HELCOM-MORS proficiency test on the determination of radionuclides in fish flesh sample IAEA-414. Laboratory No 1, Federal Maritime and Hydrographic Agency, Hamburg, Germany. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%)
Rel. Bias (%) z- Score u- Test Ratio Lab/IAEA
A1 A2 Trueness P(%)Precision Final Score 40K 481 16 425 4 0.9 11.64 -1.16 3.40 0.88 56 42.6Failed 3.5 Passed Warning 137Cs 5.18 0.10 5.25 0.17 3.2 -1.35 0.14 -0.35 1.01 -0.07 0.51 Passed 3.8 Passed Acceptable 241Am 0.197 0.011 0.7 0.2 28.6 -255 25.53 -2.51 3.55 -0.5 0.52Passed 29.1 Failed Not Acceptable Note: This laboratory reported two values of 241 Am, one is under the LLD. The “Lab. Values” of 40 K and 137 Cs in the table are the mean values of two reported individual determinations.
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HELCOM-MORS proficiency test on the determination of radionuclides in fish flesh sample IAEA-414. Laboratory No 2, STUK- Radiation and Nuclear Safety Authority, Helsinki, Finland. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%)
Rel. Bias (%)
z- Score
u- Test Ratio Lab/IAEA
A1 A2 Trueness P(%) Precision Final Score 40K 481 16 490 53 10.8 -1.87 0.19 -0.16 1.02 9 143 Passed 11.3 Passed Acceptable 137Cs 5.18 0.10 5.42 0.72 13.3 -4.63 0.46 -0.33 1.05 -0.24 1.88 Passed 13.4 Passed Acceptable 234U1.22 0.11 1.21 0.21 17.4 0.82 -0.08 0.04 0.99 0.01 0.61 Passed 19.6 Passed Acceptable 238 U1.11 0.08 1.03 0.16 15.5 7.21 -0.72 0.45 0.93 0.08 0.46 Passed 17.1 Passed Acceptable 238Pu0.023 0.003 0.0205 0.0089 43.4 10.9 -1.09 0.27 0.89 0.0025 0.02 Passed 45.2 Failed Warning 239+240 Pu0.120 0.007 0.120 0.025 20.8 0.00 0.00 0.00 1.00 0 0.07 Passed 21.6 Passed Acceptable 241Am 0.197 0.011 0.318 0.183 57.5 -61.4 6.14 -0.66 1.61 -0.121 0.47 Passed 57.8 Failed Not Acceptable Note: The “Lab. Values” of all radionuclides in the table are the mean values of two reported individual analyses.
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HELCOM-MORS proficiency test on the determination of radionuclides in fish flesh sample IAEA-414. Laboratory No 3, Estonian Radiation Protection Centre, Tallinn, Estonia. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%)
Rel. Bias (%) z- Score u- Test Ratio Lab/IAEA
A1 A2 Trueness P(%)Precision Final Score 40K 481 16 467.5 47.7 10.2 2.81 -0.28 0.27 0.97 13.5 129.8 Passed 10.7 Passed Acceptable 137 Cs 5.18 0.10 6.5 1.5 23.1 -25.48 2.55 -0.88 1.25 -1.32 3.88 Passed 23.2 Failed Not Acceptable Note: The “Lab. Values” of 40 K and 137 Cs in the table are the mean values of two reported individual analyses.
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HELCOM-MORS proficiency test on the determination of radionuclides in fish flesh sample IAEA-414. Laboratory No 4, Institute of Meteorology and Water Management, Maritime Branch, Gdynia, Poland. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%) Rel. Bias (%) z- Score u- Test Ratio Lab/IAEA
A1 A2 Trueness P(%)Precision Final Score 40K 481 16 474.5 19.3 4.1 1.35 -0.14 0.26 0.99 6.5 64.68 Passed 5.2 Passed Acceptable 137Cs 5.18 0.10 5.06 0.64 12.6 2.32 -0.23 0.19 0.98 0.12 1.67 Passed 12.8 Passed Acceptable Note: The “Lab. Values” of 40 K and 137 Cs in the table are the mean values of three and six reported individual analyses, respectively.
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HELCOM-MORS PROFICIENCY TEST ON THE DETERMINATION OF RADIONUCLIDES IN FISH FLESH SAMPLE IAEA-414. Laboratory No 5, Central Laboratory for Radiological Protection, Warsaw, Poland. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%) Rel. Bias (%) z- Score u- Test Ratio Lab/IAEA
A1 A2 Trueness P(%)Precision Final Score 40 K 481 16 517 14 2.8 -7.59 0.76 -1.70 1.08 36.5 55.5 Passed 4.3 Passed Acceptable 137Cs 5.18 0.10 5.15 0.20 3.9 0.58 -0.06 0.13 0.99 0.03 0.58 Passed 4.3 Passed Acceptable 238Pu0.023 0.003 0.023 0.003 13.0 0.00 0.00 0.00 1.00 0 0.01 Passed 18.1 Passed Acceptable 239+240Pu0.120 0.007 0.140 0.008 5.7 -16.67 1.67 -1.88 1.17 -0.02 0.03 Passed 8.2 Passed Acceptable Note: The “Lab. Values” of 40 K, 137 Cs, 238 Pu and 239+240 Pu in the table are the mean values of two reported individual analyses.
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HELCOM-MORS PROFICIENCY TEST ON THE DETERMINATION OF RADIONUCLIDES IN FISH FLESH SAMPLE IAEA-414. Laboratory No 6, Institute of Fishery Ecology, Hamburg, Germany. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%)
Rel. Bias (%)
z- Score
u- Test Ratio Lab/IAEA
A1 A2 Trueness P (%)Precision Final Score 40 K 481 16 462 15 3.2 3.95 -0.40 0.87 0.96 19 56.6 Passed 4.6 Passed Acceptable 137Cs 5.18 0.10 5.36 0.21 3.9 -3.47 0.35 -0.77 1.03 -0.18 0.60 Passed 4.4 Passed Acceptable 232Th0.028 0.006 0.0274 0.0056 20.4 2.14 -0.21 0.07 0.98 0.0006 0.02 Passed 23.1 Passed Acceptable 234U1.22 0.11 1.195 0.069 5.8 2.05 -0.20 0.19 0.98 0.025 0.34 Passed 10.7 Passed Acceptable 235U0.05 0.01 0.049 0.006 11.6 1.40 -0.14 0.06 0.99 0.0007 0.03 Passed 11.6 Passed Acceptable 238U1.11 0.08 1.125 0.093 8.3 -1.35 0.14 -0.12 1.01 -0.015 0.32 Passed 11 Passed Acceptable 238Pu0.023 0.003 0.0219 0.0039 17.8 4.78 -0.48 0.23 0.95 0.0011 0.01 Passed 21.8 Passed Acceptable 239+240Pu0.120 0.007 0.1165 0.0097 8.3 2.92 -0.29 0.29 0.97 0.0035 0.03 Passed 10.2 Passed Acceptable 241Am 0.197 0.011 0.199 0.019 9.5 -1.02 0.10 -0.09 1.01 -0.002 0.06 Passed 11.1 Passed Acceptable Note: The “Lab. Values” of 40 K and 137 Cs are the mean values of six reported individual analyses. The “Lab. Values” for all other radionuclides are the mean values of two reported individual analyses.
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HELCOM-MORS PROFICIENCY TEST ON THE DETERMINATION OF RADIONUCLIDES IN FISH FLESH SAMPLE IAEA-414. Laboratory No 7, Riso National Laboratory, Roskilde, Denmark. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%)
Rel. Bias (%)
z- Score
u- Test Ratio Lab/IAEA
A1 A2 Trueness P (%)Precision Final Score 40 K 481 16 502 50 10.0 -4.37 0.44 -0.40 1.04 21 135.4 Passed 10.5 Passed Acceptable 137Cs 5.18 0.10 5.02 0.43 8.6 3.09 -0.31 0.36 0.97 0.16 1.14 Passed 8.8 Passed Acceptable 232Th0.028 0.006 0.029 0.0029 10.0 -3.57 0.36 -0.15 1.04 -0.001 0.02 Passed 23.6 Passed Acceptable 234U1.22 0.11 1.25 0.13 10.4 -2.46 0.25 -0.18 1.02 -0.03 0.44 Passed 13.8 Passed Acceptable 235U0.05 0.01 0.0444 0.0044 9.9 11.20 -1.12 0.51 0.89 0.0056 0.03 Passed 9.9 Passed Acceptable 238U1.11 0.08 1.16 0.12 10.3 -4.50 0.45 -0.35 1.05 -0.05 0.37 Passed 12.6 Passed Acceptable 238Pu0.023 0.003 0.0215 0.0024 11.2 6.52 -0.65 0.40 0.93 0.0015 0.01 Passed 16.8 Passed Acceptable 239+240Pu0.120 0.007 0.125 0.012 9.6 -4.17 0.42 -0.36 1.04 -0.005 0.04 Passed 11.2 Passed Acceptable 241Am 0.197 0.011 0.204 0.02 9.8 -3.55 0.36 -0.31 1.04 -0.007 0.06 Passed 11.3 Passed Acceptable Note: The “Lab. Values” of all radionuclides in the table are the mean values of four to six reported individual analyses.
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HELCOM-MORS PROFICIENCY TEST ON THE DETERMINATION OF RADIONUCLIDES IN FISH FLESH SAMPLE IAEA-414. Laboratory No 8, Radiology Division, Environmental Research Department, Vilnius, Lithuania. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%)
Rel. Bias (%)
z- Score
u- Test Ratio Lab/IAEA
A1 A2 Trueness P (%)Precision Final Score 40 K 481 16 438 36 8.2 8.94 -0.89 1.09 0.91 43 101.6 Passed 8.9 Passed Acceptable 137Cs 5.18 0.10 5.28 1.13 8.6 3.09 -0.31 0.36 0.97 0.16 1.14 Passed 8.8 Passed Acceptable Note: The “Lab. Values” of all radionuclides in the table are the mean values of two reported individual analysis.
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HELCOM-MORS PROFICIENCY TEST ON THE DETERMINATION OF RADIONUCLIDES IN FISH FLESH SAMPLE IAEA-414. Laboratory No 9, V.G. Khlopin Radium Institute, Saint-Petersburg, Russia. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%)
Rel. Bias (%)
z- Score
u- Test Ratio Lab/IAEA
A1 A2 Trueness P (%)Precision Final Score 40 K 481 16 513 35 6.8 -6.65 0.67 -0.83 1.07 32 99.3 Passed 7.6 Passed Acceptable 137Cs 5.18 0.10 5.78 0.65 11.1 -13.32 1.33 -1.05 1.13 -0.69 1.70 Passed 11.2 Passed Acceptable Note: The “Lab. Values” of all radionuclides in the table are the mean values of two reported individual analyses.
51
HELCOM-MORS PROFICIENCY TEST ON THE DETERMINATION OF RADIONUCLIDES IN FISH FLESH SAMPLE IAEA-414. Laboratory No 10, Swedish Radiation Safety Authority, Sweden. Reference Date: 01 January 1997 Analyte IAEA Value [Bq kg-1 d.w.]
IAEA Unc. [Bq kg-1 d.w.]
Lab. Value [Bq kg-1 d.w.]
Lab. Unc. [Bq kg-1 d.w.]
Lab. Unc. (%)
Rel. Bias (%)
z- Score
u- Test Ratio Lab/IAEA
A1 A2 Trueness P (%)Precision Final Score 137 Cs 5.18 0.10 5.23 0.68 13 -0.97 0.10 -0.07 1.01 -0.05 1.77 Passed 13.1 Passed Acceptable Note: The “Lab. Value” of137 Cs in the table is the mean value of nine reported individual analysis.
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REFERENCES
[1] SANCHEZ-CABEZA, J.-A., PHAM, M.K, POVINEC P.P., IAEA programme on the quality of marine radioactivity data, J. Environ. Rad. 99 (2008) 1680-1686.
[2] POVINEC, P.P., PHAM, M.K., IAEA reference materials for quality assurance of marine radioactivity measurements. J. Radioanal. Nucl. Chem. 248 (1), (2001) 211-216.
[3] PHAM M.K., LA RORA J., LEE S.-H., POVINEC P.P.“Report on the worldwide intercomparison IAEA-414, Radionuclides in mixed fish from Irish Sea and North Sea”, IAEA/AL/145, IAEA/MEL/73, IAEA, Monaco, (2004) 81p.
[4] PHAM M.K., SANCHEZ-CABEZA J.-A., POVINEC P.P et al. Certified reference material for radionuclides in fish flesh sample IAEA-414 (mixed fish from the Irish sea and North sea). Appl. Radiat. Isotopes 64, (2006) 1253-1259.
[5] SHAKHASHIRO A., SANSONE U., TRINKL A., MAKAREWICZ M., YONEZAWA C., KIM C.K., KIS-BENEDEK G., BENESCH T., SCHORN R. Report on the IAEA-CU-2006-04 ALMERA, Proficiency Test on the Determination of Gamma Emitting radionuclides. IAEA/AL/170, Seibersdorf, (2007) 74p.
[6] SHAKHASHIRO, A., FAJGELJ, A., SANSONE, U., Comparison of Different Approaches To Evaluate Proficiency Test Data, Presented and accepted in the publications of the International Workshop on Combining and Reporting Analytical Results. The Role of (metrological) Traceability and (measurement) Uncertainty for Comparing Analytical Results, Rome 6-8 March, 2006.
[7] BROOKES, C.J., BETTELEY, I.G., LOXTON, S.M., Fundamentals of Mathematics and Statistics, Wiley 1979.
[8] ISO, Proficiency Testing and Interlaboratory Comparisons, Guide 43, ISO/IEC, Geneva (1997).
[9] International Standard Organization (ISO) Guide to the expression of uncertainty in measurement. ISO, Geneva (1993).
[10] TAYLOR, B.N. and KUYATT, C.E. Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement results; NIST Technical Note 1297, Washington DC (1994), 20p.
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LIST OF PARTICIPATING LABORATORIES