Sorption study of strontium onto hydrated cement phases using a sequential desorption method
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T. Iwaida
We studied the sorption behavior of Sr onto calcium-silicate-hydrates (C-S-H), calcium-aluminate-hydrates ettringite (AFt), monosulphate (AFm), and hydrogarnet (C3AH6) by applying a sequential desorption method. The results showed that:
- The distribution coefficients (Kd) of Sr sorption onto C-S-H increased with decreasing Ca/Si ratios of C-S-H. This Kd change is explained with the zeta potentials of C-S-H at various Ca/Si ratios and with the change of surface functional group,
- Sr is sorbed on C-S-H through plural sorption forms. The observation that some Sr is desorbed by EDTA and nitric acid suggests that a replacement of Ca with Sr takes place in the C-S-H structure, and
- Sr is structurally incorporated into AFt, AFm, and C3AH6.
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Artikel in diesem Heft
- Cross-sections and linear momentum transfer in α-induced reactions on 85Rb
- Non-destructive and radiochemical determination of the neutron-induced production cross section of I-129 from Te and other neutron-induced cross sections on Te at 14.7 MeV
- Contribution of the concept of simple solutions to calculation of the density of ternary and quaternary solutions of thorium(IV) or plutonium(IV) nitrate: An(NO3)4/UO2(NO3)2/HNO3/H2O
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- Improvement in radiochemical and γ-counting procedures for the determination of 234Th in seawater
- Secondary ion mass spectrometry measurements of volcanic tuffs containing radionuclides from underground nuclear tests
- Electrochemical deposition of carrier-free radionuclides
- Sorption study of strontium onto hydrated cement phases using a sequential desorption method
- Trace detection of 41Ca in nuclear reactor concrete by diode-laser-based resonance ionization mass spectrometry
- Preparation of 188Re-lanreotide peptide and its quality control
- Comment on "Behaviour of europium(III) and its hydroxo and carbonate complexes in a solvent extraction system with HDBM in 2 M NaCl at 303 K" by M. Jiménez-Reyes, M. Solache-Rios and A. Rojas-Hernández
