| DOI | Resolve DOI: https://doi.org/10.1088/0026-1394/58/1A/08006 |
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| Author | Search for: Molloy, John L.; Search for: Winchester, Michael R.; Search for: Butler, Therese A.; Search for: Possolo, Antonio M.; Search for: Rienitz, Olaf; Search for: Roethke, Anita; Search for: Goerlitz, Volker; Search for: Sena, Rodrigo Caciano De; Search for: Almeida, Marcelo Dominguez; Search for: Yang, Lu1ORCID identifier: https://orcid.org/0000-0002-6896-8603; Search for: Methven, Brad1; Search for: Nadeau, Kenny1; Search for: Arancibia, Patricia Romero; Search for: Bing, Wu; Search for: Tao, Zhou; Search for: Snell, James; Search for: Vogl, Jochen; Search for: Koenig, Maren; Search for: Kotnala, R. K.; Search for: Tripathy, S. Swarupa; Search for: Elishian, Christine; Search for: Ketrin, Rosi; Search for: Suzuki, Toshihiro; Search for: Okumu, Tom Oduor; Search for: Yim, Yong-Hyeon; Search for: Heo, Sung Woo; Search for: Min, Hyung Sik; Search for: Han, Myung Sub; Search for: Lim, Youngran; Search for: Manzano, Judith Velina Lara; Search for: Regalado, Francisco Segoviano; Search for: Torres, Maria del Rocio Arvizu; Search for: Moya, Edith Valle; Search for: Buzoianu, Mirella; Search for: Sobina, Alena; Search for: Zyskin, Veniamin; Search for: Sobina, Egor; Search for: Migal, Pavel; Search for: Linsky, Maré; Search for: Can, Süleyman Z.; Search for: Ari, Betul; Search for: Infante, Heidi Goenaga |
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| Affiliation | - National Research Council of Canada. Metrology Research Centre
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| Format | Text, Article |
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| Physical description | 38 p. |
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| Abstract | 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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| Publication date | 2020-12-24 |
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| Publisher | IOP |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | c2df3d7f-7843-4aa2-ae0e-94d5de31757b |
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| Record created | 2022-07-29 |
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| Record modified | 2024-08-12 |
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