Download or read book Preparation and Certification of IRMM 1000a 20 Mg and IRMM 1000b 50 Mg written by and published by . This book was released on 2015 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the production and certification of IRMM-1000a and IRMM-1000b, uranium reference materials certified for the production date based on the 230Th/234U radiochronometer, which corresponds to the last chemical separation, i.e. the removal of any 230Th from the material to the maximum extent achievable. The starting material was low-enriched uranium with a relative mass fraction, m(235U)/m(U) of 3.6 %. The targeted completeness for the last chemical separation of the 230Th decay product from its parent nuclide 234U was achieved. The certified production date was assigned following ISO Guide 34:2009. The between unit-homogeneity and the stability of the certified value were assessed in accordance with ISO Guide 35:2006. The uncertainty of the certified value was estimated in compliance with the Guide to the Expression of Uncertainty in Measurement (GUM) and includes uncertainties related to characterisation, possible inhomogeneity and instability. The material is mainly intended for calibration of methods, quality control, and assessment of method performance with isotope mass spectrometry and radiometry techniques. As any reference material, it can also be used for control charts or validation studies. The certified reference material is available in two sizes: 20 mg (IRMM-1000a) and 50 mg uranium (IRMM-1000b) as dried uranyl nitrate in screw-cap TeflonÒ (PFA) vials.
Download or read book Preparation and Certification of IRMM 075 written by and published by . This book was released on 2007 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A set of 6 new synthetic mixtures with n(236U)/n(238U) isotope ratios varying from 10-4 to 10-9 has been prepared and certified. Natural uranium with low 236U isotope abundance and enriched 236U were both purified using well proven chemical methodology extensively tested in the preparation of other uranium synthetic mixtures such as IRMM-074. The purification involved separation on anion and cation columns followed by precipitation as peroxide. Manipulations were carried out in separate new glove-boxes to avoid cross contamination. The oxides were sintered into U3O8 in an oven installed in a glove-box with controlled humidity. Primary solutions of the same concentration were prepared by dissolving the oxides of 236U and natU. From the 236U solution four dilutions were made by weighing. Weighed amounts of the dilutions of 236U and weighed amounts of natU were mixed to form a set of n(236U)/n(238U) mixtures at a concentration of 1 mg U·g-1. The final solutions were dispensed into quartz ampoules which were subsequently flame sealed. Verification of the mixtures IRMM-075/1-6 was performed by TRITON TIMS measurements using Faraday collectors and secondary electron multipliers in combination with an RPQ energy filter for improved abundance sensitivity. The results agreed well with the certified values obtained from the mixing calculations. The uncertainties contributing to the final uncertainties of the isotopic ratios are the weighing errors, the measured impurities in each starting material, the stoichiometry of the oxides and the isotopic abundances of each. The method for the preparation and mixing is described and the certification and verification procedures are reported.
Download or read book Preparation and Certification of IRMM 1027m Large Sized Dried LSD Spike written by and published by . This book was released on 2009 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large sized dried spikes (LSD) have become a fundamental part of the fissile material control of irradiated nuclear fuel. In the frame of providing these spikes to the nuclear industry, a new set of LSD Spikes for the determination of uranium and plutonium by isotope dilution mass spectrometry in solutions of spent fuel from reprocessing plants has been prepared and certified for uranium and plutonium isotopic contents. The methodology followed was comparable to that of previous batches. The solution, made by dissolution of the starting materials in nitric acid, was dispensed directly into individual penicillin vials. As in previous campaign an automated system was introduced to dispense and weigh the vials. The new batch of large size dried spikes contains ca. 50 mg of uranium (235U abundance = 19.5%) and ca. 1.8 mg of plutonium (239Pu abundance = 97.8%) in each individual vial, covered with a light layer of organic material (cellulose acetate butyrate) as stabilizer. The U and Pu amount content was certified based on values from mass metrology of the validated automated system. Verification of the amount contents of the spike was done by IDMS at IRMM. The values measured for the dried covered spikes agreed well with those calculated from the weights of starting materials dissolved and the weights of the final solution.
Download or read book Highway and Urban Environment written by G.M. Morrison and published by Springer Science & Business Media. This book was released on 2007-09-19 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: With half of the world’s population now living in urban areas, and rapid urbanization continuing apace, it is essential that the growth of urban areas is supported by the development of adequate and sustainable infrastructure. This work offers comprehensive coverage of critical issues on the highway and urban environment which are key to understanding sustainability in the world's expanding urban areas.
Download or read book Compilation of Minimum and Maximum Isotope Ratios of Selected Elements in Naturally Occurring Terrestrial Materials and Reagents written by Tyler B. Coplen and published by . This book was released on 2002 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Documented variations in the isotopic compositions of some chemical elements are responsible for expanded uncertainties in the standard atomic weights published by the Commission on Atomic Weights and Isotopic Abundances of the International Union of Pure and Applied Chemistry. This report summarizes reported variations in the isotopic compositions of 20 elements that are due to physical and chemical fractionation processes (not due to radioactive decay) and their effects on the standard atomic weight uncertainties. For 11 of those elements (hydrogen, lithium, boron, carbon, nitrogen, oxygen, silicon, sulfur, chlorine, copper, and selenium), standard atomic weight uncertainties have been assigned values that are substantially larger than analytical uncertainties because of common isotope abundance variations in materials of natural terrestrial origin. For 2 elements (chromium and thallium), recently reported isotope abundance variations potentially are large enough to result in future expansion of their atomic weight uncertainties. For 7 elements (magnesium, calcium, iron, zinc, molybdenum, palladium, and tellurium), documented isotope-abundance variations in materials of natural terrestrial origin are too small to have a significant effect on their standard atomic weight uncertainties.
Download or read book Handbook of Reference Methods for Plant Analysis written by Yash Kalra and published by CRC Press. This book was released on 1997-12-29 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Reference Methods for Plant Analysis is an outstanding resource of plant analysis procedures, outlined in easy-to-follow steps and laboratory-ready for implementation. Plant laboratory preparation methods such as dry ashing and acid and microwave digestion are discussed in detail. Extraction techniques for analysis of readily soluble elements (petiole analysis) and quick test kits for field testing are also presented. This handbook consolidates proven, time tested methods in one convenient source. Plant scientists in production agriculture, forestry, horticulture, environmental sciences, and other related disciplines will find the Handbook a standard laboratory reference. The Handbook was written for the Soil and Plant Analysis Council, Inc., of which the editor is a board member. The council aims to promote uniform soil test and plant analysis methods, use, interpretation, and terminology; and to stimulate research on the calibration and use of soil testing and plant analysis. This reference will help readers reach these important goals in their own research.
Download or read book Extraction Chromatography written by and published by Elsevier. This book was released on 1975-06-01 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extraction Chromatography
Download or read book Handbook of Bioanalytics written by Bogusław Buszewski and published by Springer Nature. This book was released on 2022-06-30 with total page 1091 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an authoritative review of analytical methods used for diagnostics, medical therapy and for forensic purposes. Divided into 4 parts, the book discusses new challenges in bioanalytics, covers bioanalysis as a source of clinical, pharmaceutical and forensic information, explores natural resources as a source of biologically active compounds, and offers new analytical strategies and equipment solutions. Written by interdisciplinary expert academics, this work will appeal to a wide readership of students, researchers and professionals interested in the fields of medicine, chemistry, pharmaceutical, life and health sciences, engineering and environmental protection. Clinicians and employees of forensic laboratories will also find this work instructive and informative.
Download or read book Chemical Marine Monitoring written by Philippe Quevauviller and published by John Wiley & Sons. This book was released on 2011-08-24 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wide- scale chemical monitoring programmes are required by international conventions and European Union policies such as the Water Framework Directive (2000/60/EC) and the new EU Marine Strategy Framework Directive (MSFD). This entails all waters, including transitional and coastal waters, sediments and biota. The final volume in the Water Quality Measurement Serieshighlights policy frameworks and analytical trends with an emphasis on laboratory methods and quality control. Within this comprehensive text, the following sections are included: Setting the Scene; monitoring of pollutants Policy Settings; international conventions and EU marine strategy Marine monitored parameters; trace elements, chemical species, organic micropollutants, and nutrients Types of monitoring; classical chemical monitoring, biomonitoring and in-situ methods Quality assurance; certified reference materials for marine monitoring Research and developments; the role of sediments in coastal monitoring, and passive sampling technologies Chemical Marine Monitoring: Policy Framework and Analytical Trends is intended for postgraduates and researchers working in analytical chemistry and its application to environmental and health analyses. Those interested in developing new methods and materials in relation to drinking water regulations with also find this book beneficial.
Download or read book Quantifying Uncertainty in Analytical Measurement written by Eurachem/CITAC Working Group and published by . This book was released on 2000-01-01 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of Trace Elements written by Zeev B. Alfassi and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: The best way to determine trace elements! This easy-to-use handbook guides the reader through the maze of all modern analytical operations. Each method is described by an expert in the field. The book highlights the advantages and disadvantages of individual techniques and enables pharmacologists, environmentalists, material scientists, and food industry to select a judicious procedure for their trace element analysis.
Download or read book Quantitative Proteomics written by Claire E Eyers and published by Royal Society of Chemistry. This book was released on 2014 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a component of post-genome science, the field of proteomics has assumed great prominence in recent years. Whereas quantitative analyses focussed initially on relative quantification, a greater emphasis is now placed on absolute quantification and consideration of proteome dynamics. Coverage of the topic of quantitative proteomics requires consideration both of the analytical fundamentals of quantitative mass spectrometry and the specific demands of the problem being addressed. Quantitative Proteomics aims to outline the state of the art in mass spectrometry-based quantitative proteomics, describing recent advances and current limitations in the instrumentation used, together with the various methods employed for generating high quality data. Details on both strategies describing how stable isotope labelling can be applied and methods for performing quantitative analysis of proteins in a label-free manner are given. The utility of these strategies to understanding cellular protein dynamics are then exemplified with chapters looking at spatial proteomics, dynamics of protein function as determined by quantifying changes in protein post-translational modification and protein turnover. Finally, a key application of these techniques to biomarker discovery and validation is presented, together with the rapidly developing area of quantitative analysis of protein-based foodstuffs. This exemplary book is essential reading for analytical and biological mass spectrometrists working in proteomics research, as well as those undertaking either fundamental or clinical-based investigations with an interest in understanding protein dynamics and/or biomarker assessment.
Download or read book Soil Sampling for Environmental Contaminants written by Agence internationale de l'énergie atomique and published by . This book was released on 2004 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a guide for analytical and radioanalytical laboratories. The protocols described in the report help specialists to improve the quality and reliability of their analysis. The report will help Member State laboratories in developing countries to assess environmental contamination of soils and develop strategies for remediation.
Download or read book Applications and Experiences of Quality Control written by Ognyan Ivanov and published by BoD – Books on Demand. This book was released on 2011-04-26 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rich palette of topics set out in this book provides a sufficiently broad overview of the developments in the field of quality control. By providing detailed information on various aspects of quality control, this book can serve as a basis for starting interdisciplinary cooperation, which has increasingly become an integral part of scientific and applied research.
Download or read book Safeguards Techniques and Equipment written by International Atomic Energy Agency and published by . This book was released on 2011 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1990s saw significant developments in the global non-proliferation landscape, resulting in a new period of safeguards development. The current publication, which is the second revision and update of IAEA/NVS/1, is intended to give a full and balanced description of the safeguards techniques and equipment used for nuclear material accountancy, containment and surveillance measures, environmental sampling, and data security. New features include a section on new and novel technologies. As new verification measures continue to be developed, the material in this book will be reviewed periodically and updated versions issued.
Download or read book Oxford Textbook of Clinical Nephrology written by Neil N. Turner and published by Oxford University Press. This book was released on 2015-10-29 with total page 3045 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fourth edition of the Oxford Textbook of Clinical Nephrology builds on the success and international reputation of the publication as an important resource for the practising clinician in the field. It provides practical, scholarly, and evidence-based coverage of the full spectrum of clinical nephrology, written by a global faculty of experts. The most relevant and important reference to clinical nephrology, this is an authoritative and comprehensive textbook combining the clinical aspects of renal disease essential to daily clinical practice with extensive information about the underlying basic science and current evidence available. Each section of the textbook has been critically and comprehensively edited under the auspices of a leading expert in the field. This new edition has been significantly expanded and reapportioned to reflect developments and new approaches to topics, and includes treatment algorithms to aid and enhance patient care where possible. The fourth edition offers increased focus on the medical aspects of transplantation, HIV-associated renal disease, and infection and renal disease, alongside entirely new sections on genetic topics and clinical and physiological aspects of fluid/electrolyte and tubular disorders. The emphasis throughout is on marrying advances in scientific research with clinical management. Richly illustrated throughout in full colour, this is a truly modern and attractive edition which reinforces the Oxford Textbook of Clinical Nephrology's position as an indispensable reference work of consistent quality and reliability. Enriched and refined by careful revision, this new edition continues the tradition of excellence. This print edition of The Oxford Textbook of Clinical Nephrology comes with a year's access to the online version on Oxford Medicine Online. By activating your unique access code, you can read and annotate the full text online, follow links from the references to primary research materials, and view, enlarge and download all the figures and tables. Oxford Medicine Online is mobile optimized for access when and where you need it.
Download or read book Nuclear Forensic Analysis written by Kenton J. Moody and published by CRC Press. This book was released on 2014-12-10 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its second edition, Nuclear Forensic Analysis provides a multidisciplinary reference for forensic scientists, analytical and nuclear chemists, and nuclear physicists in one convenient source. The authors focus particularly on the chemical, physical, and nuclear aspects associated with the production or interrogation of a radioactive sample.
