Radiochemical methodologies applied to determination of zirconium isotopes in low-level waste samples from nuclear power plants
- 219 Downloads
The 93Zr determination in low-level radioactive wastes generated at nuclear power plants is an important issue for waste disposal purpose. This paper describes an analytical methodology developed for 93Zr determination based on selective separation using extractive resins associated with inductively coupled plasma mass spectrometry (ICP-MS) and liquid scintillation counting (LSC) measurements. The 93Zr results obtained for waste samples were in a good agreement for both techniques and the detection limits of 0.045 μg L−1 and 0.05 Bq L−1 were obtained for ICP-MS and LSC techniques respectively.
KeywordsZirconium Selective separation method LSC ICP-MS
The authors are very grateful to Eletrobrás Termonuclear, CDTN and SCA/CNRS for its collaboration and to the work supported by CNPq.
- 1.Electric Power Research Institute (1996) Low-level waste characterization guidelines. EPRI Pleasant Hill (EPRI-TR-1072)Google Scholar
- 2.IAEA (2009) Nuclear Energy Series Determination and use of scaling factors for waste characterization in nuclear power plants. IAEA, Vienna (No. NW-T-1.18)Google Scholar
- 3.Environmental Protection Agency (2006) Inventory of radiological methodologies for sites contaminated with radioactive materials. Montgomery, US (EPA 402-R-06-007)Google Scholar
- 4.Vértes A, Nagy S, Klencsár Z, Molnár GL (2003) Handbook of nuclear chemistry, vol 2. Kluwer Academic Publishers, DordrechtGoogle Scholar
- 5.Cassete P et al (2009) Determination of 93Zr decay scheme and half-life. Appl Radiat Isot 56:41–46Google Scholar
- 9.Warwick PE et al (2006) Environmental Radiochemical Analysis. In: The proceedings of the 10th International Symposium on Environmental Radiochemical Analysis Held in Oxford, UK. The Royal Society of Chemistry, London, pp 169–175Google Scholar
- 12.U.S. EPA Method 200.8 (1994) Determination of trace elements in waters and wastes by ICP-MS, Revision 5.4, 1994: http://water.epa.gov/scitech/methods/cwa/bioindicators/upload/2007_07_10_methods_method_200_8.pdf