New Polish certified reference materials for multielement inorganic trace analysis

Dybczyński, R.; Polkowska-Motrenko, Halina; Samczyński, Zbigniew; Szopa, Z.

doi:10.1007/bf00322563

Cited by 26 publications

(11 citation statements)

References 16 publications

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“…Reference materials such as tobacco or cabbage leaves are available, with certified values for trace elements (supplied by the Institute of Nuclear Chemistry and Technology, Warszawa, Poland and by the Institute of Physics and Nuclear Techniques, Cracow, Poland, respectively). Studies have been published on the quantification of trace elements in biomass samples, such as cigarette tobacco,18,, 19 spice samples,20 lichens,21 lucerne, melon, maize, barley, carnation and oil palm,22 foods such as bread, fruit and vegetables23 and on standard reference materials alone 24. –, , 27 Inductively coupled plasma mass spectrometry (ICP‐MS) has been the technique of choice in these studies with detection limits down to parts‐per‐trillion, with introduction of the sample by solution nebulisation after dissolution of the solid sample 28.…”

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confidence: 99%

Determination of trace elements by inductively coupled plasma mass spectrometry of biomass and fuel oil reference materials using milligram sample sizes

Lachas

Richaud

Herod

et al. 2000

Rapid Commun. Mass Spectrom.

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Most of the analytical techniques used to quantify elements associated with solid samples suffer from high detection limits and cannot be used for trace elements in biomass samples, particularly when only 20 mg are available for analysis. Inductively coupled plasma mass spectrometry (ICP-MS) can achieve detection limits of parts-per-trillion with liquid sample introduction by solution nebulisation. This technique was therefore tested with two standard biomass reference materials: oriental tobacco leaves and cabbage leaves. Two preparations successfully used on coal standards were used to digest the solid samples: a total digestion method (wet ashing digestion) and a partial leaching (microwave extraction). The concentrations of up to seventeen elements (As, Ba, Be, Cd, Co, Cr, Cu, Ga, Mn, Mo, Ni, Pb, Sb, Se, Sn, V and Zn) were measured after the two preparations. The accuracy and sensitivity of the measurements improved when the dilution factor decreased from 5000 to 1000 and to 500. Since the proportion of mineral matter in biomass samples is small (5%), the microwave digestion extracted elements that are generally not completely extracted from coal samples (e.g. Sb). However, some trace element concentrations were below the limit of quantification after microwave extraction, even with a reduced dilution factor (As, Se and Mo) and could not be quantified. A fuel oil was also digested. The trace element concentrations were very low (between 28 and 0.1 microgram g(-1)) but acceptable results were obtained by applying a dilution factor of 100. Only six elements in the fuel oil (As, Ba, Co, Ni, Se and V) had certified or indicated values. Factors affecting the accuracy and sensitivity of the analyses are discussed. The reproducibility of analysis of the tobacco leaf standard was checked over a period of nine months by both digestion methods. The wet ashing method gave acceptable reproducibility for Ba, Cd, Co, Cu, Ga, Mn, Mo, Ni, Pb, V and Zn but poor precision for Cr, Se and Sn and showed evidence of residual chloride interference for As. The microwave extraction gave good reproducibility for As, Ba, Cd, Co, Cr, Cu, Mo, Ni and Zn but poor precision for Se and low recoveries for Ga, Mn, Sn and V. In spite of the small quantities of material analysed, it proved possible to determine the trace elements at levels down to 0.1 microgram g(-1) in the reference materials.

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confidence: 99%

Determination of trace elements by inductively coupled plasma mass spectrometry of biomass and fuel oil reference materials using milligram sample sizes

Lachas

Richaud

Herod

et al. 2000

Rapid Commun. Mass Spectrom.

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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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“…For barley the analogous values are: 33-218 mg kg −1 (Fe), 0.10-0.67 mg kg −1 (Ni), and 4.4-44 µg kg −1 (Co), respectively [1]. In CTA-OTL-1 Ni and Co were certified (6.32 and 0.879 mg kg −1 , respectively) [8]. In INCT-OBTL-1 their certified values are 8.50 and 0.981 mg kg −1 , respectively [9].…”

Section: Nuclear Interferencesmentioning

confidence: 97%

“…In a world-wide intercomparison aimed at certification of trace elements in Oriental Tobacco Leaves, 60 laboratories supplied results for Fe [7]. However only "information" and not "recommended" (certified) value could be assigned to Fe in CTA-OTL-1 certified reference material (CRM) [7,8] because a detailed analysis of the supplied data revealed that groups of results by various analytical techniques differed significantly (cf. Fig.…”

Section: Introductionmentioning

confidence: 99%

Ratio primary reference measurement procedure (RPRMP) for the determination of iron in biological materials by RNAA

Dybczyński¹,

Danko

Pyszynska

et al. 2012

Radiochimica Acta

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Ratio primary reference measurement procedure (RPRMP) / NAA / RNAA / Definitive method / Iron / Anomalous sorption / Tobacco leaves CRM Summary.A new ratio primary reference measurement procedure (RPRMP), i.e. a definitive method for the determination of iron in biological materials, was devised. It is based on a combination of neutron activation with selective and quantitative post-irradiation separation of 59 Fe from all accompanying radionuclides followed by γ -ray spectrometric measurement. The novel separation scheme, involving the use of column chromatography on two (anion and cation) exchange columns, was extensively checked using radioactive tracers and was shown to be very selective and truly quantitative. High selectivity of the separation scheme was achieved by exploiting the "anomalous" sorption of Fe(III) on medium cross-linked sulfonic cation exchanger from concentrated hydrobromic acid solution. The accuracy of the RPRMP was demonstrated by the analysis of several certified reference materials. The method was used for the analysis of the three INCT CRMs based on tobacco leaves in which Fe was originally not certified, because widely discordant results by different analytical techniques were obtained in world-wide intercomparisons. The results by RPRMP in those materials were in a very good agreement with our own results by INAA. Tentative certified values (TCV) for Fe were proposed as a combination of RPRMP and INAA results. Some possible sources of systematic errors in other analytical methods were discussed.

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New Polish certified reference materials for multielement inorganic trace analysis

Cited by 26 publications

References 16 publications

Determination of trace elements by inductively coupled plasma mass spectrometry of biomass and fuel oil reference materials using milligram sample sizes

Determination of trace elements by inductively coupled plasma mass spectrometry of biomass and fuel oil reference materials using milligram sample sizes

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

Ratio primary reference measurement procedure (RPRMP) for the determination of iron in biological materials by RNAA

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