Worldwide Open Proficiency Test: Determination of ... - Nucleus - IAEA

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Draft, page ii EDITORIAL NOTE The use of particular designations of countries or territories does not imply any judgment by the publisher, the IAEA, as to the legal status of such countries or territories, of their authorities and institutions or of the delimitation of their boundaries. The mention of names of specific companies or products (whether or not indicated as registered) does not imply any intention to infringe proprietary rights, nor should it be construed as an endorsement or recommendation on the part of the IAEA.
FOREWORD A reliable determination of natural and artificial radionuclides in environmental samples is necessary to comply with the radiation protection and environmental regulations. The IAEA assists its Member States laboratories to maintain their readiness by producing reference materials, by developing standardized analytical methods, and by conducting interlaboratory comparisons and proficiency tests as tools for quality control. To fulfil this obligation and ensure a reliable worldwide, rapid and consistent response, the IAEA Terrestrial Environment Laboratory in Seibersdorf, Austria organises interlaboratory comparisons and proficiency tests. This summary report presents the results of the world-wide proficiency test IAEA-CU-2009- 03 on the determination of natural and artificial radionuclides in moss-soil and spiked water. Methodologies, data evaluation approach, summary evaluation of each nuclide and individual evaluation reports for each laboratory are also described. This proficiency test was designed to identify analytical problems, to support IAEA Member States laboratories to improve the quality of their analytical results, to maintain their accreditation and to provide a regular forum for discussion and technology transfer in this area. The number of samples, their matrix interferences and the concentration levels of the analytes were designed in a way to enable identification of potential analytical problems. In addition to the IAEA Terrestrial Environment Laboratory in Austria, two expert laboratories took part in the characterization campaign of the moss-soil reference material IAEA-447; namely: The Radiological Reference Laboratory of the Hungarian Agricultural Authority in Budapest, Hungary (S. Tarjan), The Institute of Jozef Stefan in Ljubljana, Slovenia (M. Korun). The IAEA is appreciative for the contribution of these institutes which was at no cost to the IAEA. The IAEA officer responsible for this publication was A. Shakhashiro of the IAEA Environment Laboratories. Final Darft, page i
Page 1: IAEA Analytical Quality in Nuclear
Page 5 and 6: 1. INTRODUCTION A reliable determin
Page 7 and 8: 2.1. Proficiency test objectives 2.
Page 9 and 10: To confirm the assigned target valu
Page 11 and 12: program achieving complete sample d
Page 13 and 14: 2.3.4.3. Determination of U-234, U-
Page 15 and 16: AlphaCounts per channel 2000 1500 1
Page 17 and 18: 3. PERFORMANCE CRITERIA Several rat
Page 19 and 20: acceptable”, a further check is a
Page 21 and 22: TABLE 4. SUMMARY EVALUATION OF ALL
Page 23 and 24: Lab. code Number of reported Scored
Page 29 and 30: 4.2. General recommendations and le
Page 31 and 32: Difference S2-S4 (%) Difference S2-
Page 33 and 34: 4.4. Recommendations related to the
Page 35 and 36: [Bq/kg] 70 60 50 40 30 20 10 0 Ra-2
Page 37 and 38: Figure 22: Part of the Thorium radi
Page 39 and 40: 5. CONCLUSIONS The IAEA-CU-2009-03
Page 41 and 42: REFERENCES [1] DUEWER, D.L., A Robu
Page 43 and 44: APPENDIX I: PERFORMANCE EVALUATION
Page 45 and 46: Lab code Rep. Value Rep. Unc. Unc.
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Lab code Rep. Value Rep. Unc. Unc.
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[Bq/kg] 650 575 500 425 350 275 200
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[Bq/kg] 650 600 550 500 450 400 350
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[ B q /k g ] 70 60 50 40 30 20 10 L
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[Bq] 50 45 40 35 30 25 20 15 10 120
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[Bq/kg] 60 50 40 30 20 10 0 25 223
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[ B q /k g ] 60 50 40 30 20 10 0 72
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[Bq/kg] 15 13 11 9 7 5 3 1 74 131 2
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[Bq/kg] 45 41 37 33 29 25 21 17 13
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[Bq/kg ] 19 17 15 13 11 9 7 5 3 286
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[Bq/kg] 19 17 15 13 11 9 7 5 3 1 25
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[ B q /k g ] 5.5 5 4.5 4 3.5 3 2.5
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[ B q /k g ] 3.5 3.0 2.5 2.0 1.5 1.
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[Bq /kg ] 8.5 7.5 6.5 5.5 4.5 3.5 2
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[Bq/kg] 7.5 6.5 5.5 4.5 3.5 2.5 1.5
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[B q /k g ] 13 11 9 7 5 3 1 515 26
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[Bq /kg ] 11 9 7 5 3 1 219 250 233
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[Bq/kg] 13 11 9 7 5 3 1 273 5264 26
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APPENDIX II: LIST OF PARTICIPATING
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Dr. Victor Badulin Public Exposure
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Dr. David Lobb Department of Soil S
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Petr Rulik Monitoring Department Na
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Mr. Benoit Daniel Eichrom Europe Ru
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Prof. Dr. Constantin Papastefanou A
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Mr. A.G. Hegde Health Physics Divis
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Mr. Mario Montalto Istituto Di Radi
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Mr. Samer J. Al-Kharouf Radiation P
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Ms. Snezana Dimovska Radioecology R
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Dr. Andrzej Komosa Department of Ra
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Ms. Ana-Maria Apostu Dept. of Life
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Mr. Peter Jovanovic Department of P
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Dr. Catalina Gasco Leonarte Ed. 3a
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Dra. Montserrat Llaurado Departamen
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Mr. Abdullah Dirican Turkish Atomic
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Dr. Paul Smedley Centre For Environ
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Mr. Kevin T. Claver Environmental A
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