Development of a high temperature pH electrode for geothermal fluids. Final report, Task 1

Technical Report · Wed Apr 01 00:00:00 EST 1981

DOI:https://doi.org/10.2172/6990011· OSTI ID:6990011

Niedrach, L W; Stoddard, W H

There has been no serious application of pH measurements above 150/sup 0/C stemming from the fact that there have been no practical probes available that are capable of operation under the required conditions of temperature and pressure. Recently, a new approach to such measurements was developed in which an oxygen ion conducting ceramic membrane (e.g., stabilized zirconia) is being employed in a sensor somewhat analogous to the glass electrode. The new sensor retains the specificity of the glass electrode, is equally insensitive to interference from redox active species, and possesses markedly superior resistance to attack by aqueous media at high temperatures. The status of the new sense at the inception of the contract is summarized and plans for the first year's investigation are outlined.

• Research Organization: General Electric Co., Schenectady, NY (USA). Corporate Research and Development Dept.
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6990011
• Report Number(s): PNL-3857; ON: DE84012337
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
GEOTHERMAL FLUIDS
PH VALUE
MEASURING INSTRUMENTS
CALIBRATION
ELECTRODES
HIGH TEMPERATURE
FLUIDS
Geothermal Legacy
150303* - Geothermal Exploration & Exploration Technology- Exploratory Drilling & Well Logging
150302 - Geothermal Exploration & Exploration Technology- Geochemical Techniques & Surveys