Mass Spectrometry Letters

Korean Society for Mass Spectrometry (한국질량분석학회)
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Determination of the Concentration and Isotope Ratio of Uranium in Soil and Water by Thermal Ionization Mass Spectrometry

  • Park, Jong-Ho (Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute) ;
  • Park, Sujin (CKD Research Institute) ;
  • Song, Kyuseok (Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute)
  • Received : 2013.12.05
  • Accepted : 2013.12.10
  • Published : 2014.03.24
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Abstract

Thermal ionization mass spectrometry (TIMS) was used to determine the concentration and isotope ratio of uranium contained in samples of soil and groundwater collected from Korea. Quantification of uranium in ground water samples was performed by isotope dilution mass spectrometry. A series of chemical treatment processes, including chemical separation using extraction chromatography, was applied to the soil samples to extract the uranium. No treatments other than filtration were applied to the groundwater samples. Isotopic analyses by TIMS showed that the isotope ratios of uranium in both the soil and water samples were indistinguishable from those of naturally abundant uranium. The concentration of uranium in the groundwater samples was within the U.S. acceptable standards for drinking water. These results demonstrate the utility of TIMS for monitoring uranium in environmental samples with high analytical reliability.

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