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

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[Bq/kg] 4.6 4.1 3.6 3.1 2.6 2.1 1.6 1.1 0.6 0.1 Lab code 185 96 Draft, page 108 110 125 Rep. Value 297 91 Performance evaluation <strong>of</strong> Am-241 measurement results 163 56 Rep. Unc. 156 251 <strong>IAEA</strong>-447 Moss-soil reference material 159 261 26 Unc. [%] Target Value: 2.2 ± 0.2 [Bq/kg] Radiochemical methods N 38% W 7% A 55% Am-241 in moss-soil (RC) 106 276 175 122 Rel. Bias 264 120 76 114 55 210 Laboratory code 259 41 39 95 119 94 59 111 177 77 272 130 21 A1 A2 True P Prec 267 74 118 64 71 207 21 2.52 0.4 15.87 20.00 0.4 1.2 A 18.5 A A 26 1.26 0.27 21.43 -40.00 0.8 0.9 A 23.4 A A 39 2.1 0.2 9.52 0.00 0.0 0.7 A 13.5 A A 41 2.1 0.1 4.76 0.00 0.0 0.6 A 10.6 A A 55 1.97 0.13 6.60 -6.19 0.1 0.6 A 11.6 A A 56 1.02 0.083 8.14 -51.43 1.1 0.6 N 12.5 A N 59 2.4 0.5 20.83 14.29 0.3 1.4 A 22.9 A A 64 3.17 0.63 19.87 50.95 1.1 1.7 A 22.0 A A Final Score
Lab code Rep. Value Rep. Unc. Unc. [%] Rel. Bias A1 A2 True P Prec Final Score 71 2.8 0.3 10.71 33.33 0.7 0.9 A 14.3 A A 74 4.2 0.4 9.52 100.00 2.1 1.2 N 13.5 A N 76 2.02 0.25 12.38 -3.81 0.1 0.8 A 15.6 A A 77 2.487 0.222 8.93 18.43 0.4 0.8 A 13.1 A A 91 0.89 0.17 19.10 -57.62 1.2 0.7 N 21.3 A N 94 2.2 0.8 36.36 4.76 0.1 2.1 A 37.6 N W 95 2.06 0.28 13.59 -1.90 0.0 0.9 A 16.6 A A 96 0.18 0.03 16.67 -91.43 1.9 0.5 N 19.2 A N 106 1.57 0.3 19.11 -25.24 0.5 0.9 A 21.4 A A 110 0.645 0.0287 4.45 -69.29 1.5 0.5 N 10.5 A N 111 2.24 0.09 4.02 6.67 0.1 0.6 A 10.3 A A 114 2 1 50.00 -4.76 0.1 2.6 A 50.9 N W 118 3.55 0.36 10.14 69.05 1.5 1.1 N 13.9 A N 119 2.22 0.52 23.42 5.71 0.1 1.4 A 25.3 A A 120 1.8 0.4 22.22 -14.29 0.3 1.2 A 24.2 A A 122 1.75 0.12 6.86 -16.67 0.4 0.6 A 11.7 A A 125 0.6 0.5 83.33 -71.43 1.5 1.4 N 83.9 N N 130 2.53 0.25 9.88 20.48 0.4 0.8 A 13.7 A A 156 1.23 0.139 11.30 -41.43 0.9 0.6 N 14.8 A N 159 1.5 0.1 6.67 -28.57 0.6 0.6 N 11.6 A N 163 1.05 0.34 32.38 -50.00 1.1 1.0 N 33.8 N N 175 1.77 0.052 2.94 -15.71 0.3 0.5 A 10.0 A A 177 2.5 0.21 8.40 19.05 0.4 0.7 A 12.7 A A 185 0.21 0.04 19.05 -90.00 1.9 0.5 N 21.3 A N 207 2.79 0.18 6.45 32.86 0.7 0.7 A 11.5 A A 210 1.92 0.13 6.77 -8.57 0.2 0.6 A 11.7 A A 251 1.2 0.1 8.33 -42.86 0.9 0.6 N 12.7 A N 259 2.19 0.1535 7.00 4.41 0.1 0.7 A 11.8 A A 261 1.4 0.16 11.43 -33.33 0.7 0.7 N 14.9 A N 264 1.81 0.749 41.38 -13.81 0.3 2.0 A 42.5 N W 267 29.5 12 40.68 1304.7 27.4 31.0 A 41.8 N N 272 2.44 0.19 7.79 16.19 6 0.3 0.7 A 12.3 A A 276 1.5 0.7 46.67 -28.57 0.6 1.9 A 47.6 N N 297 0.99 0.12 12.12 -52.86 1.1 0.6 N 15.4 A N
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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 59 and 60: 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 109: 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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