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Low level detection of 135Cs and 137Cs in environmental samples by ICP-MS

  • M. LiezersEmail author
  • O. T. FarmerIII
  • M. L. Thomas
Article

Abstract

The measurement of fission product cesium isotopes 135Cs and 137Cs at low femtogram (fg) 10−15 levels in ground water by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) is reported. To eliminate the natural barium isobaric interference on the cesium isotopes, in-line chromatographic separation of the cesium from barium was performed followed by high sensitivity ICP-MS analysis. A high efficiency desolvating nebulizer system was employed to maximize ICP-MS sensitivity ~10 cps/fg. The three sigma detection limit for 135Cs was 2 fg/mL (0.1 μBq/mL) and for 137Cs 0.9 fg/mL (0.0027 Bq/mL) measured from the standard with analysis time of less than 30 min/sample. Cesium detection and 135/137 isotope ratio measurement at very low femtogram levels using this method in a spiked ground water matrix is also demonstrated.

Keywords

Isotope ratio Cesium Environmental Chromatography Gamma spectrometry Quadrupole ICP-MS 

Notes

Acknowledgements

Thanks to Shannon M. Shulte, Paula P. Bachelor and Elwood Lepel for the gamma spectrometry measurements.

References

  1. 1.
    Miley HS, Bowyer SM, Hubbard CW, Mckinnon AD, Perkins RW, Thompson RC, Warner RA (1998) J Radioanal Nucl Chem 235(1–2):83CrossRefGoogle Scholar
  2. 2.
    McIntyre JI, Abel KH, Bowyer TW, Hayes JC, Heimbigner TR, Panisko ME, Reeder PL, Thompson RC (2001) J Radioanal Nucl Chem 248(3):629CrossRefGoogle Scholar
  3. 3.
    Meeks AM, Giaquinto JM, Keller JM (1998) J Radioanal Nucl Chem 234(1–2):131CrossRefGoogle Scholar
  4. 4.
    Song M, Probst TU, Berryman NG (2001) Fresenius J Anal Chem 370:744CrossRefGoogle Scholar
  5. 5.
    Taylor VF, Evans RD, Cornett RJ (2008) J Environ Radioact 99:109CrossRefGoogle Scholar
  6. 6.
    Epov VN, Taylor VF, Lariviere D, Evans RD, Cornett RJ (2003) J Radioanal Nucl Chem 258(3):473CrossRefGoogle Scholar
  7. 7.
    Product Manual, IONPAC fast cation 1 column, Dionex Corporation, Document No. 32952, Rev. 6, 7 November 2002Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  1. 1.Pacific Northwest National LaboratoryRichlandUSA

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