Evaluation of chloride-ion-specific electrodes as in situ chemical sensors for monitoring total chloride concentration in aqueous solutions generated during the recovery of plutonium from molten salts used in plutonium electrorefining operations

Technical Report · Thu Oct 01 00:00:00 EDT 1992

OSTI ID:6916047

Smith, W H

Two commercially available chloride-ion-specific electrodes (CLISEs), a solid-state type and a membrane type, were evaluated as potential in situ chemical sensors for determining total chloride ion concentration in mixed sodium chloride/potassium chloride/hydrochloric acid solutions generated during the recovery of plutonium from molten salts used in plutonium electrorefining operations. Because the response of the solid-state CLISE was closer than was the response of the membrane-type CLISE to the theoretical response predicted by the Nernst equation, the solid-state CLISE was selected for further evaluation. A detailed investigation of the characteristics of the chloride system and the corresponding CLISE response to concentration changes suggested four methods by which the CLISE could be used either as a direct, in situ sensor or as an indirect sensor through which an analysis could be performed on-line with a sample extracted from the process solution.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6916047
• Report Number(s): LA-12246; ON: DE93002158
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
CHLORIDES
ION SELECTIVE ELECTRODE ANALYSIS
PLUTONIUM
ELECTROREFINING
HYDROCHLORIC ACID
ION-SELECTIVE ELECTRODES
MOLTEN SALTS
POTASSIUM CHLORIDES
PROCESS SOLUTIONS
PYROCHEMICAL REPROCESSING
SODIUM CHLORIDES
ACTINIDES
ALKALI METAL COMPOUNDS
CHEMICAL ANALYSIS
CHLORINE COMPOUNDS
DISPERSIONS
ELECTRODES
ELECTROLYSIS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LYSIS
METALS
MIXTURES
POTASSIUM COMPOUNDS
PROCESSING
REFINING
REPROCESSING
SALTS
SEPARATION PROCESSES
SODIUM COMPOUNDS
SOLUTIONS
TRANSURANIUM ELEMENTS
400102* - Chemical & Spectral Procedures
050800 - Nuclear Fuels- Spent Fuels Reprocessing
400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials