Determination of stable and long-lived radioactive halides using high resolution ICP-MS
- Zentralabteilung fuer Chemische Analysen, Juelich (Germany); and others
Routine control of radioactive waste demands efficient techniques which allow many samples to be analyzed per day with high precision and accuracy. ICP-MS is well established as a trace analytical method and permits the extremely sensitive and fast detection of stable and long-lived radioactive nuclides. Though ICP-MS is rarely used for the determination of halides, the author`s investigation shows that a sufficient low detection limit can be achieved (e.g., for the declaration of {sup 129}I in radioactive waste samples.). In this work, a double focusing mass spectrometer with an ICP ion source ({open_quotes}ELEMENT{close_quotes}, Finnigan MAT) is used for the determination of halides (Cl, Br and I) in biological standard reference materials as well as {sup 129}I in low-activity radioactive waste samples. A method was developed for the determination of halides in the {mu}g/mL-range for bromine and chlorine and the ng/mL-range for iodine including isotopic analysis of stable and radioactive halides. Possible interferences of atomic ions with other ions (e.g., {sup 129}I{sup +} with {sup 129}Xe{sup +}) were investigated and possibilities for correction of these interferences will be discussed. To achieve a lower detection limit a new method for iodine sample introduction was developed. The iodide ion in an aqueous sample is oxidized to elemental iodine and introduced directly into the ICP by a special introduction system. Iodine ({sup 127}I or {sup 129}I) can be measured by this new method even in the lower ng/mL-range. The studies were extended to include the determination of bromine and chlorine.
- OSTI ID:
- 273581
- Report Number(s):
- CONF-960113-; TRN: 96:002920-0041
- Resource Relation:
- Conference: 9. biennial Winter conference on plasma spectrochemistry, Fort Lauderdale, FL (United States), 8-13 Jan 1996; Other Information: PBD: 1996; Related Information: Is Part Of 1996 Winter conference on plasma spectrochemistry; PB: 378 p.
- Country of Publication:
- United States
- Language:
- English
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