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Assay of89Sr in plant and soil samples by liquid scintillation counting

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Abstract

The Sr in plant and soil samples is converted to SrCl2 by digestion with HNO3 and HCl. The recovery of this digestion is 90% with a reproducibility of about 4%. SrCl2 is solubilized in toluene by forming a complex with di-n-propyl phosphate (DNP). The DNP-toluene reagent was found to be a highly effective carrier of SrCl2, and to have properties suitable for highly efficient liquid scintillation counting. An efficiency of 95% was obtained for89Sr counting. The factors affecting the utility of the method are discussed.

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Author notes

  1. J. E. Hardcastle

    Present address: Department of Chemistry, Texas Woman's University, Denton, Texas, (USA)

Authors and Affiliations

  1. Department of Agricultural Chemistry and Soils, University of Arizona, Tucson, Arizona, (USA)

    J. E. Hardcastle, W. H. Fuller & R. J. Hannapel

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  1. J. E. Hardcastle
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  2. W. H. Fuller
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  3. R. J. Hannapel
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Hardcastle, J.E., Fuller, W.H. & Hannapel, R.J. Assay of89Sr in plant and soil samples by liquid scintillation counting. J. Radioanal. Chem. 13, 141–147 (1973). https://doi.org/10.1007/BF02514117

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  • DOI: https://doi.org/10.1007/BF02514117

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