期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 311, 期 1, 页码 383-387出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2006.11.162
关键词
field-flow fractionation; magnetic field-flow fractionation (MgFFF); magnetic nanoparticles; nanoparticle characterization; quadrupole magnetic field
Quadrupole magnetic field-flow fractionation (MgFFF) is an analytical separation and characterization technique for nano- and micro-sized magnetic particles. It fractionates particles according to their content of magnetite or other magnetic material. The potential and versatility of MgFFF for separation and characterization of magnetic nanoparticles, such as those used for immunospecific labeling of biological cells for magnetic separation, is demonstrated. A broadly polydisperse sample of dextran-coated magnetite nanoparticles was eluted under programmed field decay conditions, and quantitative data concerning the distribution of magnetite content were determined from the elution profile using a data reduction method. (C) 2006 Elsevier B.V. All rights reserved.
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