Abstract
Despite the indication of accuracy indicators in certified and standardized methods of quantitative chemical analysis, in some cases laboratories need to independently calculate the accuracy of the measurement results. This necessitates the development of methods for such calculations for specific examples of quantitative chemical analysis.
Using the example of a standardized method for determining the mass concentration of total iron in drinking water, which has many typical features characteristic of quantitative chemical analysis, the sequence of calculating the extended uncertainty of the measurement result is shown and an example of such calculation is given.
Keywords
quantitative chemical analysis, mass concentration, measurement result, measurement methods, measuring instruments, calibration, standard uncertainty, expanded uncertainty
References
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Akhnazarova S.L., Kafarov V.V. Optimization of Experiment in Chemistry and Chemical Technology: handbook for universities. M.: Vysshaya shkola, 1978. 319 p. (In Russ.)
For citation
Dobrotin S.A., Latukhina J.A. Estimation of uncertainty of the measurement result of mass concentration of total iron in drinking water. Almanac of Modern Metrology. 2026; 45 (1): 95–109.
Financing
The authors declare that no funds, grants or other support were received during conducting the research and preparation of the article.
Contribution of the authors
S.A. Dobrotin — theoretical part and measurements; J.A. Latukhina — technical support.
Conflict of interest
The authors declare that they have no potential conflict of interest related to the research presented in this article.
This work is licensed under a Creative Commons Attribution 4.0 License (CC BY 4.0)
©
Sergey A. Dobrotin, Julia A. Latukhina, 2025
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