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Interlaboratory Studies

Interlaboratory Comparisons and Proficiency Tests

This page details all interlaboratory comparisons (ILCs) and proficiency tests (PTs) organized by the IAEA Terrestrial Environment Laboratory.

[Enter to the Proficiency Test Reporting Platform]

How to Apply for Proficiency Test Exercises;  
In order to participate in announced proficiency test exercises and to report your results, you need to apply for an account for access to the Proficiency Test Reporting Platform. Please download, complete and return the pdf-form to Proficiency-Tests.Contact-Point@iaea.org Your user login details will be sent to you by e-mail. Please keep your  login details for any future exercises as they will remain the same.


[Download the application form here]

Current Proficiency Test Exercises

IAEA-TEL-2021-03 WWOPT and IAEA-TEL-2021-04 ALMERA Proficiency Test

IAEA-TEL-2021-03 WWOPT and IAEA-TEL-2021-04 ALMERA Proficiency Test on determination of anthropogenic and natural radionuclides in water, Japanese bamboo and simulated swipe samples


Sample Code Sample Matrix Weight
(Approx. in grams)
Radionuclide analysis required

01Spiked water500
Anthropogenic gamma and alpha emitting radionuclides, gross alpha and beta (GAB)
02Spiked water500Anthropogenic gamma emitting radionuclides, H-3 (for intercomparison only), Sr-90, and GAB
03Spiked water
500Quality control (QC) with known activity concentrations of radionuclides
04Japanese bamboo150Anthropogenic gamma emitting radionuclides
05Spiked water500
Gamma emitters, and transuranic radionuclides (TRU), GAB
06 Spiked water50QC sample for TRU determination
07a/07bSimulated swipe samples2 pcsGamma emitters, TRU, GAB (identical samples)
08QC swipe sample1 pcGamma emitters, TRU
09Blank swipe sample1 pcBlank sample for the swipe samples

Tentative time schedule

DeadlinePhase/Action
2021-03-19
Registration
July 2021
Shipment of Sample Kits
2021-10-15Data Reporting
2021-10-29Individual evaluation for download


Proficiency Tests concluded

IAEA-TEL-2020-03 WWOPT 2020 and IAEA-TEL-2020-04 ALMERA PT 2020

Proficiency Test on determination of anthropogenic and natural radionuclides in water and fish samples and gross alpha and beta estimation on simulated aerosol filter.

  • Detailed Sample Description:
    • Sample 01, Water spiked with anthropogenic and natural radionuclides, 500 g;
    • Sample 02, Water spiked with anthropogenic gamma and beta emitters, 500 g;
    • Sample 03, Water as QC sample, with known radionuclide content (isotope and activity with associated uncertainty), 500 g
    • Sample 04, Dried fish sample spiked with anthropogenic and natural radionuclides, sample volume approx. 150 g
    • Sample 05, 06 and 07, Printed disk samples for gross alpha and beta measurement, Sr-90(Y-90), Cm-244 and mixed respectively

PT-ID
Count Participants Registered from Number of Countries Count Results submitted from Number of Countries
IAEA-TEL-2020-03257
6921558
IAEA-TEL-2020-04105
598951

Documents

S-Shape Reports:

  • WWOPT: 
  • ALMERA: 


IAEA-TEL-2019-03 WWOPT 2019 and IAEA-TEL-2019-04 ALMERA PT 2019

Determination of anthropogenic and natural radionuclides in water, shrimp and simulated filters The identification of the gamma-emitting radionuclides has to be carried-out by the participants. The alpha and beta emitters to be analysed will be specified in the cover letter.

  • Detailed Sample Description:
    • Sample 01 Drinking water spiked with anthropogenic gamma-emitting isotopes and Sr-89, Sr-90 (in equilibrium with Y-90, 500 g,
    • Sample 02 Drinking water spiked with anthropogenic gamma and beta emitters, 500 g
    • Sample 03 Drinking water as QC sample, with known radionuclide content (isotope and activity with associated uncertainty), 500 g
    • Sample 04 Shrimp. 200 g
    • Sample 05, 06, 07 Simulated Air Filters

PT-ID Count Participants Registered from Number of Countries Count Results submitted from Number of Countries
IAEA-TEL-2019-032947428974
IAEA-TEL-2019-041065910558

Documents


IAEA-TEL-2018-03 WWOPT 2018 and IAEA-TEL-2018-04 ALMERA PT 2018

Determination of anthropogenic and natural radionuclides in water, milkpowder and calcium carbonate The identification of the gamma-emitting radionuclides has to be carried-out by the participants. The alpha and beta emitters to be analysed will be specified in the cover letter.

  • Detailed Sample Description:
    • Sample 01 Drinking water spiked with anthropogenic gamma-emitting isotopes and Sr-89, Sr-90 (in equilibrium with Y-90, 500 g,
    • Sample 02 Drinking water spiked with anthropogenic gamma and beta emitters, 500 g
    • Sample 03 Drinking water as QC sample, with known radionuclide content (isotope and activity with associated uncertainty), 500 g
    • Sample 04 Agricultural soil spiked with anthropogenic gamma emitter radionuclides, sample volume approx. 250 g
    • Sample 05, 06, 07 Contaminated surfaces for surface contamination measurement

PT-ID Count Participants Registered from Number of Countries Count Results submitted from Number of Countries
IAEA-TEL-2018-033007526766
IAEA-TEL-2018-0498608854

Documents


IAEA-TEL-2017-03 WWOPT 2017 and IAEA-TEL-2017-04 ALMERA PT 2017

Proficiency Test on the determination of anthropogenic and natural radionuclides in water, milk powder and Ca-carbonate of natural origin. The identification of the gamma-emitting radionuclides has to be carried-out by the participants. The alpha and beta emitters to be analysed will be specified in the cover letter.

  • Detailed Sample Description:
    • Sample 01 drinking water spiked with gamma-emitting isotopes and gross alpha/beta, 500 g,
    • Sample 02 drinking water spiked with anthropogenic gamma emitting isotopes, Radio-Sr and Tritium Isotopes, 500 g
    • Sample 03 QC sample, water, 500g
    • Sample 04 milk powder, Radio-SR Isotopes, Cs-134, Cs-137
    • Sample 05 calcium carbonate (CaCO3) with NORM

PT-ID Count Participants Registered from Number of Countries Count Results submitted from Number of Countries
IAEA-TEL-2017-032536422560
IAEA-TEL-2017-0499629058


IAEA-TEL-2016-03 WWOPT 2016 and IAEA-TEL-2016-04 ALMERA PT 2016

Determination of anthropogenic and natural radionuclides in water, biota and soil samples The identification of the gamma-emitting radionuclides has to be carried-out by the participants. The alpha and beta emitters to be analysed will be specified in the cover letter.

Almera only: For U-series the measurement by gamma ray spectrometry should be performed, when the Ra-226 and Rn-222 equilibrium is reached in the sample (minimum 30 days after closing the sample into the Rn-tight sample container). The activity reporting for progenies of natural decay series should be based exactly on the identified radionuclide, without branching ration correction.

  • Detailed Sample Description:
    • Sample 01 drinking water spiked with gamma-emitting isotopes and gross alpha/beta, 500 g,
    • Sample 02 drinking water spiked with beta-emitting isotopes (Sr-90 and Sr-89), Am-241 and Cm-244 for gross alpha/beta, 500 g
    • Sample 03 milled clover spiked with anthropogenic radionuclides (the isotopes and activity values are published in the cover letter), 100 g
    • Sample 04 spruce needles, naturally contaminated with Sr-90 and gamma emitters, 120 g
    • Sample 05 sediment containing NORM (only ALMERA), 100 g 

PT-ID Count Participants Registered from Number of Countries Count Results submitted from Number of Countries
IAEA-TEL-2016-032816125657
IAEA-TEL-2016-0480517649


IAEA-TEL-2015-03 WWOPT and IAEA-TEL-2015-04 ALMERA PT

Proficiency test on the determination of anthropogenic and natural radionuclides in water, brown rice and soil samples at the suggestion of the ALMERA Reference Material and Proficiency Test Workgroup during the coordination meeting held in Vienna, 2014.

The identification of the gamma-emitting radionuclides has to be carried-out by the participants. For U-series the measurements should be performed, when the Ra-226 and Rn-222 equilibrium is reached in the sample (minimum 30 days after closing the sample into the sample container, and the application of Rn tight container is recommended). The activity reporting in case of progenies of natural decay series should be based exactly on the identified radionuclide. For example please do not apply the branching ratio correction for the activity calculation of the Tl-208 isotope.

  • Detailed Sample Description:
    • 01 Spiked water, 500g, Anthropogenic gamma emitters and Sr-90
    • 02 Spiked water, 500g, Anthropogenic gamma emitters
    • 03 Spiked water, 500g, Quality control sample with known massic activity of Eu-152
    • 04 Brown rice, 200g, Gamma emitters 
    • 05 Soil, 250g, Gamma emitters, Sr-90, U-238, U-234 and Pu isotopes
    • 06 Soil, 200g, U-238 and U-234

PT-ID Count Participants Registered from Number of Countries Count Results submitted from Number of Countries
IAEA-TEL-2015-032435723557
IAEA-TEL-2015-0482
577352


For more information contact the responsible officer Mr. Sandor Tarjan at: s.tarjan@iaea.org