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Neutron Polarization Analysis for Biphasic Solvent Extraction Systems



Ryuhei Motokawa, Hitoshi Endo, Michihiro Nagao, William T. Heller


We performed neutron polarization analysis (NPA) of extracted organic phases containing complexes, comprised of Zr(NO3(4 and tri-n-butyl phosphate (TBP), to decompose the intensity distribution of small-angle neutron scattering (SANS) into the coherent and incoherent scattering components. The intensity of coherent scattering containing structural information and incoherent scattering compete over a wide range of magnitude of scattering vector, q, when q/q} range is larger than or around q 1/R with the size of scatterer, R. Therefore, it is important to determine the incoherent scattering intensity exactly to conduct accurate structural analysis of SANS data for R is small such as the extracted coordination species. Although NPA is the best method for evaluating the incoherent scattering component and providing certain coherent scattering in SANS, this method has not been used frequently in SANS data analysis owing to technical difficulties so far. In this study, we have successfully demonstrated that experimental determination of incoherent scattering using NPA is suitable for sample systems containing a small scatterer with a weak coherent scattering intensity, such as extracted complexes in biphasic solvent extraction system.
Solvent Extraction and Ion Exchange


Neutron polarization analysis, Solvent extraction, Tri-n-butyl phosphate


Motokawa, R. , Endo, H. , Nagao, M. and Heller, W. (2016), Neutron Polarization Analysis for Biphasic Solvent Extraction Systems, Solvent Extraction and Ion Exchange, [online], (Accessed May 30, 2024)


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Created June 15, 2016, Updated October 12, 2021