Detection of decontamination solution chelating agents using ion selective coated-wire electrodes
- Arizona Univ., Tucson, AZ (United States)
This thesis explores feasibility of using coated-wire electrodes to measure chelating agent concentration. Chelating agents are often found in radioactive decontamination solutions because they aid in the removal of radionuclides from contaminated surfaces by increasing their solubility. However, this characteristic will also enhance the mobility of the radionuclide and thus its transport out of a waste disposal site. Coated-wire ion selective electrodes, based on a polyvinylchloride membrane using dioctylphthalate as a plasticizer and dinonylnaphthalenesulfonic acid as a counterion, were constructed for five commonly utilized chelating agents (ethylenediaminetetracetic acid (EDTA), nitrilotriacetic acid (NTA), citric acid, oxalic acid and tartaric add). The EDTA and NTA electrodes` calibration characteristics exhibited acceptable behavior in pure standard solutions. From data obtained while using the EDTA and NTA electrodes in a cement environment, further research needs to be done in the area of ion interference.
- Research Organization:
- Oak Ridge Inst. for Science and Education, TN (United States); Arizona Univ., Tucson, AZ (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76OR00033
- OSTI ID:
- 10187899
- Report Number(s):
- DOE/OR/00033--T538; ON: DE94000832
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102
560180
61 RADIATION PROTECTION AND DOSIMETRY
CALIBRATION
CHELATING AGENTS
CHEMICAL AND SPECTRAL PROCEDURES
CITRIC ACID
COATINGS
EDTA
ELECTRODES
ION-SELECTIVE ELECTRODES
LIQUID WASTES
NTA
OXALIC ACID
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION PROTECTION PROCEDURES
RADIOACTIVE WASTES
TARTARIC ACID
WASTE MANAGEMENT