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Uncertainty of the concentration of a copper calibration solution

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Abstract

The postulated uncertainty of many commercially available standard solutions is estimated on the basis of uncertainties of individual preparation steps. The declared concentration of Cu standard solution (1000 ± 2) mg/L was verified by gravimetric analysis (found (1000.7 ± 0.4) mg/L), isotope dilution with commercial and laboratory-prepared isotope-enriched solutions (found (1000.6 ± 16.8) mg/L and (1002.4 ± 3.6) mg/L, respectively), and by atomic absorption spectrometry (found (1001.4 ± 5.3) mg/L). Uncertainty budgets of all used methods are given and the procedures of uncertainty estimation are fully documented.

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Acknowledgments

Financial support of the Ministry of Education, Youth, and Sports of the Czech Republic (project no. MSM 6046137307) is gratefully acknowledged.

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Authors and Affiliations

  1. Institute of Chemical Technology, Technická 5, 166 28, Prague 6, Czech Republic

    Oto Mestek, Kateřina Mališová, Richard Koplík, Jan Polák & Miloslav Suchánek

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  1. Oto Mestek
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  2. Kateřina Mališová
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  3. Richard Koplík
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  4. Jan Polák
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  5. Miloslav Suchánek
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Correspondence to Oto Mestek.

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Mestek, O., Mališová, K., Koplík, R. et al. Uncertainty of the concentration of a copper calibration solution. Accred Qual Assur 13, 305–310 (2008). https://doi.org/10.1007/s00769-008-0372-z

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  • DOI: https://doi.org/10.1007/s00769-008-0372-z

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