A method to measure the density of seawater accurately to the level of 10−6
| Autor: | Hannes Schmidt, Henning Wolf, Egon Hassel |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Hydrostatic weighing
Materials science Atmospheric pressure General Engineering Analytical chemistry Substitution method 02 engineering and technology Atmospheric temperature range 01 natural sciences Measure (mathematics) 010309 optics 020401 chemical engineering 0103 physical sciences Compressibility Water density Seawater 0204 chemical engineering |
| Zdroj: | Metrologia. 53:770-786 |
| ISSN: | 1681-7575 0026-1394 |
| DOI: | 10.1088/0026-1394/53/2/770 |
| Popis: | A substitution method to measure seawater density relative to pure water density using vibrating tube densimeters was realized and validated. Standard uncertainties of 1 g m−3 at atmospheric pressure, 10 g m−3 up to 10 MPa, and 20 g m−3 to 65 MPa in the temperature range of 5 °C to 35 °C and for salt contents up to 35 g kg−1 were achieved. The realization was validated by comparison measurements with a hydrostatic weighing apparatus for atmospheric pressure. For high pressures, literature values of seawater compressibility were compared with substitution measurements of the realized apparatus. |
| Databáze: | OpenAIRE |
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