written by Tiina Santonen and published by World Health Organization. This book was released on 2009 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document on inorganic chromium (III) compounds provides summaries of the relevant scientific information concerning the potential effects of these chemicals upon human health and/or the environment. Chemical safety cards on the most common inorganic trivalent chromium compounds are reproduced in this document.
Download or read book Mass Spectrometry of Inorganic and Organometallic Compounds written by William Henderson and published by John Wiley & Sons. This book was released on 2005-07-15 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first modern book to treat inorganic and organometallic mass spectrometry simultaneously. It is textbook and handbook in one; as a textbook it introduces the techniques and gives hints on how to apply the various techniques, as a handbook it lists all available ionization techniques for just about any given compound. The book also includes non-mathematical explanations of how modern MS instruments work Mass Spectrometry of Inorganic and Organometallic Compounds will inspire the synthetic inorganic and organometallic chemist with the confidence to apply some of the new techniques to their characterization problems.
Download or read book Isotopic Analysis written by Frank Vanhaecke and published by John Wiley & Sons. This book was released on 2012-07-10 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by two very well-known and respected scientists in the field, this excellent practical guide is the first to cover the fundamentals and a wide range of applications, as well as showing readers how to efficiently use this increasingly important technique. From the contents: * The Isotopic Composition of the Elements * Single-Collector ICP-MS * Multi-Collector ICP-MS * Advances in Laser Ablation - Multi-Collector ICP-MS * Correction for Instrumental Mass Discrimination in Isotope Ratio Determination with Multi-Collector ICP-MS * Reference Materials in Isotopic Analysis * Quality Control in Isotope Ratio Applications * Determination of Trace Elements and Elemental Species Using Isotope Dilution ICP-MS * Geochronological Dating * Application of Multi-Collector ICP-MS to Isotopic Analysis in Cosmochemistry * Establishing the Basis for Using Stable Isotope Ratios of Metals as Paleoredox Proxies * Isotopes as Tracers of Elements Across the Geosphere-Biosphere Interface * Archaeometric Applications * Forensics Applications * Nuclear Applications * The Use of Stable Isotope Techniques for Studying Mineral and Trace Element Metabolism in Humans * Isotopic Analysis via Multi-Collector ICP-MS in Elemental Speciation A must-have for newcomers as well as established scientists seeking an overview of isotopic analysis via ICP-MS.
Download or read book Monitored Natural Attenuation of Inorganic Contaminants in Ground Water written by and published by . This book was released on 2007 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: V.3 ... consists of individual chapters that describe 1) the conceptual background for radionuclides, including tritium, radon, strontium, technetium, uranium, iodine, radium, thorium, cesium, plutonium-americium and 2) data requirements to be met during site characterization.
Download or read book Metal Ions in Biological Systems written by Helmut Sigel and published by CRC Press. This book was released on 1979-07-01 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the connection between the chemistry of metal ions and their role for life, and covers complexes with a number of amino acids with chelatable side chain donor atoms. It discusses metal ion-protein interactions and the ligating ambivalency of nucleotides.
Download or read book Research in Progress written by and published by . This book was released on 1969 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
