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U.S. Department of Energy
Office of Scientific and Technical Information

Method of determining pH by the alkaline absorption of carbon dioxide

Patent ·
OSTI ID:7310135
A method is described for measuring the concentration of hydroxides in alkaline solutions in a remote location using the tendency of hydroxides to absorb carbon dioxide. The method includes the passing of carbon dioxide over the surface of an alkaline solution in a remote tank before and after measurements of the carbon dioxide solution. A comparison of the measurements yields the absorption fraction from which the hydroxide concentration can be calculated using a correlation of hydroxide or pH to absorption fraction. 2 figs.
DOE Contract Number:
AC09-89SR18035
Assignee:
PTO; EDB-94-090533
Patent Number(s):
US 5153141; A
Application Number:
PPN: US 7-754840
OSTI ID:
7310135
Country of Publication:
United States
Language:
English