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1960•Acta chemica Scandinavica/Acta chemica Scandinavica. B, Organic chemistry and biochemistry/Acta chemica Scandinavica. A, Physical and inorganic chemistry/Acta chemica Scandinavica. Series B. Organic chemistry and biochemistry/Acta chemica Scandinavica. Series A, Physical and inorganic chemistryOpen access

On the Stability of Nitrate and Chloride Complexes of Plutonium (IV).

Ingmar Grenthe, Bertil Norén, Göran Kull, Bengt Lindberg

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Abstract

The nitrate and chloride complexes of Pu/sup 4+/ were studied in an acid perchlorate medium of ionic strength 1 = 4M at a temperature of 20 deg C by using the cation-exchanger method of Fronaeus. The calculation method was extended to systems of the type M/sup 4+/-A-, where the central ion, the first, second, and third complexes can be sorbed on the ion exchanger. The complexity constants obtained for the nitrate system were beta /sub 1/ = 5.5 plus or minus 0.2 M/ sup -1/; beta /sub 1/ = 23.5 plus or minus 1 M/sup -2/ s, and beta /sub 3/ = 15 plus or minus 10 M/sup -3/ and, for the chioride system, beta /sub 1/ = 1.4 plus or minus 0.2 M/sup -/ s/sup 1/ beta /sub 2/ = 1.2 M/sup -2/, and beta / sub 3/ = 0.1 plus or minus 0.1 M/sup -3/. (auth)

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The nitrate and chloride complexes of Pu/sup 4+/ were studied in an acid perchlorate medium of ionic strength 1 = 4M at a temperature of 20 deg C by using the cation-exchanger method of Fronaeus. The calculation method was extended to systems of the type M/sup 4+/-A-, where the central ion, the first, second, and third complexes can be sorbed on the ion exchanger. The complexity constants obtained for the nitrate system were beta /sub 1/ = 5.5 plus or minus 0.2 M/ sup -1/; beta /sub 1/ = 23.5 plus or minus 1 M/sup -2/ s, and beta /sub 3/ = 15 plus or minus 10 M/sup -3/ and, for the chioride system, beta /sub 1/ = 1.4 plus or minus 0.2 M/sup -/ s/sup 1/ beta /sub 2/ = 1.2 M/sup -2/, and beta / sub 3/ = 0.1 plus or minus 0.1 M/sup -3/. (auth)

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The nitrate and chloride complexes of Pu/sup 4+/ were studied in an acid perchlorate medium of ionic strength 1 = 4M at a temperature of 20 deg C by using the cation-exchanger method of Fronaeus. The calculation method was extended to systems of the type M/sup 4+/-A-, where the central ion, the first, second, and third complexes can be sorbed on the ion exchanger. The complexity constants obtained for the nitrate system were beta /sub 1/ = 5.5 plus or minus 0.2 M/ sup -1/; beta /sub 1/ = 23.5 plus or minus 1 M/sup -2/ s, and beta /sub 3/ = 15 plus or minus 10 M/sup -3/ and, for the chioride system, beta /sub 1/ = 1.4 plus or minus 0.2 M/sup -/ s/sup 1/ beta /sub 2/ = 1.2 M/sup -2/, and beta / sub 3/ = 0.1 plus or minus 0.1 M/sup -3/. (auth)

Key concepts: Chemistry, Plutonium, Nitrate, Chloride, Inorganic chemistry, Radiochemistry, Environmental chemistry, Nuclear chemistry

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