1. Magnetic field programming in quadrupole magnetic field-flow fractionation
- Author
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Lee R. Moore, P. Stephen Williams, Francesca Carpino, and Maciej Zborowski
- Subjects
Materials science ,Field (physics) ,Magnetic field-flow fractionation ,02 engineering and technology ,Fractionation ,Physics and Astronomy(all) ,01 natural sciences ,law.invention ,Nuclear magnetic resonance ,law ,Quadrupole magnet ,Electromagnet ,Elution ,010401 analytical chemistry ,Field programming ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Magnetic field ,Magnetic nanoparticles ,Quadrupole ,MgFFF ,Atomic physics ,0210 nano-technology ,Particle chracterization - Abstract
Magnetic field-flow fractionation (MgFFF) is a technique for the separation and characterization of magnetic nanoparticles. It is explained that the analysis of polydisperse samples requires a programmed decay of field and field gradient during sample elution. A procedure for achieving reproducible field decay with asymptotic approach to zero field using a quadrupole electromagnet is described. An example of an analysis of a polydisperse sample under programmed field decay is given.
- Published
- 2010
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