Download or read book Quantifyng Rare Earth Element Content in High Concentrated Samples by K0 NAA written by Maryam Abdollahi Neisiani and published by . This book was released on 2017 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rare earth elements (REE) are comprised of lanthanide series, from lanthanum to lutetiumplus scandium and yttrium. Due to the rising applications of REEs in different fields oftechnology a lot of attention has been drawn to the extraction of these elements. Therefore, areliable and accurate characterization technique is required to determine variable levels of REEsstarting from mineral matrices all the way to processed samples. The aim of this work is toevaluate the capability of k0-neutron activation analysis (k0-NAA) implemented at PolytechniqueMontreal for accurate determination of rare earth elements in high concentrated mineral matrices. Individual factors affecting the measurements including nuclear data used for the calculations, neutron temperature effects, nuclear interferences, spectral interferences, gamma-ray selfattenuation and neutron self-shielding were investigated. Mono rare earth element standardsolutions and rare earth oxides were used to investigate these phenomena separately. Severalimprovements were applied to the current method. Analysis protocols were optimized in terms ofirradiation, decay and counting times to obtain accurate results in shorter turnaround times, anduncertainty contributions from aforementioned factors were evaluated. To validate the overallcapability of the improved k0-NAA method for REE, a certified reference material (CRM) fromCanadian Certified Reference Materials Project (REE-2) with REE content ranging from 7.2 mgkg-1for Yb to 9610 mg kg-1for Ce was used. The REE concentration was determined withuncertainty below 7% (at 95% confidence level) and proved to be consistent with the CRMcertified concentrations.
Download or read book Handbook of Rare Earth Elements written by Alfred Golloch and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-04-24 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Rare Earth Elements focuses on the essential role of modern instrumental analytics in the recycling, purification and analysis of rare earth elements. Due to their numerous applications, e.g. in novel magnetic materials for computer hardware, mobile phones and displays, rare earth elements have become a strategic and valuable resource. The detailed knowledge of rare earth element contents at every step of their life cycle is of great importance. This reference work was compiled with contribution from an international team of expert authors from Academia and Industry to presend a comprehensive discussion on the state-of-the-art of rare earth element analysis for industrial and scientific purposes, recycling processes and purification of REEs from various sources. Written with Analytical Chemists, Inorganic Chemists, Spectroscopists as well as Industry Practitioners in mind, the Handbook of Rare Earth Elements is an indispensable reference for everyone working with rare earth elements.
Download or read book The Quantitative Spectrographic Analysis of the Rare Earth Elements written by Velmer A. Fassel and published by . This book was released on 1948 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantification of Rare Earth Elements Using Laser induced Breakdown Spectroscopy written by and published by . This book was released on 2015 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, a study of the optical emission as a function of concentration of laser-ablated yttrium (Y) and of six rare earth elements, europium (Eu), gadolinium (Gd), lanthanum (La), praseodymium (Pr), neodymium (Nd), and samarium (Sm), has been evaluated using the laser-induced breakdown spectroscopy (LIBS) technique. Statistical methodology using multivariate analysis has been used to obtain the sampling errors, coefficient of regression, calibration, and cross-validation of measurements as they relate to the LIBS analysis in graphite-matrix pellets that were doped with elements at several concentrations. Each element (in oxide form) was mixed in the graphite matrix in percentages ranging from 1% to 50% by weight and the LIBS spectra obtained for each composition as well as for pure oxide samples. Finally, a single pellet was mixed with all the elements in equal oxide masses to determine if we can identify the elemental peaks in a mixed pellet. This dataset is relevant for future application to studies of fission product content and distribution in irradiated nuclear fuels. These results demonstrate that LIBS technique is inherently well suited for the future challenge of in situ analysis of nuclear materials. Finally, these studies also show that LIBS spectral analysis using statistical methodology can provide quantitative results and suggest an approach in future to the far more challenging multielemental analysis of ~ 20 primary elements in high-burnup nuclear reactor fuel.
Download or read book Advanced Technologies and Applications of Neutron Activation Analysis written by Lylia Alghem Hamidatou and published by . This book was released on 2019-04-17 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the advanced technologies and applications of neutron activation analysis (NAA). It discusses the latest developments influencing the performance and utility of different NAA techniques across wide areas of applications: nuclear technology, industry, medicine, clinical investigations, biology, geochemistry, soil contamination, waste management, diet, lifestyle and health, cosmology, archeology, forensic science, etc. The overall goal of the book is to promote innovation and development of NAA techniques, technologies, and nuclear culture by presenting high-quality chapters with numerous results at both national and international levels. The book will serve as a source for graduate and postgraduate students in nuclear sciences and applications and nuclear analytical techniques, experienced practitioners who want to implement or use other varieties of NAA, professional technicians and analysts, users of NAA, and other stakeholders who wish to better understand NAA techniques.
Download or read book Archaean Geochemistry written by A. Kröner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Archaean Geochemistry 1972 - 1984 The realisation that the continental crust contains well-preserved relics which date as far back as 4/5 of the Earth's age has given a great impetus to the study of early Precambrian terrains. As late as the mid-sixties the Archaean still constituted the 'terra-in cognita' of earth science. High metamorphic grades, poor out crop, and not least a widely assumed obliteration of early crustal records by convective recycling and thermal reworking had com bined to discourage research in this field. Many excellent local studies existed, notably around gold mining centres, but remained unrelated to a broader regional and theoretical understanding. This situation has changed as the consequence of two inter-related factors: (1) advances in isotopic methods and their application to Precambrian rocks, and (2) the recognition that some of the oldest terrains have retained a wealth of primary igneous and sedi mentary textures and even geochemical characteristics.
Download or read book Handbook of Rare Earth Elements written by Alfred Golloch and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-07-05 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reference work describes in its new edition still more up-to-date methods for the recycling and purifi cation processes of rare earth element analysis for industrial and scientific purposes alike. Due to their vast applications, from computer hardware to mobile phones and electric cars, REEs have become a valuable resource for our modern life. New topics: emission spectroscopy, analysis of environmental samples and pharmaceutical applications.
Download or read book Determination of rare earth elements in geological materials by neutron activation analysis using a group separation and high resolution gamma ray spectrometry written by T. W. Sanders and published by . This book was released on 1982 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sample Preparation for Trace Element Analysis written by Zoltan Mester and published by Elsevier. This book was released on 2003-12-16 with total page 1339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following the collection of a sample, every analytical chemist will agree that its subsequent preservation and processing are of paramount importance. The availability of high performance analytical instrumentation has not diminished this need for careful selection of appropriate pretreatment methodologies, intelligently designed to synergistically elicit optimum function from these powerful measurement tools. Sample Preparation for Trace Element Analysis is a modern, comprehensive treatise, providing an account of the state-of-the art on the subject matter. The book has been conceived and designed to satisfy the varied needs of the practicing analytical chemist. It is a multi-author work, reflecting the diverse expertise arising from its highly qualified contributors. The first five chapters deal with general issues related to the determination of trace metals in varied matrices, such as sampling, contamination control, reference materials, calibration and detection techniques. The second part of the book deals with extraction and sampling technologies (totaling 15 chapters), providing theoretical and practical hints for the users on how to perform specific extractions. Subsequent chapters overview seven major representative matrices and the sample preparation involved in their characterization. This portion of the book is heavily based on the preceding chapters dealing with extraction technologies. The last ten chapters are dedicated to sample preparation for trace element speciation. - First title to provide comprehensive sample preparation information, dealing specifically with the analysis of samples for trace elements. - The 39 chapters are authored by international leaders of their fields.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Extractive Metallurgy of Niobium written by A.K. Suri and published by Routledge. This book was released on 2017-11-13 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth and development witnessed today in modern science, engineering, and technology owes a heavy debt to the rare, refractory, and reactive metals group, of which niobium is a member. Extractive Metallurgy of Niobium presents a vivid account of the metal through its comprehensive discussions of properties and applications, resources and resource processing, chemical processing and compound preparation, metal extraction, and refining and consolidation. Typical flow sheets adopted in some leading niobium-producing countries for the beneficiation of various niobium sources are presented, and various chemical processes for producing pure forms of niobium intermediates such as chloride, fluoride, and oxide are discussed. The book also explains how to liberate the metal from its intermediates and describes the physico-chemical principles involved. It is an excellent reference for chemical metallurgists, hydrometallurgists, extraction and process metallurgists, and minerals processors. It is also valuable to a wide variety of scientists, engineers, technologists, and students interested in the topic.
Download or read book Trace Elements and Organic Chemicals in Stream bottom Sediments and Fish Tissues Red River of the North Basin Minnesota North Dakota and South Dakota 1992 95 written by Mark E. Brigham and published by . This book was released on 1998 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lunar Sourcebook written by Grant Heiken and published by CUP Archive. This book was released on 1991-04-26 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only work to date to collect data gathered during the American and Soviet missions in an accessible and complete reference of current scientific and technical information about the Moon.
Download or read book Using Geochemical Data written by Hugh Rollinson and published by Cambridge University Press. This book was released on 2021-05-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is a complete rewrite, and expansion of Hugh Rollinson's highly successful 1993 book Using Geochemical Data: Evaluation, Presentation, Interpretation. Rollinson and Pease's new book covers the explosion in geochemical thinking over the past three decades, as new instruments and techniques have come online. It provides a comprehensive overview of how modern geochemical data are used in the understanding of geological and petrological processes. It covers major element, trace element, and radiogenic and stable isotope geochemistry. It explains the potential of many geochemical techniques, provides examples of their application, and emphasizes how to interpret the resulting data. Additional topics covered include the critical statistical analysis of geochemical data, current geochemical techniques, effective display of geochemical data, and the application of data in problem solving and identifying petrogenetic processes within a geological context. It will be invaluable for all graduate students, researchers, and professionals using geochemical techniques.
Download or read book Water resources Investigations Report written by and published by . This book was released on 1997 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineralogical Applications of Crystal Field Theory written by Roger G. Burns and published by Cambridge University Press. This book was released on 1993-09-16 with total page 563 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this classic book provides an updated look at crystal field theory and its applications.
Download or read book Nomenclature of Inorganic Chemistry written by International Union of Pure and Applied Chemistry and published by Royal Society of Chemistry. This book was released on 2005 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 'Red Book' is the definitive guide for scientists requiring internationally approved inorganic nomenclature in a legal or regulatory environment.
