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Showing 1 to 13 of 13 for “"field flow fractionation"”.
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Advancing thermal field-flow fractionation for industrial polymer characterization
Field-flow fractionation (FFF) is a family of techniques known for its open channel design and ability to separate polymers and colloids. The applied field in an FFF technique determines the physiochemical properties by which the separation occurs. A well-established theory relates retention time …
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Comparison of Two Separation Methods for Biological Particles: Field-Flow Fractionation (FFF) and Sucrose Density Gradients
<p>Sucrose gradient centrifugation and Field-flow fractionation (FFF) are two different particle separation methods that overcome the problems of similar size microorganisms clumping together during standard filtration methods. FFF separates particles based on size and density via the parabolic …
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Development of thermal field-flow fractionation for the characterization of hybrid nanoparticles and polymers with complex architecture
Field-flow fractionation (FFF) is a family of analytical techniques designed for the separation of macromolecules and colloids on the nanometer to micron scale. The well-established theory governing FFF separations permits physiochemical properties to be calculated from measured analyte retention …
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Development and application of flow field-flow fractionation-inductively coupled plasma-mass spectrometry for analysis of uranium speciation and transport in the presence of nanoparticulate ligands
Includes bibliographical references (pages 187-203).
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Modeling and simulation of micro/nano-rod distribution in micro channel flows
… of a typical nanorod particle in microscale flows was theoretically investigated, considering the effect of the wall on the rotational and translation motions of the non-spherical particle. Initially, a systematic method using Brownian dynamics simulation of the rotational motion of nanorod …
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"Chasing a ghost": Addressing the opalescence/aggregation relationship of an IgG 1 antibody
… light scattering and separated by asymmetric flow field flow fractionation. When the salt dependence was examined, any structural changes were characterized using differential scanning calorimetry, circular dichroism and fluorescence, while the association state and temperature dependence was …
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Total N-nitrosamine Precursor Adsorption with Carbon Nanotubes: Elucidating Controlling Physiochemical Properties and Developing a Size-Resolved Precursor Surrogate
… Precursors were analyzed with asymmetric flow field-flow fractionation (AF4) with inline fluorescence detection (FLD) and whole water fluorescence excitation-emission matrices (EEMs). TONO precursor surrogates were discovered, capable of predicting changes in TONOFP in WWTP samples that …
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Nanoparticle - Heavy Metal Associations in Riverbed Sediments
… electron microscopy (aTEM) and asymmetric flow field flow fractionation (aFlFFF) coupled to both multi-angle laser light scattering (MALLS) and high resolution-inductively coupled plasma mass spectroscopy (HR-ICPMS). Riverbed sediment samples were taken from the Clark Fork River in Montana, …
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Effects of nanosilver and silver nitrate exposure on fathead minnows (Pimephales promelas) and zebrafish (Danio rerio)
… of AgNP exposure. To understand this further, Field-Flow-Fractionation coupled to ICP-MS (FFF-ICP-MS) was utilized to characterize particles in GI tract and gill tissue. Particles were sized between 26-70 nm in GI and 27-30 nm in gill. FHM gill microarrays were performed to compare alterations …
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Abtrennung und Charakterisierung von Polyelektrolyt-modifizierten Nanopartikeln
Gegenstand der Dissertation ist die größen- und eigenschaftsoptimierte Synthese und Charakterisierung von anorganischen Nanopartikeln in einer geeigneten Polyelektrolytmodifizierten Mikroemulsion. Das Hauptziel bildet dabei die Auswahl einer geeigneten Mikroemulsion, zur Synthese von kleinen, …
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The role of colloidal material in the fate and cycling of trace metals in estuarine and coastal waters
… weight) fractions were separated by cross-flow filtration (CFF). Filtration artefacts (conventional and CFF) involving filter blockage and colloid aggregation/disaggregation transformations were minimised through appropriate protocols.65Zn equilibration experiments were carried out with …
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New Double-Responsive Micelles of Block Copolymers Based on N,N-Diethylacrylamide: Synthesis, Kinetics, Micellization, and Application as Emulsion Stabilizers
… of methods, including DLS, TEM and Asymmetric Flow Field-Flow Fractionation (AF-FFF).
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Smart organic-inorganic nanohybrids of functionalized silsesquioxane nanoparticles
… scattering titration measurements and asymmetric flow field-flow fractionation experiments. Fourier-transform infrared spectroscopy and dialysis measurements with fluorescently labelled silsesquioxane nanoparticles confirmed the nanohybrid formation over a relatively wide range in pH. Cryogenic …