Author: B. ParsaPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A Sequential Radiochemical Procedure for Isotopic Analysis of Uranium and Thorium in Soil
Author: B. ParsaThe Determination of Uranium and Thorium Isotopes in Water, Rock, and Soil Samples by Alpha Spectrometry
Author: Stephen DonivanPublisher:
ISBN:
Category : Alpha ray spectrometry
Languages : en
Pages : 18
Book Description
Determination of Total and Isotopic Uranium and Total Thorium in Soils by Inductively Coupled Plasma-Mass Spectrometry
Author: RN. BolinPublisher:
ISBN:
Category : Inductively coupled plasma mass spectrometry
Languages : en
Pages : 12
Book Description
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.
Standard Test Method for Analysis of Total and Isotopic Uranium and Total Thorium in Soils by Inductively Coupled Plasma-Mass Spectrometry Withdrawn 2015
Author: Karst Bauxites
Author: G. BárdossyPublisher: Elsevier
ISBN: 0444597530
Category : Nature
Languages : en
Pages : 450
Book Description
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.
Uranium in the Environment
Author: Broder J. MerkelPublisher: Taylor & Francis
ISBN: 3540283633
Category : Nature
Languages : en
Pages : 909
Book Description
This book presents the results from the Uranium Mining and Hydrogeology Congress held in September 2005, in Freiberg, Germany. It addresses scientists and engineers involved in the areas of uranium mining and milling sites, clean-up measures, emissions of nuclear power plants and radioactive waste disposal, as well as political decision-makers. The topics covered are: impact on groundwater from radionuclide emission, analytical specification techniques, chemical toxicity, radioisotope plant uptake, microbiology, geochemical and reactive transport, case studies on active and abandoned uranium mines and milling sites, long-term storage of radioactive waste, passive in situ treatment techniques and risk assessment studies. The accompanying CD-ROM includes all papers in colour.
Radiochemical Procedures for the Determination of Selected Members of the Uranium and Thorium Series
Author: Gene Leslie SmithsonStrategy and Methodology for Radioactive Waste Characterization
Author: International Atomic Energy AgencyPublisher: IAEA
ISBN:
Category : Business & Economics
Languages : en
Pages : 188
Book Description
Over the past decade significant progress has been achieved in the development of waste characterization and control procedures and equipment as a direct response to ever-increasing requirements for quality and reliability of information on waste characteristics. Failure in control procedures at any step can have important, adverse consequences and may result in producing waste packages which are not compliant with the waste acceptance criteria for disposal, thereby adversely impacting the repository. The information and guidance included in this publication corresponds to recent achievements and reflects the optimum approaches, thereby reducing the potential for error and enhancing the quality of the end product. -- Publisher's description.
Handbook of Radioactivity Analysis
Author: Michael F. L'AnnunziataPublisher: Academic Press
ISBN: 0123848733
Category : Medical
Languages : en
Pages : 1420
Book Description
Authoritative reference providing the principles, practical techniques, and procedures for the accurate measurement of radioactivity.
Sources, Effects and Risks of Ionizing Radiation, United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) 2016 Report
Author: United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR)Publisher: United Nations
ISBN: 9210600029
Category : Political Science
Languages : en
Pages : 512
Book Description
This report assesses the levels and effects of exposure to ionizing radiation. Scientific findings underpin radiation risk evaluation and international protection standards. This report comprises a report with two underpinning scientific annexes. The first annex recapitulates and clarifies the philosophy of science as well as the scientific knowledge for attributing observed health effects in individuals and populations to radiation exposure, and distinguishes between that and inferring risk to individuals and populations from an exposure. The second annex reviews the latest thinking and approaches to quantifying the uncertainties in assessments of risk from radiation exposure, and illustrates these approaches with application to examples that are highly pertinent to radiation protection.