Download or read book Determination of Beta Activity in Water written by Franklin Butt Barker and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of Beta Activity in Water written by Franklin Butt Barker and published by . This book was released on 1963 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Method for the Determination of Beta Activity in Borehole Water written by United Kingdom Atomic Energy Authority and published by . This book was released on 1963 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiochemical Analysis written by and published by . This book was released on 1964 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Gross Beta Activity in Non Saline Water Test Method Using Thick Source written by British Standards Institute Staff and published by . This book was released on 1915-04-30 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water, Quality, Water testing, Radiation measurement, Beta-particles, Radionuclides, Radioactivity, Determination of content, Combustion test methods, Evaporation residue determination, Test equipment, Specimen preparation
Download or read book Water Quality Measurement of Gross Beta Activity in Non Saline Water Thick Source Method written by British Standards Institute Staff and published by . This book was released on 2008-12-31 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water, Quality, Water testing, Radiation measurement, Beta-particles, Radionuclides, Radioactivity, Determination of content, Combustion test methods, Evaporation residue determination, Test equipment, Specimen preparation
Download or read book Water Quality Measurement of Gross Alpha and Beta Activity Concentration in Non Saline Water Liquid Scintillation Counting Method written by British Standards Institute Staff and published by . This book was released on 1910-07-31 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water, Quality, Water testing, Radiation measurement, Alpha particles, Beta-particles, Radionuclides, Radioactive materials, Determination of content, Water resources, Potable water, Liquids, Scintillation counters
Download or read book Water Quality Measurement of Gross Alpha and Gross Beta Activity in Non Saline Water Thin Source Deposit Method written by British Standards Institute Staff and published by . This book was released on 1910-01-31 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water, Quality, Water testing, Radiation measurement, Alpha particles, Beta-particles, Radionuclides, Radioactive materials, Determination of content, Specimen preparation, Interferences (chemical), Test equipment
Download or read book The Determination of Alpha and Beta Activity in Rain Water with Pulse Analyser Type 1414A and Flow Counter Type 3 7 11559 Respectively written by W. P. Hutchinson and published by . This book was released on 1958 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Alpha and Beta Activity of Water and Sludge Samples written by and published by . This book was released on 1986-01-01 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Radiological Methods Measurement of Gross Beta Activity in Non saline Water written by British Standards Institute Staff and published by . This book was released on 1993-03-15 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water, Quality, Water testing, Radiation measurement, Beta-particles, Evaporation residue determination, Radioactive materials, Test equipment, Specimen preparation, Mathematical calculations, Precision, Interferences (chemical), Determination of content, Combustion test methods, Testing conditions, Radioactivity, Safety measures
Download or read book Standard Methods for the Examination of Water and Wastewater written by American Public Health Association and published by . This book was released on 1981 with total page 1254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statistics for Censored Environmental Data Using Minitab and R written by Dennis R. Helsel and published by John Wiley & Sons. This book was released on 2012-02-01 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Praise for the First Edition " . . . an excellent addition to an upper-level undergraduate course on environmental statistics, and . . . a 'must-have' desk reference for environmental practitioners dealing with censored datasets." —Vadose Zone Journal Statistics for Censored Environmental Data Using Minitab® and R, Second Edition introduces and explains methods for analyzing and interpreting censored data in the environmental sciences. Adapting survival analysis techniques from other fields, the book translates well-established methods from other disciplines into new solutions for environmental studies. This new edition applies methods of survival analysis, including methods for interval-censored data to the interpretation of low-level contaminants in environmental sciences and occupational health. Now incorporating the freely available R software as well as Minitab® into the discussed analyses, the book features newly developed and updated material including: A new chapter on multivariate methods for censored data Use of interval-censored methods for treating true nondetects as lower than and separate from values between the detection and quantitation limits ("remarked data") A section on summing data with nondetects A newly written introduction that discusses invasive data, showing why substitution methods fail Expanded coverage of graphical methods for censored data The author writes in a style that focuses on applications rather than derivations, with chapters organized by key objectives such as computing intervals, comparing groups, and correlation. Examples accompany each procedure, utilizing real-world data that can be analyzed using the Minitab® and R software macros available on the book's related website, and extensive references direct readers to authoritative literature from the environmental sciences. Statistics for Censored Environmental Data Using Minitab® and R, Second Edition is an excellent book for courses on environmental statistics at the upper-undergraduate and graduate levels. The book also serves as a valuable reference for??environmental professionals, biologists, and ecologists who focus on the water sciences, air quality, and soil science.
Download or read book REM 2019 Proficiency Test on Gross Alpha beta Activity Concentration in Drinking Water written by and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A large scale Europe-wide proficiency test (sometimes referred to as REM2019 PT) on the determination of the gross alpha/beta activity concentration in drinking water was organised by JRC-Geel. The 154 participating environmental radioactivity monitoring laboratories were either nominated by their corresponding national authorities or invited by JRC to participate. One spiked water sample (JRC-GAB2) and a commercially available natural mineral water (JRC-GAB1) were selected as reference materials for this proficiency test after initial testing using nuclide-specific analyses and gross alpha/beta measurements. The JRC-GAB1 reference material (mineral water) had intermediate mineral content and gross activity above the parametric values defined in the E-DWD (Euratom Drinking Water Directive). The original mineral water was collected from a natural water source in France. Reference values were established in collaboration between the JRC-Geel and the Belgian Nuclear Research Centre (SCK CEN). The homogeneity, short-and long term stability of the batch of distributed PT reference materials were checked, their contribution to the uncertainty of the reference value was assessed. The assigned reference value for the spiked PT reference material was established by gravimetric spiking (often referred to as formulation by weighing). For the natural PT reference material, the assigned reference value for gross-alpha activity was established by radionuclide specific analysis whilst the gross-beta reference value was established by calculating the gross activity from several reference measurements using the power-moderated mean of the individual measurement results. For the homogeneity and short term stability study, three independent measurement methods were used: alpha-particle spectrometry (AS), liquid scintillation counting (LSC) and inductively coupled plasma-optical emission spectrometry (ICP-OES). The uncertainty of the reference values includes the uncertainty related to stability, between-bottle homogeneity and characterisation of PT reference samples. The performance of each participating laboratory was evaluated with respect to the reference value using relative deviations, z-score and zeta-score. Additionally, Youden plots and PomPlots were made to visualise reported data in comparison to the reference values. The reported results were evaluated and grouped by analytical methods to check for method dependency, accreditation, radionuclides used for efficiency calibration, time delay and if documented ISO standards were followed. It was found that the close to 50% of the gross activity results still deviate more than the standard deviation for proficiency assessment which was set to 30% for JRC-GAB1 sample and 20% for JRC-GAB2 sample, respectively. The general measurement performance is thus not satisfactory regardless of the methods used. This suggests that the existing analytical procedures and international standards need to be critically revised and harmonised for gross alpha/beta measurement in order to obtain more reliable and comparable measurement results. Furthermore, when the reported value with its uncertainty was evaluated using the zeta score, even fewer acceptable scores were found: 41% and 55% for gross alpha activity concentration; 38% and 62% for gross beta activity concentration in JRC-GAB1 and JRC-GAB2 PT reference materials, respectively. A key problem is that many variables influence and might interfere gross activity measurements. This makes it difficult to keep the analytical conditions under control and can lead to poor repeatability which affects accuracy as well. Therefore, it is of great importance to harmonise methods by fixing as many parameters as possible via true standardisation of the analytical methods. However, in certain cases the performance of methods using LSC and proportional counting techniques seems to be better than those based on solid state scintillation counters or other detectors. On the basis of the 14 best and most consistently performing participants (or methods), JRC is proposing "Best practices" to follow briefly in this report.
Download or read book Standard Test Method for Alpha And Beta Activity in Water By Liquid Scintillation Counting written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interpreting and Reporting Radiological Water quality Data written by David E. McCurdy and published by . This book was released on 2008 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Water supply Paper written by and published by . This book was released on 1965 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt:
