The use of extraction chromatography resins to concentrate actinides and strontium from soil for radiochromatographic analyses
| Autor: | Timothy A. DeVol, J. E. Roane, J. D. Leyba, Robert A. Fjeld |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Strontium
Chromatography Actinoid Series Elements Soil test Chemistry Elution Health Toxicology and Mutagenesis Extraction (chemistry) Ion chromatography chemistry.chemical_element General Medicine Pollution Sensitivity and Specificity Chemistry Techniques Analytical Soil water Environmental Chemistry Soil Pollutants Radioactive Sample preparation Ion Exchange Resins Ion-exchange resin Waste Management and Disposal Environmental Monitoring |
| Zdroj: | Journal of environmental radioactivity. 66(3) |
| ISSN: | 0265-931X |
| Popis: | An analytical technique utilizing selective extractant resins to concentrate strontium and actinides from soil followed by separation with radiochromatography was evaluated. The technique was tested using uncontaminated soil samples spiked with a radionuclide tracer solution that were either microwave-aided acid digested or leached with a strong acid. Extraction of the strontium and actinides from the acidified solution was accomplished using a serial arrangement of Sr–Resin and TRU–Resin columns. The combined eluate solutions from the extraction resins were treated with HNO3 and H2O2 to oxidize residual extractant and eluates prior to separation and analysis of the radionuclides by radiochromatography. Chromatograms obtained with larger soil mass loadings resulted in either incomplete peak resolution of the tracers or had highly variable peak elution times, indicative of an ionic interfering constituent(s). Better separations (e.g., chromatograms that resolved all radioactive constituents) were obtained when the sample mass loading was decreased, but with a concurrent decreased sensitivity for the radionuclides. Elemental analyses of the soil were conducted to provide data on the ionic constituents in unprocessed soil and post-processed soil samples. These results identified aluminum as an interfering contributor to the poor performance exhibited by the radiochromatographic separations. |
| Databáze: | OpenAIRE |
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