| DOI | Trouver le DOI : https://doi.org/10.1088/0026-1394/58/1A/08006 |
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| Auteur | Rechercher : Molloy, John L.; Rechercher : Winchester, Michael R.; Rechercher : Butler, Therese A.; Rechercher : Possolo, Antonio M.; Rechercher : Rienitz, Olaf; Rechercher : Roethke, Anita; Rechercher : Goerlitz, Volker; Rechercher : Sena, Rodrigo Caciano De; Rechercher : Almeida, Marcelo Dominguez; Rechercher : Yang, Lu1Identifiant ORCID : https://orcid.org/0000-0002-6896-8603; Rechercher : Methven, Brad1; Rechercher : Nadeau, Kenny1; Rechercher : Arancibia, Patricia Romero; Rechercher : Bing, Wu; Rechercher : Tao, Zhou; Rechercher : Snell, James; Rechercher : Vogl, Jochen; Rechercher : Koenig, Maren; Rechercher : Kotnala, R. K.; Rechercher : Tripathy, S. Swarupa; Rechercher : Elishian, Christine; Rechercher : Ketrin, Rosi; Rechercher : Suzuki, Toshihiro; Rechercher : Okumu, Tom Oduor; Rechercher : Yim, Yong-Hyeon; Rechercher : Heo, Sung Woo; Rechercher : Min, Hyung Sik; Rechercher : Han, Myung Sub; Rechercher : Lim, Youngran; Rechercher : Manzano, Judith Velina Lara; Rechercher : Regalado, Francisco Segoviano; Rechercher : Torres, Maria del Rocio Arvizu; Rechercher : Moya, Edith Valle; Rechercher : Buzoianu, Mirella; Rechercher : Sobina, Alena; Rechercher : Zyskin, Veniamin; Rechercher : Sobina, Egor; Rechercher : Migal, Pavel; Rechercher : Linsky, Maré; Rechercher : Can, Süleyman Z.; Rechercher : Ari, Betul; Rechercher : Infante, Heidi Goenaga |
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| Affiliation | - Conseil national de recherches Canada. Centre de recherche en métrologie
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| Format | Texte, Article |
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| Description physique | 38 p. |
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| Résumé | CCQM-K143 is a key comparison that assesses participants’ ability to prepare single element calibration solutions. Preparing calibration solutions properly is the cornerstone of establishing a traceability link to the International System of Units (SI), and therefore should be tested in order to confirm the validity of CCQM comparisons of more complex materials. CCQM-K143 consisted of participants each preparing a single copper calibration solution at 10 g/kg copper mass fraction and shipping 10 bottled aliquots of that solution to the coordinating laboratory, the National Institute of Standards and Technology (NIST). The masses and mass fraction for the prepared solutions were documented with the submitted samples. The solutions prepared by all participants were measured at NIST by high performance inductively coupled plasma optical emission spectroscopy (HP-ICP-OES). The intensity measurements for copper were not mapped onto values of mass fraction via calibration. Instead, ratios were computed between the measurements for copper and simultaneous measurements for manganese, the internal standard, and all subsequent data reductions, including the computation of the KCRV and the degrees of equivalence, were based on these ratios. Other than for two participants whose measurement results appeared to suffer from calculation or preparation errors, all unilateral degrees of equivalence showed that the measured values did not differ significantly from the KCRV. These results were confirmed by a second set of ICP-OES measurements performed by the Physikalisch-Technische Bundesanstalt (PTB). CCQM-K143 showed that participants are capable of preparing calibration solutions starting from high purity, assayed copper metal. Similar steps are involved when preparing solutions for other elements, so it seems safe to infer that similar capabilities should prevail when preparing many different, single-element solutions. |
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| Date de publication | 2020-12-24 |
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| Maison d’édition | IOP |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | c2df3d7f-7843-4aa2-ae0e-94d5de31757b |
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| Enregistrement créé | 2022-07-29 |
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| Enregistrement modifié | 2024-08-12 |
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