The effect of parameter uncertainty on blind prediction of Np(V) sorption onto hematite using the Diffuse Double Layer Model
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Anke Richter
Summary
The aim of this work is to illustrate the effect of parameter uncertainty (protolysis constants) in surface complexation modeling. As example the blind prediction of Np(V) sorption onto hematite was selected, applying the Diffuse Double Layer Model (DDLM).
None of the pK parameter sets randomly generated within a space of two standard deviations did deliver unacceptable predictions for the distribution coefficients. Thus, the formally large spreading of the pK values as extracted from literature (even after normalization and extrapolation to infinite dilution) is actually not critical. For well-defined mineral systems, provided a suitable database is accessible, the DDLM approach seems to be promising.
© Oldenbourg Wissenschaftsverlag, München
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Articles in the same Issue
- Preface: The Sixth International Conference on Nuclear and Radiochemistry (NRC-6)
- Target dependence of beryllium fragment production in neutron- and alpha-induced nuclear reactions at intermediate energies
- Influence of reaction channel on the isomeric cross-section ratio
- Search for α-decay of 229mTh produced from 229Ac β-decay following 232Th(γ, p2n) reaction
- Search for the decay of 229mTh by photon detection
- Energy shift of electronic X-rays emitted from pionic atoms
- Chemical studies on rutherfordium (Rf) at JAERI
- The effect of parameter uncertainty on blind prediction of Np(V) sorption onto hematite using the Diffuse Double Layer Model
- Influence of β radiation on UO2 dissolution at different pH values
- Development of a gas-jet-coupled multitarget system for multitracer production
- Determination of nuclear constants of reactions induced on zinc by short irradiations with the epithermal and fast components of a reactor neutron spectrum
- Fission spectrum averaged cross section measurements of some neutron threshold reactions of relevance to medical radionuclide production
- Experimental measurements and nuclear model calculations on the excitation functions of natCe(3He, xn) and 141Pr(p, xn) reactions with special reference to production of the therapeutic radionuclide 140Nd
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- A no-carrier-added 72Se/72As radionuclide generator based on solid phase extraction
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- Tumor cell and tumor vasculature targeted liposomes for neutron capture therapy
- Chemical stabilization of recoil 56Mn in MnSO4-KClO4 mixed crystals following (n, γ) process
- Investigation on the chemical behaviour of a crown ether irradiated in high gamma radiation fields
- Sorption of 99MoO42- ions on commercial hydrotalcites
- Radiochemical determination of 41Ca in nuclear reactor concrete
- Ion chromatographic analysis of aqueous iodine species by conductivity and radioactivity measurements
- Determination of actinides and 90Sr in spent ion exchange resins
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