Int. J. Metrol. Qual. Eng.
Volume 13, 2022
|Number of page(s)||10|
|Published online||02 August 2022|
Absolute salinity determination by oscillation-type densimetry and refractometry
DMET-LNM, Instituto Português da Qualidade, I.P., Caparica, Portugal
2 CQE-DQB, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
* Corresponding author: firstname.lastname@example.org
Accepted: 7 June 2022
The determination of salinity values from SI traceable densimetry and refractometry measurement results enable SI traceability of the former. In this work, a short study of the metrological compatibility of salinity determinations via these two methods for sodium chloride in ultrapure water solutions and two different standard seawaters (OSIL and ERM) solutions, in the [35.0; 215.0] g kg−1 interval, is presented. It evidenced the metrological compatibility of the salinity determinations in the referred interval. The largest salinity values enabled to test the matrix effect upon the determinations and concluded the preferable use of densimetry technique, when occurring.
Key words: Absolute salinity / densimetry / refractometry / metrological compatibility
© A. Furtado et al., Published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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