Activity of All-Russian Research Institute of Physical-Technical and Radio-Technical Measurements (VNIIFTRI) in the sphere of physicochemical measurements

Author:

Dobrovolskiy V. I.1,Oganyan N. G.1,Prokunin S. V.1

Affiliation:

1. All-Russian Research Institute of Physicol-Technical and Radio-Technical Measurements (VNIIFTRI), Mendeleevo, Moscow Region

Abstract

This article presents the description, metrological characteristics and application of State primary standards developed at the All-Russian Research Institute of Physicol-Technical and Radio-Technical Measurements (VNIIFTRI). These include the state primary standards for pH and pX in aqueous solutions, units of the dispersed parameters of aerosols, suspensions and powdery materials, units of the mass fraction and mass (molar) concentration of inorganic components in aqueous solutions based on gravimetric and spectral methods of analysis. In addition, the article discusses R&D projects that are currently being realized at VNIIFTRI, including the production of standard-titres and buffer solutions for pH-metry, as well as working standards for assessing the activity of Na+, K+, F-, Cl-, Br-, I-, NO3-(pX) ions in aqueous media.

Publisher

Ural Research Institute of Metrology (UNIIM)

Subject

General Medicine

Reference4 articles.

1. ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories // ISO [Электронный ресурс] URL: https://www.iso.org/ standard/39883.html

2. GOST 8.120-2014 State system for ensuring the uniformity of measurements. State traceability scheme for the instruments instruments intendend for measuring pH. Moscow, Standartinform Publ., 2015. (in Russ.).

3. GOST R 8.641-2013 State system for ensuring the iniformity of measurements. State verification scheme for measuring instruments of the water solutions ion content by electrochemical methods (pX measuring instruments). Moscow, Standartinform Publ., 2015. (in Russ.).

4. Lu Yang et all. Final report of the SIM.QM-S 7 supplementary comparison, trace metals in drinking water. Metrologia, Vol. 55, Technical Supplement, 2018. Doi 10.1088/0026–1394/55/1A/08002

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