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Author : B.R. Harvey
Publisher :
ISBN 13 : 9780009534461
Total Pages : pages
Book Rating : 4.5/5 (344 download)
Download or read book The Determination of Technetium-99 in Environmental Materials written by B.R. Harvey and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 : 9788755013681
Total Pages : 29 pages
Book Rating : 4.0/5 (136 download)
Download or read book Determination of Technetium-99 in Environmental Samples by Solvent Extraction at Controlled Valence written by and published by . This book was released on 1987 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. Desmet
Publisher : Springer Science & Business Media
ISBN 13 : 9400941897
Total Pages : 416 pages
Book Rating : 4.4/5 (9 download)
Download or read book Technetium in the Environment written by G. Desmet and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of technetium (in 1937, by Perrier and Segre), technetium-99 and technetium-99m have become most familiar in the specialised literature, the behaviour of the former being of concern regarding its health impact, the latter having been used intensively in medical tests for many years. The knowledge of the characteristics and behaviour of this element in nature is currently increasing exponentially. It has become clear, however, that there is still a serious shortage of information needed to assess properly its burden and impact on man and his environment. Technetium may indeed be released from nuclear installations or as a waste product from medical applications. It is generally considered to be highly mobile as the anion TcOi, but it is also suspected to be readily reduced in soils and metabolised in living beings into lower oxidation states. The seminar was planned to analyse thoroughly the experimental results obtained up to now and to make recommendations of specific issues requiring further research. This book presents the papers of the different sessions in the order of presentation, and the conclusions drawn by three discussion groups which dealt separately with: problems of sources and distribution of man-made technetium and its radiological consequences; the chemical behaviour of technetium in different ecosystems; biochemical reactions and binding with macromolecules in various life systems. vi Preface The editors, together with the Programme Committee of the Seminar, wish to express their gratitude to the chairmen of the different sessions for their summary of the group discussions.
Author : Great Britain. Directorate of Fisheries Research
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (127 download)
Download or read book The determination of Technetium-90 in environmental materials written by Great Britain. Directorate of Fisheries Research and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : F. Wigley
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (74 download)
Download or read book Optimised method for the routine determination of Technetium-99 in environmental samples by liquid scintillation counting written by F. Wigley and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kaliaperumal Rajendran
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (181 download)
Download or read book The Development and Application of an Analytical Method for the Determination of Technetium-99 in the Aquatic Environment written by Kaliaperumal Rajendran and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Standard Guide for Determination of Technetium-99 in Soil written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S.E. Long
Publisher :
ISBN 13 : 9780705814775
Total Pages : 33 pages
Book Rating : 4.8/5 (147 download)
Download or read book A literature survey of techniques for the analytical determination of technetium-99 written by S.E. Long and published by . This book was released on 1988 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of Technetium-99 by Liquid Scintillation Counting written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A rapid and reliable method for analyzing technetium-99 in a wide variety of environmental samples, including waters, soils, stream sediments, and vegetations, has been developed. The procedure entails oxidizing the technitium to the heptavalent state and dissolving it in 6 N sulfuric acid. From that medium the technetium is quantitatively and selectively extracted into tributyl phosphate. A portion of the extract is then added to a scintillation cocktail, and technetium-99 activity is measured by liquid scintillation counting. Since a relatively large sample can be handled, the method can detest as little as 0.016 pCI 99Tc/ml water, 0.1 pCi 99Tc/g soil or sediment, and 0.2 pCi 99Tc/g vegetation. The procedure has also been adapted to analyzing urine samples, in which technetium activity as low as 0.12 pCi/ml can be detected.
Author : National Academies of Sciences, Engineering, and Medicine
Publisher : National Academies Press
ISBN 13 : 0309445310
Total Pages : 264 pages
Book Rating : 4.3/5 (94 download)
Download or read book Molybdenum-99 for Medical Imaging written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-11-28 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The decay product of the medical isotope molybdenum-99 (Mo-99), technetium-99m (Tc-99m), and associated medical isotopes iodine-131 (I-131) and xenon-133 (Xe-133) are used worldwide for medical diagnostic imaging or therapy. The United States consumes about half of the world's supply of Mo-99, but there has been no domestic (i.e., U.S.-based) production of this isotope since the late 1980s. The United States imports Mo-99 for domestic use from Australia, Canada, Europe, and South Africa. Mo-99 and Tc-99m cannot be stockpiled for use because of their short half-lives. Consequently, they must be routinely produced and delivered to medical imaging centers. Almost all Mo-99 for medical use is produced by irradiating highly enriched uranium (HEU) targets in research reactors, several of which are over 50 years old and are approaching the end of their operating lives. Unanticipated and extended shutdowns of some of these old reactors have resulted in severe Mo-99 supply shortages in the United States and other countries. Some of these shortages have disrupted the delivery of medical care. Molybdenum-99 for Medical Imaging examines the production and utilization of Mo-99 and associated medical isotopes, and provides recommendations for medical use.
Author : G. H. Kramer
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book The determination of technetium-99 in urine written by G. H. Kramer and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (359 download)
Download or read book Sampling of Technetium-99 in Vegetation and Soils in the Vicinity of Operating Gaseous Diffusion Facilities written by and published by . This book was released on 1980 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309130395
Total Pages : 220 pages
Book Rating : 4.3/5 (91 download)
Download or read book Medical Isotope Production Without Highly Enriched Uranium written by National Research Council and published by National Academies Press. This book was released on 2009-06-27 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the product of a congressionally mandated study to examine the feasibility of eliminating the use of highly enriched uranium (HEU2) in reactor fuel, reactor targets, and medical isotope production facilities. The book focuses primarily on the use of HEU for the production of the medical isotope molybdenum-99 (Mo-99), whose decay product, technetium-99m3 (Tc-99m), is used in the majority of medical diagnostic imaging procedures in the United States, and secondarily on the use of HEU for research and test reactor fuel. The supply of Mo-99 in the U.S. is likely to be unreliable until newer production sources come online. The reliability of the current supply system is an important medical isotope concern; this book concludes that achieving a cost difference of less than 10 percent in facilities that will need to convert from HEU- to LEU-based Mo-99 production is much less important than is reliability of supply.
Author :
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (898 download)
Download or read book Analytical Method for the Radiochemical Determination of Technetium-99 in Nitrate Solutions by Solvent Extraction of Tetraphenylarsonium Pertechnetate written by and published by . This book was released on 1960 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Allen Gawenis
Publisher :
ISBN 13 :
Total Pages : 340 pages
Book Rating : 4.:/5 (487 download)
Download or read book Aspects of the Environmental Chemistry of Technetium written by James Allen Gawenis and published by . This book was released on 2001 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technetium-99 is a high yield daughter product from fission reactions. The chemistry of this isotope makes it an environmental contaminant that is difficult to remove. This dissertation describes three aspects regarding the chemistry of technetium and its chemical analog, rhenium. The second chapter discusses a new method of extracting anionic metals from water with supercritical fluid carbon dioxide. Efficient extraction of tetrabutylammonium perrhenate was performed with methanol modified supercritical fluid carbon dioxide. This extraction was performed without complexation of rhenium prior to extraction. The third chapter examines the use of host-guest chemistry to selectively remove pertechnetate from aqueous systems. A metallated cyclotriveratrylene-type host selectively removed pertechnetate from saline at high efficiency in the presence of similar anions. The fourth chapter describes the possible use of technetium, in various chemical complexes, as a tracer for hydrological flows. Technetium-99m pharmaceuticals were added to different soils and water types to determine their sorption characteristics. Pertechnetate was found to have the lowest sorption while the complexed pharmaceuticals showed mixed, but higher, sorption.
Author : United Kingdom Atomic Energy Authority
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (865 download)
Download or read book Analytical Method for the Radiochemical Determination of Technetium-99 in Nitrate Solutions by Solvent Extraction of Tetraphenylarsonium Pertechnetate written by United Kingdom Atomic Energy Authority and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael F. L'Annunziata
Publisher : Academic Press
ISBN 13 : 0128143967
Total Pages : 1076 pages
Book Rating : 4.1/5 (281 download)
Download or read book Handbook of Radioactivity Analysis written by Michael F. L'Annunziata and published by Academic Press. This book was released on 2020-03-07 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Radioactivity Analysis: Radiation Physics and Detectors, Volume One, and Radioanalytical Applications, Volume Two, Fourth Edition, constitute an authoritative reference on the principles, practical techniques and procedures for the accurate measurement of radioactivity - everything from the very low levels encountered in the environment, to higher levels measured in radioisotope research, clinical laboratories, biological sciences, radionuclide standardization, nuclear medicine, nuclear power, and fuel cycle facilities, and in the implementation of nuclear forensic analysis and nuclear safeguards. It includes sample preparation techniques for all types of matrices found in the environment, including soil, water, air, plant matter and animal tissue, and surface swipes.Users will find the latest advances in the applications of radioactivity analysis across various fields, including environmental monitoring, radiochemical standardization, high-resolution beta imaging, automated radiochemical separation, nuclear forensics, and more. Spans two volumes, Radiation Physics and Detectors and Radioanalytical Applications Includes a new chapter on the analysis of environmental radionuclides Provides the latest advances in the applications of liquid and solid scintillation analysis, alpha- and gamma spectrometry, mass spectrometric analysis, Cherenkov counting, flow-cell radionuclide analysis, radionuclide standardization, aerosol analysis, high-resolution beta imaging techniques, analytical techniques in nuclear forensics, and nuclear safeguards Describes the timesaving techniques of computer-controlled automatic separation and activity analysis of radionuclides Provides an extensive table of the radiation characteristics of most radionuclides of interest for the radioanalytical chemist
