Abstract:Quadrupole Magnetic Field-Flow Fractionation (QMgFFF) is a technique for
characterization of sub-micrometer magnetic particles based on their retention
in the magnetic field from flowing suspensions. Different magnetic field
strengths and volumetric flow rates were tested using on-off field application
and two commercial nanoparticle preparations that significantly differed in
their retention parameter, λ (by nearly 8-fold). The fractograms showed
a regular pattern of higher retention (98.6% v. 53.3%) for the
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