Determination of the Rayleigh Ratio with an Uncertainty Analysis by Static Light-Scattering Measurements of Certified Reference Materials for Molecular Weight

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  • TAKAHASHI Kayori
    National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST)
  • TAKANO Atsushi
    Department of Applied Chemistry, Nagoya University
  • KINUGASA Shinichi
    National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST)
  • SAKURAI Hiromu
    National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST)

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<p>The most important parameter for light-scattering measurements in the Rayleigh scattering region is the Rayleigh ratio, which is necessary to obtain the absolute scattered light intensity from the relative scattered light intensity. The absolute scattered light intensity is directly related to the molar masses of polymers, colloids, biomolecules, and the like. A new Rayleigh ratio was determined by measuring static light scattering from certified reference materials with highly accurate certified values of the molecular weight determined by several other techniques, such as MALDI-TOF mass spectrometry or size-exclusion chromatography. The new Rayleigh ratio can be used for evaluating the uncertainty of the molecular weight of polymers and macromolecules, as measured by light scattering.</p>

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  • Analytical Sciences

    Analytical Sciences 35 (9), 1045-1051, 2019-09-10

    社団法人 日本分析化学会

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