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The Determination Of Uranium And Thorium Isotopes In Water Rock And Soil Samples By Alpha Spectrometry
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Book Synopsis The Determination of Uranium and Thorium Isotopes in Water, Rock, and Soil Samples by Alpha Spectrometry by : Stephen Donivan
Download or read book The Determination of Uranium and Thorium Isotopes in Water, Rock, and Soil Samples by Alpha Spectrometry written by Stephen Donivan and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :P. Wilkinson Publisher :Fisheries and Oceans, Scientific Information and Publications Branch ISBN 13 : Total Pages :68 pages Book Rating :4.:/5 (318 download)
Book Synopsis The Determination of Environmental Levels of Uranium and Thorium Series Isotopes and 137Cs in Aquatic and Terrestrial Samples by : P. Wilkinson
Download or read book The Determination of Environmental Levels of Uranium and Thorium Series Isotopes and 137Cs in Aquatic and Terrestrial Samples written by P. Wilkinson and published by Fisheries and Oceans, Scientific Information and Publications Branch. This book was released on 1985 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication details the analytical methods used at the Freshwater Institute for the radiochemical analysis of aquatic and terrestrial samples. Sample collection methods are described with emphasis on water sampling. A detailed "Calculations" section contains the mathematical formulae used to determine the absolute activity of each isotope analyzed.
Book Synopsis Isotopic Analysis of Uranium in Natural Waters by Alpha Spectrometry by : Kenneth W. Edwards
Download or read book Isotopic Analysis of Uranium in Natural Waters by Alpha Spectrometry written by Kenneth W. Edwards and published by . This book was released on 1968 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Total and Isotopic Uranium and Total Thorium in Soils by Inductively Coupled Plasma-Mass Spectrometry by : RN. Bolin
Download or read book Determination of Total and Isotopic Uranium and Total Thorium in Soils by Inductively Coupled Plasma-Mass Spectrometry written by RN. Bolin and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inductively coupled plasma-mass spectrometry (ICP-MS), using standard sample introduction by peristaltic pumping, is presented as a method to determine total and isotopic uranium (234U, 235U, 236U, and 238U) and thorium (232Th) in soil samples. Initial sample preparation consists of oven drying to determine moisture content, and grinding and mixing the soil to make it homogenous. This is followed by a nitric/hydrofluoric acid digestion to bring the uranium into solution. Bismuth (209Bi) is added prior to digestion to monitor for losses due to sample preparation and analysis. An additional digestion, using nitric/perchloric acid is performed if the total thorium concentration is required on the sample. The uranium and thorium content of this solution and the 235U/238U ratio are measured on an initial pass through the ICP-MS. The total uranium measurement is based on the 238U isotope measurement with correction for the presence of the U isotopes. To determine the concentration of the less abundant 234U and 236U isotopes, the digestate is further concentrated by using a solid phase extraction column (TRUSpec by EiChrom Industries, Inc.) before a second pass through the ICP-MS.
Book Synopsis Determination of Uranium Isotopes in Irradiated Thorium by : Robert S. Ondrejcin
Download or read book Determination of Uranium Isotopes in Irradiated Thorium written by Robert S. Ondrejcin and published by . This book was released on 1964 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-Precision Isotope Analysis Of Uranium And Thorium By Tims by : L. A. Neymark
Download or read book High-Precision Isotope Analysis Of Uranium And Thorium By Tims written by L. A. Neymark and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Geological Survey (USGS) Yucca Mountain Project Branch laboratory in Denver, Colorado, conducts routine high-precision isotope analyses of uranium (U) and thorium (Th) using thermal ionization mass-spectrometry (TIMS). The measurements are conducted by a solid-source mass-spectrometer equipped with a Faraday multi-collector system and an energy filter in front of an active-film-type secondary electron multiplier (SEM). The abundance sensitivity of the instrument (signal at mass 237 over {sup 238}U in natural U) with the energy filter is {approx} 15 x 10{sup -9} and peak tails are reduced by a factor of {approx}100 relative to the Faraday cup measurements. Since instrument installation in April 2004, more than 500 rock and water samples have been analyzed in support of isotope-geochemical studies for the U.S. Department of Energy's Yucca Mountain Project. Isotope ratios of sub-nanogram to microgram U and Th samples are measured on graphite-coated single-filament and double-filament assemblies using zone-refined rhenium filaments. Ion beams less than 5 millivolt (mV) are measured with the SEM, which is corrected for non-linearity on the basis of measurements of National Institute of Standards and Technology (NIST) U-500 and 4321 B standards with ion beams ranging from 0.01 to 8 mV. Inter-calibration between the SEM and the Faraday multi-collector is performed for every mass cycle using a {approx}5 mV beam switched between Faraday cup and SEM ('bridging' technique), because SEM-Faraday inter-calibrations prior to the measurement failed to produce acceptable results. Either natural ({sup 235}U) or artificial ({sup 236}U, {sup 229}Th) isotopes were used for the bridging. Separate runs are conducted for minor isotopes using SEM only. These techniques result in high within-run precisions of
Book Synopsis Determination of Isotopic Thorium in Biological Samples by Combined Alpha Spectrometry and Neutron Activation Analysis by :
Download or read book Determination of Isotopic Thorium in Biological Samples by Combined Alpha Spectrometry and Neutron Activation Analysis written by and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thorium is a naturally occurring element for whom all isotopes are radioactive . Many of these isotopes are alpha emitting radionuclides, some of which have limits for inhalation lower than plutonium in current regulations . Neutron activation analysis can provide for the low-level determination of 232Th but can not determine other isotopes of dosimetric importance . Biological and environmental samples often have large quantities of materials which activate strongly, limiting the capabilities of instrumental neutron activiation analysis . This paper will discuss the application of a combined technique using alpha spectrometry and radiochemical neutron activiation analysis for the determination of isotopic thorium.
Book Synopsis Radiometric Method for the Determination of Uranium in Water by : Carl Thomas Bishop
Download or read book Radiometric Method for the Determination of Uranium in Water written by Carl Thomas Bishop and published by . This book was released on 1979 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interlaboratory Comparison of Analytical Methods for the Determination of Natural Series Uranium and Thorium Isotopes in Rock Samples by : A. B. Mackenzie
Download or read book Interlaboratory Comparison of Analytical Methods for the Determination of Natural Series Uranium and Thorium Isotopes in Rock Samples written by A. B. Mackenzie and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Procedures for the Determination of Thorium and Radium in Uranium Process Samples by : Henry G. Petrow
Download or read book Analytical Procedures for the Determination of Thorium and Radium in Uranium Process Samples written by Henry G. Petrow and published by . This book was released on 1961 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Collected Papers on Methods of Analysis for Uranium and Thorium by : Frank Saverio Grimaldi
Download or read book Collected Papers on Methods of Analysis for Uranium and Thorium written by Frank Saverio Grimaldi and published by . This book was released on 1954 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Isotopic analysis of Uranium in natural waters by alpha spectrometry by : Kenneth W. Edwards
Download or read book Isotopic analysis of Uranium in natural waters by alpha spectrometry written by Kenneth W. Edwards and published by . This book was released on 1968 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Karst Bauxites written by G. Bárdossy and published by Elsevier. This book was released on 2013-10-22 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Karst Bauxites: Bauxite Deposits on Carbonate Rocks presents a comparison of bauxite regions using mathematical statistics methods. This book is divided into eight chapters that highlight the quantitative processing and assessment of the information available for bauxites. The opening chapters present observational and analytical evidence concerning karst bauxite, with particular emphasis on Hungarian bauxite deposits. The typical features of bauxites are analyzed from a variety of aspects and results from different bauxite regions are compared. Other chapters consider the feature of metamorphosed karst bauxites. The remaining chapters discuss the conditions of formation of karst bauxites and with the factors controlling their geographic and stratigraphic distribution. This book will prove useful to geologists, mineralogists, and researchers.
Book Synopsis Bibliography of Mass Spectroscopy Literature for 1970 by :
Download or read book Bibliography of Mass Spectroscopy Literature for 1970 written by and published by . This book was released on 1972 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Natural Uranium and Thorium Content by Alpha Spectrometry by : C. Goedicke
Download or read book Determination of Natural Uranium and Thorium Content by Alpha Spectrometry written by C. Goedicke and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
