Abstract
Tin has been determined in biological materials by NAA of the γ-emitting 40-min123Sn and 9,7-min125Sn isotopes at the sub-ppm level. For123Sn, samples are wet-ashed after irradiation, whereas to allow fast radiochemistry for125Sn, the samples are dry-ashed prior to the irradiation. Both separation techniques rely on selective solvent extraction of tin(IV) iodide, and NaI(TI) counting. Comparative analyses of several materials by both methods gave good agreement, indicating that tin is not lost on dry-ashing and that simple dissolution of the ash in an HCl−HI mixture is complete. Results by both techniques are presented for the standard materials Bowen's Kale and NBS Orchard Leaves, and for some other materials.
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Byrne, A.R. Neutron activation analysis of tin in biological materials and their ash using123Sn and125Sn. J. Radioanal. Chem. 20, 627–637 (1974). https://doi.org/10.1007/BF02514308
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DOI: https://doi.org/10.1007/BF02514308