Search

Your search keyword '"M. Llaurado"' showing total 7 results
Start Over Author "M. Llaurado" Topic 01 natural sciences
7 results on '"M. Llaurado"'

1. Strategy for the determination of mixtures of alpha and beta emitters in water samples with a combination of rapid methods

Author

J. Fons-Castells, M. Llaurado, and Joana Tent-Petrus

Subjects
medicine.medical_specialty, Radionuclide, Hydrogen compounds, Chemistry, Health, Toxicology and Mutagenesis, Public Health, Environmental and Occupational Health, Analytical chemistry, 010501 environmental sciences, 010403 inorganic & nuclear chemistry, 01 natural sciences, Pollution, 0104 chemical sciences, Analytical Chemistry, Alpha (programming language), Radioecology, Nuclear Energy and Engineering, Partial least squares regression, Drinking water directive, medicine, Radiology, Nuclear Medicine and imaging, Deconvolution, Radiochemical analysis, Biological system, Spectroscopy, 0105 earth and related environmental sciences
Abstract

Quantification of several alpha and beta emitters in mixtures of radionuclides arouses great interest in many fields such as surveillance around nuclear power plants, radioecology, accidental situations or drinking water control. Radiochemical separations are commonly used to deal with this issue. However, deconvolution methods for the analysis of LS spectra have been developed to avoid time-consuming radiochemical separations. The deconvolution procedure usually consists of the comparison of the spectrum that has to be analysed with a set of standard spectra. In order to obtain reliable results, the library of spectra used in the deconvolutions must fit with the analysed sample. For this reason, in order to determine all radionuclides included in the drinking water directive it has been established a strategy to select the radionuclides whose LS spectra must be included in the Partial least squares (PLS) model.

Published
2017

2. INTERNATIONAL STANDARDS ON FOOD AND ENVIRONMENTAL RADIOACTIVITY MEASUREMENT FOR RADIOLOGICAL PROTECTION: STATUS AND PERSPECTIVES

Author

Rolf Michel, M. Fournier, R. Ameon, S. Brun, A. Bombard, L. Thomas, Margarita Herranz, Takahiro Yamada, Simon Jerome, Maurizio Forte, D. Porterfield, S. Judge, Tetsuya Sanada, F. Byrde, A. Ratsirahonana, Shinji Tokonami, M. Llaurado, Martin Jiránek, S. B. Kim, D. Calmet, A. Husain, T. Haug, Jing Chen, P. Kwakman, J. Loyen, A. Tsapalov, A. Fronka, Ch. Schuler, A. Richards, Kateřina Rovenská, and J.-M. Duda

Subjects
education, Commission, Environment, 010501 environmental sciences, 01 natural sciences, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, Radiation Protection, 0302 clinical medicine, Environmental health, Humans, Radiology, Nuclear Medicine and imaging, International System of Units, 0105 earth and related environmental sciences, Accreditation, Radiation, Radiological and Ultrasound Technology, business.industry, Public Health, Environmental and Occupational Health, Environmental Exposure, General Medicine, Environmental exposure, Radiation Exposure, Reference Standards, Test (assessment), Engineering management, Radioactivity, Normative, Radiation protection, Laboratories, business, Working group
Abstract

Radiological protection is a matter of concern for members of the public and thus national authorities are more likely to trust the quality of radioactivity data provided by accredited laboratories using common standards. Normative approach based on international standards aims to ensure the accuracy or validity of the test result through calibrations and measurements traceable to the International System of Units. This approach guarantees that radioactivity test results on the same types of samples are comparable over time and space as well as between different testing laboratories. Today, testing laboratories involved in radioactivity measurement have a set of more than 150 international standards to help them perform their work. Most of them are published by the International Standardization Organization (ISO) and the International Electrotechnical Commission (IEC). This paper reviews the most essential ISO standards that give guidance to testing laboratories at different stages from sampling planning to the transmission of the test report to their customers, summarizes recent activities and achievements and present the perspectives on new standards under development by the ISO Working Groups dealing with radioactivity measurement in connection with radiological protection.

Published
2016

3. Certified reference materials for radionuclides in Bikini Atoll sediment (IAEA-410) and Pacific Ocean sediment (IAEA-412)

Author

E. Vasileva, Sandor Tarjan, Weijian Zhou, Herrmann J, M. K. Pham, J. Schikowski, C. Ilchmann, G. Kanisch, Yoshihiro Ikeuchi, Mikael Hult, Elena Chamizo, P. A. Smedley, Maria Suplińska, Rodolfo Gurriaran, G. Kis-Benedek, B. Varga, M. Llaurado, O. Hanley, Matthias Laubenstein, Fernando P. Carvalho, P. van Beek, Iolanda Osvath, D. Degering, U. Rieth, Tamara Zalewska, I. Sýkora, C. Gasco, Pavel P. Povinec, José Luis Mas, Sven Poul Nielsen, C. Engeler, M. Kloster, M. Nakano, and A. V. Harms

Subjects
Geologic Sediments, Certification, Atoll, 010501 environmental sciences, 010403 inorganic & nuclear chemistry, 01 natural sciences, Pacific ocean, Reference Values, Soil Pollutants, Radioactive, SDG 14 - Life Below Water, Radiometry, Marine sediment, 0105 earth and related environmental sciences, Radionuclides, Radioisotopes, geography, Radionuclide, Pacific Ocean, Radiation, geography.geographical_feature_category, Sediment, Quality control, Certified reference materials, Quality assurance, 0104 chemical sciences, Oceanography, Reference values, Environmental chemistry, Environmental science, Certified reference material, Micronesia, Staff training
Abstract

et al., The preparation and characterization of certified reference materials (CRMs) for radionuclide content in sediments collected offshore of Bikini Atoll (IAEA-410) and in the open northwest Pacific Ocean (IAEA-412) are described and the results of the certification process are presented. The certified radionuclides include: 40K, 210Pb (210Po), 226Ra, 228Ra, 228Th, 232Th, 234U, 238U, 239Pu, 239+240Pu and 241Am for IAEA-410 and 40K, 137Cs, 210Pb (210Po), 226Ra, 228Ra, 228Th, 232Th, 235U, 238U, 239Pu, 240Pu and 239+240Pu for IAEA-412. The CRMs can be used for quality assurance and quality control purposes in the analysis of radionuclides in sediments, for development and validation of analytical methods and for staff training.

Published
2016

4. International standardisation work on the measurement of radon in air and water

Author

T. Richards, Margarita Herranz, S. Jerome, M. Woods, M. Fournier, A. Bombard, P. Nardoux, P. de Jong, P. Kwakman, M. N. Bourquin, J. Loyen, A. Klett, Shinji Tokonami, D. Calmet, M. Llaurado, Ch. Schuler, R. Ameon, T. Beck, M. Forte, Rolf Michel, S. Brun, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Radioprotection et de Sûreté Nucléaire (IRSN), TrisKem International, ARPA Lombardia, Dipartimento Sub-Provinciale Città di Milano, Autorité de Sureté Nucléaire, National Institute for Public Health and the Environment [Bilthoven] (RIVM), Departament de Química Inorgnica, Universitat de Barcelona (UB), and National Institute of Radiological Sciences (NIRS)

Subjects
Water Pollutants, Radioactive, Standardization, [SDV]Life Sciences [q-bio], Air pollution, chemistry.chemical_element, Radon, 010501 environmental sciences, medicine.disease_cause, 01 natural sciences, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Radiation Monitoring, medicine, Humans, Dosimetry, Radiology, Nuclear Medicine and imaging, Environmental impact assessment, Environmental planning, Reliability (statistics), 0105 earth and related environmental sciences, Radiation, Radiological and Ultrasound Technology, Public Health, Environmental and Occupational Health, International Agencies, General Medicine, respiratory tract diseases, Work (electrical), chemistry, Air Pollutants, Radioactive, 13. Climate action, Environmental science, Radiation monitoring
Abstract

Radon is considered to be the main source of human exposure to natural radiation. As stated by the World Health Organization, the exposure due to the inhalation of indoor radon is much greater than the one via the ingestion of water as radon degasses from water during handling. In response to these concerns about the universal presence of radon, environmental assessment studies are regularly commissioned to assess the radon exposure of public and workers. The credibility of such studies relies on the quality and reliability of radon analysis as well as on the sample representativeness of the radiological situation. The standard-setting approach, based on consensus, seemed to lend itself to a settlement of technical aspects of potential comparison. At present, two Working Groups of the International Standardization Organization are focussing on drafting standards on radon and its decay products measurement in air and water. These standards, which aim for a set of rigorous metrology practices, will be useful for persons in charge of the initial characterisation of a site with respect to natural radioactivity as well as to those performing the routine surveillance of specific sites. © The Author 2011. Published by Oxford University Press. All rights reserved.

Published
2011

5. ISO standards on test methods for water radioactivity monitoring

Author

M. Llaurado, P. Kwakman, Shinji Tokonami, Simon Jerome, D. Calmet, R. Ameon, Margarita Herranz, M. Fournier, A. Bombard, Maurizio Forte, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China [Hefei] (USTC), Institut de Radioprotection et de Sûreté Nucléaire (IRSN), TrisKem International, ARPA Lombardia, Dipartimento Sub-Provinciale Città di Milano, Departamento Fisica Aplicada I, Escuela Superior de Ingenieros, Alda. Urquijo s/n, 48013 Bilbao, Spain, National Institute for Public Health and the Environment [Bilthoven] (RIVM), Departament de Química Inorgnica, Universitat de Barcelona (UB), Hirosaki University, and Universitat de Barcelona

Subjects
Engineering, Water Pollutants, Radioactive, Internationality, [SDV]Life Sciences [q-bio], Iso standards, Guidelines as Topic, Normes ISO, 010501 environmental sciences, 01 natural sciences, World health, 030218 nuclear medicine & medical imaging, Transport engineering, 03 medical and health sciences, 0302 clinical medicine, Radiation Monitoring, Radioactivitat, Drinking water, ISO Standards, 0105 earth and related environmental sciences, Radiation, business.industry, Drinking Water, Water, Accidents nuclears, Aigua potable, 6. Clean water, 3. Good health, Test (assessment), Aigua, Radioactivity, Nuclear accidents, Guideline Adherence, International standardization, business
Abstract

International audience; Water is vital to humans and each of us needs at least 1.5. L of safe water a day to drink. Beginning as long ago as 1958 the World Health Organization (WHO) has published guidelines to help ensure water is safe to drink. Focused from the start on monitoring radionuclides in water, and continually cooperating with WHO, the International Standardization Organization (ISO) has been publishing standards on radioactivity test methods since 1978. As reliable, comparable and 'fit for purpose' results are an essential requirement for any public health decision based on radioactivity measurements, international standards of tested and validated radionuclide test methods are an important tool for production of such measurements.This paper presents the ISO standards already published that could be used as normative references by testing laboratories in charge of radioactivity monitoring of drinking water as well as those currently under drafting and the prospect of standardized fast test methods in response to a nuclear accident. © 2013 Elsevier Ltd.

Published
2012

6. A new reference material for radionuclides in the mussel sample from the Mediterranean Sea (IAEA-437)

Author

Zsolt Varga, E. C. Calvo, M. Kloster, M. K. Pham, A. Nourredine, F. Legarda, J. Schikowski, Joan-Albert Sanchez-Cabeza, M. Pellicciari, Matthias Köhler, Mikael Hult, M. Takeishi, G. Kanisch, Elis Holm, M. Llaurado, M. Betti, J. La Rosa, Hervé Thébault, U. Rieth, M. Benmansour, Pavel P. Povinec, C. Ilchmann, H. Satake, A. M. Rodriguez y Baena, P. Bouisset, R. Bojanowski, J.-S. Oh, G. J. Ham, Marine Environment Laboratories [Monaco] (IAEA-MEL), International Atomic Energy Agency [Vienna] (IAEA), Comenius University in Bratislava, Faculty of Mathematics, Physics and Informatics, Bratislava, Slovakia, CNESTEN, Centre National de l'Energie, des Sciences et des Techniques Nucléaires, PRP-ENV/STEME/LMRE, Laboratoire de Mesure de la Radioactivité dans l’Environnement, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Centro Nacional de Aceleradores, Sevilla, Spain, Centro Nacional de Aceleradores, Centre for Radiation, Chemical and Environmental Hazards, Public Health England [London], Lund University and Lund University Hospital, JRC Institute for Reference Materials and Measurements [Geel] (IRMM), European Commission - Joint Research Centre [Geel] (JRC), Johann Heinrich von Thünen Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries, Institute of Sea Fisheries, National Institute of Standards and Technology [Gaithersburg] (NIST), Universidad del Pais Vasco / Euskal Herriko Unibertsitatea [Espagne] (UPV/EHU), Centre de Recherche Nucléaire d'Alger (CRNA), COMENA, National Oceanography Centre [Southampton] (NOC), University of Southampton, Università dell’Insubria, The Mediterranean Science Commission (CIESM), Japan Nuclear Cycle Development Institute, Laboratoire d'étude radioécologique du milieu continental et marin (LERCM), Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Direction de l'Environnement et de l'Intervention, Institute of Isotopes (II), and Hungarian Academy of Sciences (MTA)

Subjects
uranium 238, Health, Toxicology and Mutagenesis, uranium 234, [SDV]Life Sciences [q-bio], uranium 235, 010501 environmental sciences, 01 natural sciences, water quality, plutonium 240, Analytical Chemistry, thorium 232, Mediterranean sea, thorium 230, americium 241, Spectroscopy, article, Pollution, Environmental chemistry, laboratory test, radioactivity, Strontium-90, strontium 90, chemistry.chemical_element, Radon, lead 210, 010403 inorganic & nuclear chemistry, radium 226, Plutonium-240, radium 228, Mediterranean Sea, Radiology, Nuclear Medicine and imaging, 14. Life underwater, radioisotope, quality control, potassium 40, 0105 earth and related environmental sciences, Radionuclide, nonhuman, cesium 137, Public Health, Environmental and Occupational Health, Mussel, 0104 chemical sciences, Nuclear Energy and Engineering, chemistry, Mytilus galloprovincialis, plutonium 239, plutonium 238, Environmental science, Water quality, iodine 129, polonium, Plutonium-238
Abstract

A new Reference Material (RM) for radionuclides in mussel (Mytilus galloprovincialis) from the Mediterranean Sea (IAEA-437) is described and the results of the certification process are presented. Four radionuclides ( 40K, 234U, 238U, and 239+240Pu) have been certified, and information values on massic activities with 95% confidence intervals are given for nine radionuclides (137Cs, 210Pb(210Po), 226Ra, 228Ra, 228Th, 230Th, 232Th, 235U, and 241Am). Results for less frequently reported radionuclides ( 90Sr, 129I, 238Pu, 239Pu, and 240Pu) are also reported. The RM can be used for quality assurance/quality control of the analysis of radionuclides in mussel samples, for the development and validation of analytical methods and for training purposes. The material is available in 200 g units.

Published
2010

7. A new Certified Reference Material for radionuclides in Irish sea sediment (IAEA-385)

Author

G. Kis-Benedek, Elis Holm, M. Llaurado, Gordana Vitorović, J. Palomares, Janine Gastaud, S. Nour, A. V. Jenkinson, D. Woodhead, H. Michel, Eric Wyse, Tarja K. Ikäheimonen, Joan-Albert Sanchez-Cabeza, M. Benmansour, F. Legarda, J. Schikowski, Dirk Arnold, Istvan Bikit, P. R. Povinec, V. Koukouliou, A. Gudelis, F. J. Fouche, G. LePetit, R. Pilvio, J. Pfitzner, B. Oregioni, Gary Hancock, J.J. Larosa, I. Levy-Palomo, K. Andor, H. Satake, B. Michalik, Gordana K. Pantelić, L. Puskeiler, K. Dimitrova, Fernando P. Carvalho, Hartmut Nies, Jordi Garcia-Orellana, M. K. Pham, Z. H. Edrev, M. Meyer, C. Gasco, Ross I. Kleinschmidt, C. Engeler, Sang-Han Lee, G. Kanisch, J.-S. Oh, L. Liong Wee Kwong, B. Kuhar, C. Ilchmann, F. J. Maringer, Marine Environment Laboratories [Monaco] (IAEA-MEL), International Atomic Energy Agency [Vienna] (IAEA), Physikalisch-Technische Bundesanstalt [Braunschweig] (PTB), CNESTEN, Centre National de l'Energie, des Sciences et des Techniques Nucléaires, University of Novi Sad, Instituto Tecnológico e Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), RIZA Institute for Inland Water Management and Waste Water Treatment, South African Nuclear Energy Corporation [Pretoria] (NECSA), Universitat Autònoma de Barcelona (UAB), CSIRO Land and Water, Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), University Hospital of Lund, Universidad del Pais Vasco / Euskal Herriko Unibertsitatea [Espagne] (UPV/EHU), Radiation and Nuclear Safety Authority Department of Research and Environmental Surveillance (STUK), STUK, Johann Heinrich von Thünen Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries, Institute of Sea Fisheries, Queensland Health Forensic and Scientific Services, Greek Atomic Energy Commission (EEAE), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Departament de Química Inorgnica, Universitat de Barcelona (UB), Austrian Research Centre Seibersdorf, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), National Oceanography Centre [Southampton] (NOC), University of Southampton, Australian Institute of Marine Science [Townsville] (AIMS Townsville), Australian Institute of Marine Science (AIMS), Faculty of Veterinary Medicine [Belgrade, Serbie], University of Belgrade [Belgrade], Centre for Environment, Fisheries and Aquaculture Science [Lowestoft] (CEFAS), Departament de Fisica, Universitat Autonoma de Barcelona, Greek Atomic Energy Commission, and Université Nice Sophia Antipolis (... - 2019) (UNS)

Subjects
uranium 238, Geologic Sediments, cobalt 60, certification, uranium 234, uranium 235, Certification, Natural radionuclides, technetium 99m, 010501 environmental sciences, 01 natural sciences, plutonium 240, europium 155, plutonium 241, thorium 232, thorium 230, americium 241, Reference Values, analytic method, environmental radioactivity, Radiation, article, radon 224, Mass activity, Quality assurance, unclassified drug, Certified reference materials, priority journal, Environmental chemistry, Practice Guidelines as Topic, sea, Oceans and Seas, strontium 90, Irish Sea, lead 210, 010403 inorganic & nuclear chemistry, Radiation Dosage, Sediments, radium 226, Radiation Monitoring, radium 228, 14. Life underwater, quality control, potassium 40, 0105 earth and related environmental sciences, neptunium 239, Radioisotopes, Radionuclide, radioactive material, cesium 137, business.industry, Anthropogenic radionuclides, cesium 134, Sediment, Irish sea, 0104 chemical sciences, sediment, plutonium 239, validation process, [SDU]Sciences of the Universe [physics], Reference values, plutonium 238, mass, business, polonium, Ireland
Abstract

A new Certified Reference Material (CRM) for radionuclides in sediment (IAEA-385) is described and the results of the certification process are presented. Eleven radionuclides ((40)K, (137)Cs, (226)Ra, (228)Ra, (230)Th, (232)Th, (234)U, (238)U, (238)Pu, (239+240)Pu and (241)Am) have been certified and information mass activities with 95% confidence intervals are given for seven other radionuclides ((90)Sr, (210)Pb((210)Po), (235)U, (239)Pu, (240)Pu and (241)Pu). Results for less frequently reported radionuclides ((60)Co, (99)Tc, (134)Cs, (155)Eu, (224)Ra and (239)Np) and information on some activity and mass ratios are also reported. The CRM can be used for quality assurance/quality control of the analysis of radionuclides in sediment samples, for the development and validation of analytical methods and for training purposes.

Published
2007

Catalog

Books, media, physical & digital resources
See catalog results