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

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[Bq/kg] 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 Draft, page 110 Performance evaluation <strong>of</strong> Pu-238 measurement results <strong>IAEA</strong>-447 Moss-soil reference material Target Value: 0.15 ± 0.015 [Bq/kg] N 52% W 4% A 44% Pu-238 in moss-soil 151 150 152 32 252 91 30 260 141 263 297 122 251 125 63 259 276 264 272 130 261 5 64 163 156 265 143 185 114 76 212 111 232 55 41 39 21 81 274 191 207 7 95 175 77 70 52 8 10 177 210 110 Lab code Rep. Value Rep. Unc. Unc. [%] Rel. Bias Laboratory code A1 A2 True P Prec 5 0.29 0.18 62.07 93 0.14 0.47 A 62.9 N N 7 0.14 0.02 14.29 -6.67 0.01 0.06 A 17.4 A A 8 0.12 0.04 33.33 -20.00 0.03 0.11 A 34.8 A A 10 0.118 0.02 16.95 -21.33 0.03 0.06 A 19.7 A A 21 0.15 0.022 14.67 0.00 0.00 0.07 A 17.8 A A 30 3.4 0.4 11.76 2166 3.25 1.03 N 15.4 A N 32 27.5 1 3.64 18233 27.35 2.58 N 10.6 A N 39 0.15 0.03 20.00 0.00 0.00 0.09 A 22.4 A A 41 0.15 0.01 6.67 0.00 0.00 0.05 A 12.0 A A 52 0.12 0.02 16.67 -20.00 0.03 0.06 A 19.4 A A 55 0.155 0.039 25.16 3.33 0.01 0.11 A 27.1 A A 63 0.512 0.161 31.45 241 0.36 0.42 A 33.0 A A Final Score
Lab code Rep. Value Rep. Unc. Unc. [%] Rel. Bias A1 A2 True P Prec Final Score 64 0.27 0.09 33.33 80.00 0.12 0.24 A 34.8 A A 70 0.12 0.03 25.00 -20.00 0.03 0.09 A 26.9 A A 76 0.166 0.05 30.12 10.67 0.02 0.13 A 31.7 A A 77 0.13 0.021 16.15 -13.33 0.02 0.07 A 19.0 A A 81 0.149 0.031 20.81 -0.67 0.00 0.09 A 23.1 A A 91 3.7 0.4 10.81 2366 3.55 1.03 N 14.7 A N 95 0.134 0.048 35.82 -10.67 0.02 0.13 A 37.2 N W 96
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IAEA Analytical Quality in Nuclear
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FOREWORD A reliable determination o
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1. INTRODUCTION A reliable determin
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2.1. Proficiency test objectives 2.
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To confirm the assigned target valu
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program achieving complete sample d
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2.3.4.3. Determination of U-234, U-
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AlphaCounts per channel 2000 1500 1
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3. PERFORMANCE CRITERIA Several rat
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acceptable”, a further check is a
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TABLE 4. SUMMARY EVALUATION OF ALL
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Lab. code Number of reported Scored
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4.2. General recommendations and le
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Difference S2-S4 (%) Difference S2-
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4.4. Recommendations related to the
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[Bq/kg] 70 60 50 40 30 20 10 0 Ra-2
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Figure 22: Part of the Thorium radi
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5. CONCLUSIONS The IAEA-CU-2009-03
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REFERENCES [1] DUEWER, D.L., A Robu
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APPENDIX I: PERFORMANCE EVALUATION
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Lab code Rep. Value Rep. Unc. Unc.
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Page 61 and 62: Lab code Rep. Value Rep. Unc. Unc.
Page 67 and 68: [Bq/kg] 650 575 500 425 350 275 200
Page 69 and 70: [Bq/kg] 650 600 550 500 450 400 350
Page 71 and 72: [ B q /k g ] 70 60 50 40 30 20 10 L
Page 93 and 94: [Bq] 50 45 40 35 30 25 20 15 10 120
Page 95 and 96: [Bq/kg] 60 50 40 30 20 10 0 25 223
Page 101 and 102: [ B q /k g ] 60 50 40 30 20 10 0 72
Page 111: Lab code Rep. Value Rep. Unc. Unc.
Page 117 and 118: [Bq/kg] 15 13 11 9 7 5 3 1 74 131 2
Page 123 and 124: [Bq/kg] 45 41 37 33 29 25 21 17 13
Page 139 and 140: [Bq/kg ] 19 17 15 13 11 9 7 5 3 286
Page 153 and 154: [Bq/kg] 19 17 15 13 11 9 7 5 3 1 25
Page 159 and 160: [ 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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259
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