Results of pilot comparisons of national standards for the activity of hydrogen ions in aqueous solutions-Reference-Cited by-同舟云学术

Results of pilot comparisons of national standards for the activity of hydrogen ions in aqueous solutions

Published:2021 Issue:1 Volume: Page:66-72
ISSN:0368-1025
Container-title:Izmeritel`naya Tekhnika
language:
Short-container-title:Izmer. Tekhn.

Author:

Prokunin Sergey V.¹^ORCID,Shchipunov Andrey N.¹,Vengina Daria A.¹^ORCID,Bastkowskiy Frank²,Uysal Emrah³,Mkrtichyan Samvel⁴,Zhanasbaeva Bibinur K.⁵,Beskupskiy Anatoly⁶,Tabullo Olga B.⁷,Zolotorevich Elena A.⁸,Petrenko Anton V.⁹

Affiliation:

1. Russian Metrological Institute of Technical Physics and Radio Engineering (VNIIFTRI)

2. Physikalisch-Technische Bundesanstalt (PTB)

3. TÜBITAK UME National Metrology Institute (TÜBITAK UME)

4. Institute of Metrology within the National Agency of Georgia for Standards and Metrology (GeoSTM)

5. Kazakhstan Institute of Metrology (KazInMetr)

6. National Institute of Metrology (INM)

7. Center for Standardization and Metrology under the Ministry of Economy of the Kyrgyz Republic (KYRGYZSTANDART)

8. Belarusian state Institute of Metrology

9. All-Ukrainian State Scientific-Production Center of Standardization

Abstract

The enormous needs in ensuring the measurement of the hydrogen index in various industries and the national economy of Russia make the measurement of the hydrogen index one of the most important methods for monitoring aqueous media. In 2013, work was carried out to enter into the State Register of Measuring Instruments of the Russian Federation a buffer solution and a standard titer with a pH value of 7.00 – a working pH standard of the 2nd category, which is one of the most demanded of non-standard solutions for verification and calibration pH measuring instruments. To confirm the metrological characteristics, pilot comparisons were organized within COOMET. This article presents the results of a pilot comparison to determine the pH of a phosphate buffer solution – a working standard of рН=7.00. 8 metrological institutes and 10 metrological organizations took part in the comparisons. The results obtained showed that the overwhelming majority of the participants in the comparisons presented the results of pH measurements, which have an uncertainty not exceeding ±0.03 of the average value, which is an acceptable criterion for measuring the pH.

Publisher

FSUE VNIIMS All-Russian Research Institute of Metrological Service

Subject

General Medicine

Reference10 articles.

1. Karpov O. V., Kutovoi V. D., Zvezdina V.A., Lukashov I. A., Kazakova M. V., Measurement Techniques, 2010, vol. 53, no. 1, pp. 40–50. https://doi.org/10.1007/s11018-010-9456-3

2. Karpov O. V., Zdorikov N. N., Kopaneva A. I., Maksimov I. I., Seiku E. E., Sobol' V. V., Zakonodatel'naya i prikladnaya metrologiya, 1985, no. 5, p. 7 (in Russian).

3. Prokunin S. V., Gosudarstvennyi pervichnyi ehtalon pokazatelya rn aktivnosti ionov vodoroda v vodnykh rastvorakh GET 54-2011 [State primary standard for the pH indicator of the activity of hydrogen ions in aqueous solutions GET 54-2011], Rossiiskaya Metrologicheskaya Ehntsiklopediya [Russian Metrological Encyclopedia}, St. Petersburg, Liki Rossii Publ., 2015, vol. 1, p. 383 (in Russian).

4. Brown R. J. C., Brewer P. J., Milton M. J. T., J. Measurement, 2013, vol. 46, no. 5, pp. 1726–1733. https://doi.org/10.1016/j.measurement.2013.01.007

5. Ferrara E., Prenesti E., Berto S., Role of the activity coefficient in the dissemination of pH: comparison of primary (harned cell) and secondary (glass electrode) measurements on phosphate buffer considering activity and concentration scales Fisicaro P., Analytical and Bioanalytical Chemistry, 2005, vol. 383, no. 2, pp. 341–348.