The Study of Liquid Suspensions of Iron Oxide Particles with a Magnetic Field-Flow Fractionation Device

Abstract

Abstract A magnetic field-flow fractionation (magnetic FFF) device was used to determine the effects of a magnetic field upon a suspension of iron oxide particles in acetonitrile. The effects of surface modifiers on the stability of the suspension are discussed in terms of changes in retention, peak shape, and peak area. Particle elution was monitored by the use of a UV-visible spectrophotometer fitted with a flowcell.