Parameters Affecting Magnetic Field-Flow Fractionation of Metal Oxide Particles

Schunk, T. C.; Gorse, J.; Burke, Michael

doi:10.1080/01496398408060667

Cited by 38 publications

(14 citation statements)

References 7 publications

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“…Therefore, the elution time of each particle is determined by the laminar flow distribution of the medium. Magnetic FFF was first demonstrated by Vickrey and Garcia-Ramirez [2], and Schunk et al used a more conventional FFF channel and an electromagnetic solenoid coil [3]. Split-Flow Thin (SPLITT) fractionation is a close relative of FFF since it applies various external fields and has the same direction of driving force, perpendicular to the flow [4,5].…”

Section: Analytical Separation Techniquesmentioning

confidence: 99%

Magnetophoresis and electromagnetophoresis of microparticles in liquids

Watarai

Suwa

Iiguni

2004

Analytical and Bioanalytical Chemistry

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The magnetic field-induced migration of particles in liquids is a highly-promising technique for the micro-separation analysis of bioparticles, such as cells and large DNA. Here, new methods that make use of magnetophoresis and electromagnetophoresis to induce the migration of microparticles in liquids are briefly reviewed. Magnetic force and Lorentz force are utilized in the new methods. Some typical examples of the use of these methods are described, and the advantages of using a superconducting magnet for them are demonstrated.

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Section: Analytical Separation Techniquesmentioning

confidence: 99%

Magnetophoresis and electromagnetophoresis of microparticles in liquids

Watarai

Suwa

Iiguni

2004

Analytical and Bioanalytical Chemistry

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“…Magnetic FFF, utilizing the magnetic field to create the concentration gradient of the separated sample components across the separation channel, has been studied in only a few works [24][25][26][27]. In this case, the channel was constructed in a conventional way between two parallel planes or a circular Teflon capillary was used.…”

Section: Magnetic Fffmentioning

confidence: 99%

Field-flow fractionation: Analytical and micropreparative methodology

Janča¹

1993

Mikrochim Acta

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Abstract. Since the introduction of the general concept, field-flow fractionation (FFF) was developed to a complex of separation methods that differ by the fundamental processes underlying and accompanying the separation. In this review, the basic principles on which this separation methodology lies are presented, the most important methods and techniques applicable for analytical and preparative fractionations are described, the first approximation theoretical treatment of the separation processes is outlined, and typical applications for analytical and micropreparative purposes are demonstrated. The main goal is to show that FFF represents an interesting and competitive option of the separation methods applicable in analytical chemistry. The existence of some conflicting opinions concerning the theory as well as the experiments does not prohibit the analytical and preparative use of FFF. If not regarded only as a routine analytical tool, it should stimulate the research and development efforts. On the other hand, when used as an analytical tool, even if the approximate theoretical models are not fully supported by the experiments, the correct analytical result can be obtained from FFF (as well as from any other analytical separation method) by using a calibration procedure and an appropriate treatment and interpretation of the raw experimental data.

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“…The technique belongs to a large family of the field-flow fractionation (FFF) analytical techniques, 17–18 here specialized for the characterization of magnetic micro- and nano-particles. 19 The effort in the past was directed towards a programmed field operation to measure the mass of the magnetic species per microparticle and its distribution in the sample.…”

Section: Introductionmentioning

confidence: 99%

A Quantitative Determination of Magnetic Nanoparticle Separation Using On-Off Field Operation of Quadrupole Magnetic Field-Flow Fractionation (QMgFFF)

et al. 2013

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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 larger particle (200 nm v. 90 nm) at the higher flow rate (0.05 mL/min v. 0.01 mL/min) at the highest magnetic field (0.52 T), as expected because of its lower retention parameter. The significance of this approach is a demonstration of a system that is simpler in operation than a programmed field QMgFFF in applications to particle mixtures consisting of two distinct particle fractions. This approach could be useful for detection of unwanted particulate contaminants, especially important in industrial and biomedical applications.

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Parameters Affecting Magnetic Field-Flow Fractionation of Metal Oxide Particles

Cited by 38 publications

References 7 publications

Magnetophoresis and electromagnetophoresis of microparticles in liquids

Magnetophoresis and electromagnetophoresis of microparticles in liquids

Field-flow fractionation: Analytical and micropreparative methodology

A Quantitative Determination of Magnetic Nanoparticle Separation Using On-Off Field Operation of Quadrupole Magnetic Field-Flow Fractionation (QMgFFF)

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