Estimation of uncertainty of the measurement result of mass concentration of total iron in drinking water

Sergey A. Dobrotin1,
Julia A. Latukhina2 *

1, 2 FSBEI of HE “Nizhny Novgorod State Technical University named after R.E. Alekseev” (NNSTU), Nizhny Novgorod, Russia
1 dobrotin59@mail.ru, SPIN-code: 7150-3540, ORCID: 0000-0001-6925-2693, Scopus ID: 7006775958
2 ju1ia.a.latukhina@gmail.com ( *corresponding author), SPIN-code: 4868-2530, ORCID: 0000-0003-4183-3140

Al’manac of Modern Metrology № 1 (45) 2025, pages 95–109

The page of the article in Russian

Original article

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

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.

Funding. 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 interests. The authors declare that they have no potential conflict of interest related to the research presented in this article.

References

1. 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.)

The article was submitted 10.09.2025; approved after reviewing 09.12.2025; accepted for publication 22.12.2025.

Full texts of articles are available only in Russian in printed issues of the magazine.

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