IAEA proficiency tests for determination of radionuclides in sea water

Harms, A.V.; Pham, Mai Khanh; Blinova, Oxana; Tarján, S.; Nies, H.; Osvath, I.

doi:10.1016/j.apradiso.2017.02.015

Cited by 3 publications

(8 citation statements)

References 3 publications

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“…0.768 mBq L -1 , 0.866 mBq L -1 and 0.826 mBq L -1 which were 0 %,  12.76 % and  7.55 % bias for 200 L, 300 L and 600 L respectively as referred to the AMP pre-concentration method result from the PT exercise [2]. Even the minimum and maximum activity concentrations i.e.…”

Section: Resultsmentioning

confidence: 99%

“…The method to determine activity concentration of 137 Cs in seawater samples using AMP preconcentration method passed the proficiency test exercise, "IAEA proficiency test exercise on Marine benchmark study on the possible impact of the Fukushima radioactive releases in the Asia-Pacific Region for Caesium Determination in Sea Water (RCA RAS/7/021)", for accuracy, precision and trueness criteria with -1.00 % bias [2]. The same method was applied to determine 137 Cs in seawater in this analysis and result is shown in table 1.…”

Section: Resultsmentioning

confidence: 99%

“…The classical ammonium molybdophosphate (AMP) pre-concentration method has been used routinely to determine 137 Cs in seawater. This analysis passed the proficiency test exercise under the project "IAEA proficiency test exercise on Marine benchmark study on the possible impact of the Fukushima radioactive releases in the Asia-Pacific Region for Caesium Determination in Sea Water (RCA RAS/7/021)" [2]. Routinely seawater samples are collected from fields and brought to our laboratory.…”

Section: Introductionmentioning

confidence: 99%

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Determination of ¹³⁷Cs in large volume seawater using Cu-hexacyanoferrate cartridge filters

Visetpotjanakit¹,

Tumnoi²

2017

J. Phys.: Conf. Ser.

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Abstract.A simple method to determine 137 Cs in seawater has been developed based on the use of a Cu-hexacyanoferrate scavenger. The Cu-hexacyanoferrate supported on cotton wound cartridge filter was used to absorb 137 Cs from seawater by passing large volumes over the cartridge filters with flowrate of 240 L hr -1 . Results from the Cu-hexacyanoferrate method were proved acceptable for accuracy with bias below  20 % i.e. -9.16 to + 18.55 % when compared with the traditional ammonium molybdophosphate pre-concentration method. This developed method is cost-effective and less time consuming. In addition it can be easily performed at sampling fields.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Determination of ¹³⁷Cs in large volume seawater using Cu-hexacyanoferrate cartridge filters

Visetpotjanakit¹,

Tumnoi²

2017

J. Phys.: Conf. Ser.

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“…The relative bias (RB) was the first step in producing a score for a result Value Analyst. RB between the Analyst's value and the IAEA target value was calculated and expressed as a percentage according to equation (1).…”

Section: Data Evaluationmentioning

confidence: 99%

“…The PT results judged were based on IAEA criteria using different statistic evaluation criterion such as accuracy, precision and trueness as follow [1,[6][7]; 2.4.1. Accuracy.…”

Section: Data Evaluationmentioning

confidence: 99%

Participation in proficiency test for tritium strontium and caesium isotopes in seawater 2015 (IAEA-RML-2015-02)

Visetpotjanakit¹,

Kaewpaluek²

2017

J. Phys.: Conf. Ser.

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Sr in seawater to the IAEA. A critical review was made to check suitability of our methodology and the criteria for the accuracy, precision and trueness of our data. The results of both 134 Cs and 137 Cs passed all criteria which were assigned "Accepted" statuses. Whereas 90 Sr analysis did not pass the accuracy test therefore it was considered as "Not accepted" Our results and all other participant results with critical comments were published in the IAEA proficiency test report.

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Automatic modeling using PENELOPE of two HPGe detectors used for measurement of environmental samples byγ-spectrometry from a few sets of experimental efficiencies

Guerra

Rubiano

Winter

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tThe aim of this paper is to characterize two HPGe gamma-ray detectors used in two different laboratories for environmental radioactivity measurements, so as to perform efficiency calibrations by means of Monte Carlo Simulation. To achieve such an aim, methodologies developed in previous papers have been applied, based on the automatic optimization of the model of detector, so that the differences between computational and reference FEPEs are minimized. In this work, such reference FEPEs have been obtained experimentally from several measurements of the IAEA RGU-1 reference material for specific source-detector arrangements. The models of both detectors built through these methodologies have been validated by comparing with experimental results for several reference materials and different measurement geometries, showing deviations below 10% in most cases. (J.G. Guerra). work [16,17], in which automatic computational methodologies for the characterization of HPGe detectors have been developed.In the first paper [16], a simple methodology of characterization is proposed, consisting in an implementation of a mono-objective optimization evolutionary algorithm, called Differential Evolution or DE [18], together with the Monte Carlo Simulation code PENE-LOPE [19], so that a computational model of the detector would be built automatically, with the only requirements of an accurate set of reference FEPEs for a specific sample-detector arrangement and material of the sample, but restricted to those beakers with a diameter lower than the crystal diameter of the detector. In the second [17], the methodology proposed in the first work was upgraded, eliminating such restriction by both improving the detector model and implementing a multi-objective Differential Evolution algorithm or DEMO [20] instead of its monoobjective precursor DE. In both cases, the methodologies proved to obtain successfully a detector model which generated FEPEs equivalent to the ones taken as reference, which were calculated, for a given

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IAEA proficiency tests for determination of radionuclides in sea water

Cited by 3 publications

References 3 publications

Determination of ¹³⁷Cs in large volume seawater using Cu-hexacyanoferrate cartridge filters

Determination of ¹³⁷Cs in large volume seawater using Cu-hexacyanoferrate cartridge filters

Participation in proficiency test for tritium strontium and caesium isotopes in seawater 2015 (IAEA-RML-2015-02)

Automatic modeling using PENELOPE of two HPGe detectors used for measurement of environmental samples byγ-spectrometry from a few sets of experimental efficiencies

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IAEA proficiency tests for determination of radionuclides in sea water

Cited by 3 publications

References 3 publications

Determination of 137Cs in large volume seawater using Cu-hexacyanoferrate cartridge filters

Determination of 137Cs in large volume seawater using Cu-hexacyanoferrate cartridge filters

Participation in proficiency test for tritium strontium and caesium isotopes in seawater 2015 (IAEA-RML-2015-02)

Automatic modeling using PENELOPE of two HPGe detectors used for measurement of environmental samples byγ-spectrometry from a few sets of experimental efficiencies

Contact Info

Product

Resources

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Determination of ¹³⁷Cs in large volume seawater using Cu-hexacyanoferrate cartridge filters

Determination of ¹³⁷Cs in large volume seawater using Cu-hexacyanoferrate cartridge filters