Performance and frequency of use of NAA and other techniques during the certification of two new Polish CMRs prepared by INCT

Dybczyński, R.; Danko, B.; Kulisa, Krzysztof; Maleszewska, E.; Polkowska-Motrenko, Halina; Samczyński, Zbigniew; Szopa, Z.

doi:10.1007/s10582-003-0022-y

Cited by 4 publications

(3 citation statements)

References 12 publications

(8 reference statements)

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“…At the first glance, one can notice practically exclusive share of the four methods in the certification of Oriental Basma Tobacco Leaves, namely, NAA, AAS, ES, and ICP-MS. A novelty is their roughly balanced contribution to the population of results. This is a significant difference compared with our former exercises, when AAS and NAA distinctly prevailed [15, 37, 55]. Simultaneously, the frequency of the use of ES and especially ICP-MS has been increasing constantly and dynamically since the new millennium.…”

Section: Certification Of the Materialsmentioning

confidence: 75%

Two New Reference Materials Based on Tobacco Leaves: Certification for over a Dozen of Toxic and Essential Elements

Samczyński

Dybczyński

Polkowska-Motrenko

et al. 2012

The Scientific World Journal

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The preparation, certification, and characterization of two new biological certified reference materials for inorganic trace analysis have been presented. They are based on two different varieties of tobacco leaves, namely, Oriental Basma Tobacco Leaves (INCT-OBTL-5), grown in Greece, and Polish Virginia Tobacco Leaves (INCT-PVTL-6), grown in Poland. Certification of the materials was based on the statistical evaluation of results obtained in a worldwide interlaboratory comparison, in which 87 laboratories from 18 countries participated, providing 2568 laboratory averages on nearly 80 elements. It was possible to establish the certified values of concentration for many elements in the new materials, that is, 37 in INCT-OBTL-5 and 36 in INCT-PVTL-6, including several toxic ones like As, Cd, Hg, Pb, and so forth. The share and the role of instrumental analytical techniques used in the process of certification of the new CRMs are discussed.

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Section: Certification Of the Materialsmentioning

confidence: 75%

Two New Reference Materials Based on Tobacco Leaves: Certification for over a Dozen of Toxic and Essential Elements

Samczyński

Dybczyński

Polkowska-Motrenko

et al. 2012

The Scientific World Journal

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“…In the case of M-3 HerTis and M-5 Cod-Tis, the picture is roughly the same. As is evident, four methods occupy a predominant position in the certification, namely, inductive coupled plasma mass spectrometry (ICP-MS), atomic absorption spectrometry (AAS), neutron activation (Dybczyński et al 2003) and deserves a profound reflection. As follows from a recent review encompassing the time span of 40 years, in the years 1975-1980, the NAA was a dominating technique and its share was in the range of 40-66% (Dybczyński 2019).…”

Section: The Share Of Analytical Techniques In the Certification Process Now In The Past Its Evolution And Consequencesmentioning

confidence: 99%

Preparation of Three New Certified Reference Materials for Food and Environmental Analysis and Certification Using Laboratory Intercomparison as well as Primary Reference Measurement Procedures

et al. 2021

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Three new reference materials: MODAS-3 Herring Tissue (M-3 HerTis), MODAS-4 Cormorant Tissue (M-4 CormTis), and MODAS-5 Cod Tissue (M-5 CodTis) were prepared and certified on the basis of results of a worldwide intercomparison exercise. Independently of our proven method of establishing the certified and information values, the content of several essential and toxic elements was additionally determined by the use of ratio primary reference measurement procedures (definitive methods) based on radiochemical neutron activation analysis (RNAA) in the case of As, Cd, Co, Cr, Fe, Mo, Se, and U and isotope dilution mass spectrometry (IDMS) in the case of Hg, respectively. Good agreement of the established certified values and the results obtained by ratio primary reference measurement procedures confirmed the validity of the certification procedure. The total number of elements which could be certified amounted to 30, 21, 18 in M-3 HerTis, M-4 CormTis, and M-5 CodTis, respectively. The relative frequency of use of individual analytical techniques in this intercomparison campaign was calculated and discussed. Inductively coupled plasma mass spectrometry (ICP-MS) is now a dominant technique, followed by atomic absorption spectroscopy (AAS), NAA, and emission spectroscopy (ES). The decreasing share of NAA as compared to several earlier intercomparison exercises should be noticed. NAA is the only method in the array of highly sensitive methods of inorganic trace analysis, which is essentially free from blank. The lack of this method in the foreseeable future may be an obstacle in the prospective certification campaigns and may endanger the implementation of quality assurance in trace analysis.

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“…The spread of results obtained for Cr (0.071–19.517 mg kg −1 ) supplied by the ILC participants in the case of material of plant origin, INCT-OBTL-5 made it impossible to assign a certified value [ 13 ]. Among the above-mentioned techniques applied for the determination of chromium, NAA has the highest metrological quality [ 14 ] and plays an important role in the certification of reference materials [ 15 , 16 ]. NAA can be in two modes: instrumental neutron activation analysis (INAA) and radiochemical neutron activation analysis (RNAA).…”

Section: Introductionmentioning

confidence: 99%

Determination of chromium in biological materials by radiochemical neutron activation analysis (RNAA) using manganese dioxide

Kużelewska

Polkowska-Motrenko

Danko

2016

J Radioanal Nucl Chem

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A procedure based on radiochemical neutron activation analysis was developed for the determination of chromium in biological materials. The procedure consists of irradiation of reference and test samples in a nuclear reactor, microwave sample digestion, selective and quantitative radiochemical separations of chromium and gamma-ray spectrometric measurement of 51Cr. Separation of chromium from the accompanying elements was done on the column packed with inorganic resin MnO2 Resin. Distribution coefficients of Cr, Zn, Co, Cs and Sc were determined in the system: MnO2 Resin—HCl, HNO3 and H2SO4. Accuracy of the procedure was checked by analysis of certified reference materials.

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Performance and frequency of use of NAA and other techniques during the certification of two new Polish CMRs prepared by INCT

Cited by 4 publications

References 12 publications

Two New Reference Materials Based on Tobacco Leaves: Certification for over a Dozen of Toxic and Essential Elements

Two New Reference Materials Based on Tobacco Leaves: Certification for over a Dozen of Toxic and Essential Elements

Preparation of Three New Certified Reference Materials for Food and Environmental Analysis and Certification Using Laboratory Intercomparison as well as Primary Reference Measurement Procedures

Determination of chromium in biological materials by radiochemical neutron activation analysis (RNAA) using manganese dioxide

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