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Identification of137Cs in an individual microparticle by laser desorption/ionization ion trap mass spectrometer

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Abstract

The detection of radiocesium in microparticles was performed by using an ion trap mass spectrometer coupled with laser desorption and ionization. Pulsed laser desorbed particle and the resulted ions were analyzed by an ion trap mass analyzer. The presence of radiocesium, especially about137Cs, in microparticles was verified by single as well as successive particle analysis. The detection limit was reached to ≈ag/particle level with a signal-to-background ratio of 4. The inhomogeneous distribution of particle size and the irregular shapes of particle limit the quantitative evaluation of137Cs concentration in the microparticle. But this high sensitivity allows to monitor directly the radiocesium from small amounts of a microparticle sample.

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Authors and Affiliations

  1. Laboratory for Quantum Optics, Korea Atomic Energy Research Institute, 305-600, Taejon, Korea

    KwangHee Hong, KyuSeok Song, HyungKi Cha, Mo Yang & JongMin Lee

  2. Environmental Radiation Assessment Division, Korea Atomic Energy Research Institute, 305-600, Taejon, Korea

    ChangWo Lee

  3. Department of Chemistry, Chungnam National University, 305-764, Taejon, Korea

    GaeHo Lee

Authors
  1. KwangHee Hong
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  2. KyuSeok Song
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  3. HyungKi Cha
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  4. Mo Yang
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  5. JongMin Lee
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  6. ChangWo Lee
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  7. GaeHo Lee
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Hong, K., Song, K., Cha, H. et al. Identification of137Cs in an individual microparticle by laser desorption/ionization ion trap mass spectrometer. J Radioanal Nucl Chem 241, 533–541 (1999). https://doi.org/10.1007/BF02347209

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  • DOI: https://doi.org/10.1007/BF02347209

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