Determination of technetium-99 in soils and radioactive wastes using ICP-MS
-
A. Bartošová
,
P. Rajec
Abstract
Three methods have been used for the determination of 99Tc in soils and solid radioactive wastes using 99mTc as a yield monitor. In the method one and three the samples were leached in low concentrated nitric and sulphuric acid. Many contaminants were then co-precipitated with Fe(OH)3 in alkali media and Tc in the supernatant was separated using anion-exchange extraction chromatography. There were made also some studies how to improve the chemical recovery of 99mTc in the process of chromatography. In the method two the sample was ashed and then leached in 8 mol dm−3 HNO3 and after iron precipitation, technetium was separated on chromatographic column. The chemical recovery of 99mTc was optimized in the process of chromatography and leaching. Typical recoveries of technetium determined with 99mTc tracer for all these methods were in the range 39 %–87 %.
The 99Tc activity was measured using proportional low-background beta detector after one week of staying to allow decay of 99mTc activity. 99Tc was also determined by the non-radiometric method using inductively coupled plasma mass spectrometer.
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© 2006 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Chemistry for the design and better understanding of cement-based materials and composites
- Surface modifications of natural clinoptilolite-dominated zeolite for phenolic pollutant mitigation
- Flame retardant property of nanopowder aerosols toward methane
- Trace analysis of lead by anodic stripping voltammetry with collection at interdigitated microelectrodes in small-volume samples
- Investigation of the solid samples evaporation from the auxiliary DC arc discharge in the atomic emission spectroscopy
- Determination of bioavailable iron in noncontaminated Slovak soils by flame atomic absorption spectrometry
- Determination of technetium-99 in soils and radioactive wastes using ICP-MS
- Synthesis and characterization of the rare-earth complexes with salicylic acid
- Spectrophotometric determination of nickel(II) in different samples by complexation with some triazolylazo dyes
- Complexes of biologically important ligands. I. Ternary complexes of nickel(II) comprising 1,10-o-phenanthrolineazosulfonamide derivatives and alkyldithiophosphates
- Effects of Cd(II) and Zn(II) complexes with bioactive ligands on some photosynthesizing organisms
- Efficiency of a fixed-bed and a gas-lift three-column reactor for continuous production of ethanol by pectate-and alginate-immobilized Saccharomyces cerevisiae cells
- Reactions and applications of trans-1,2-epoxy-(Z,E)-cyclododeca-5,9-diene
- Dictionary of Carbohydrates. Edited by P. M. Collins. Second Edition
- In memoriam Associate Professor Ing. Vladimír Daněk, DrSc
