Abstract
The present paper describes radiochemical separation procedures developed for the determination of the elements As, Cr, Hg, Sb and Se in biological reference materials. The methods chosen utilize ion exchange, retention on inorganic exchangers and solvent extraction techniques for the isolation of the elements of interest. These procedures are more rapid than previously used methods, such as distillation and precipitation. As to the sample dissolution, the following procedures were tested using radioactive tracers and reference materials: treatment of the materials in teflon bombs with a mixture of HNO3+H2SO4 or HNO3 only in a normal oven, and with HNO3 in a microwave oven using specially designed digestion bombs.
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V.A. Maihara, M.B.A. Vasconcellos,J. Radioanal. Nucl. Chem., Articles, 132 (1989) 329.
R. Pietra, E. Sabbioni, M. Gallorini, E. Orvini,J. Radioanal. Nucl. Chem., Articles, 102 (1986) 69.
W. Tian, W.D. Ehmann,J. Radioanal. Nucl. Chem., Articles, 89 (1985) 109.
R.R. Greenberg,Anal. Chem., 58 (1986) 2511.
W.C. Cunningham,J. Radioanal. Nucl. Chem., Articles, 113 (1987) 423.
M. Gallorini, R.R. Greenberg, T.E. Gills,Anal. Chem., 50 (1978) 1479.
C.S. Munita, R.M. Abe, L.G. De Andrade E Silva, IPEN Publication 218 (1988) 1–11.
Certificate — Reference Material Simulated Fresh Water IAEA-W-4, May 1985.
H.J.M. Bowen,J. Radioanal. Chem., 19 (1974) 215.
V.A. Maihara, M.B.A. Vasconcellos,J. Radioanal. Nucl. Chem., Articles, 132 (1989) 329.
D. Hoede, H.A. Van Der Sloot,Analyt. Chim. Acta, 111 (1979) 321.
E.S. Gladney,Analyt. Chim. Acta, 118 (1980) 385.
Certificate of Analysis Standard Reference Material 1568, Rice Flour National Bureau of Standards, Washington, D.C., 1978.
Cerificate of Analysis Standard Reference Material 1572, Citrus Leaves, National Bureau of Standard, Washington, D.C., 1982.
Y. Muramatsu, R.M. Parr, IAEA/RL/128, December 1985.
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Vasconcellos, M.B.A., Maihara, V.A., Favaro, D.I.T. et al. Radiochemical separation methods for the determination of some toxic elements in biological reference materials. Journal of Radioanalytical and Nuclear Chemistry Letters 153, 185–199 (1991). https://doi.org/10.1007/BF02176874
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DOI: https://doi.org/10.1007/BF02176874