Determination of Free Base in Aluminate-Carbonate Solutions by Standard Addition Method

摘要

Alkaline waste solutions from the 200-Area separations processes are analyzed for sodium hydroxide, sodium aluminate, and sodium carbonate by a complicated titration procedure that requires about two hours. Frequently, however, only the sodium hydroxide concentration (i.e., free base) is required. For example, free base is measured to confirm that acidic wastes are neutralized or to verify that stored waste meets technical standards. This memorandum describes a new fifteen-minute standard addition procedure that determines free base in the presence of aluminate and carbonate. (ERA citation 10:012442)