Results 261 to 270 of about 35,272 (308)

Optimisation of asymmetrical flow field flow fractionation for environmental nanoparticles separation

Journal of Chromatography A, 2008
The fractionation of natural nanoparticles by Asymmetrical Flow Field Flow Fractionation (As-Fl-FFF) was optimised by considering the following operating conditions: ionic strength, surfactant concentration and crossflow rate. The method performances such as fractionation recovery and fractionation efficiency were evaluated on a stable solution of ...
S, Dubascoux, F, Von Der Kammer, I, Le Hécho, M Potin, Gautier, G, Lespes   +4 more
openaire   +2 more sources

Cytochrome c?dimyristoylphosphatidylglycerol interactions studied by asymmetrical flow field-flow fractionation

Analytical and Bioanalytical Chemistry, 2004
Lipid membranes are well recognized ligands that bind peripheral and integral proteins in a specific manner and regulate their function. Cytochrome c (cyt c) is one of the partner peripheral protein that binds to the lipid membranes via electrostatic and hydrophobic interactions.
Gebrenegus, Yohannes, Susanne K, Wiedmer, Esa K J, Tuominen, Paavo K J, Kinnunen, Marja-Liisa, Riekkola   +4 more
openaire   +2 more sources

Flow optimisations with increased channel thickness in asymmetrical flow field-flow fractionation

Journal of Chromatography A, 2018
Retention in flow field-flow fractionation (flow FFF) is generally governed by the combination of crossflow and migration flowrates. Especially for an asymmetrical flow FFF (AF4) channel in which the channel-inlet flow is divided into crossflow and outflow, the separation of low-molecular-weight proteins or macromolecules requires a relatively high ...
Joon Seon Yang, Myeong Hee Moon
openaire   +2 more sources

Optimization of asymmetrical flow field-flow fractionation (AF4)

LC GC Europe, 2010
Asymmetrical flow field-flow fractionation (AF4) can be used on a routine basis to separate high-molecular-weight compounds as an alternative to size-exclusion chromatography (SEC), but the principle of separation is very different and a different approach is required for optimization.
Qureshi, R.N., Kok, W.T.
openaire   +1 more source

Retention ratio and nonequilibrium bandspreading in asymmetrical flow field-flow fractionation

Analytical and Bioanalytical Chemistry, 2015
In asymmetrical flow field-flow fractionation (As-FlFFF), only the membrane-covered accumulation wall is permeable to fluid; the opposite channel wall is impermeable. Fluid enters the channel at the inlet and exits partly through the membrane-covered accumulation wall and partly through the channel outlet.
openaire   +2 more sources

Field-Flow Fractionation with Asymmetrical Electroosmotic Flow. II. Charged Particles

Journal of Liquid Chromatography & Related Technologies, 1997
The study of field-flow fractionation (FFF) with asymmetrical electroosmotically driven flow is extended to the case of charged sample particles. In this case, field-flow fractionation is combined with capillary zone electrophoresis in the same flat FFF channel.
V. P. Andreev, Y. V. Stepanov
openaire   +1 more source

Factors affecting measurement of channel thickness in asymmetrical flow field-flow fractionation

Journal of Chromatography A, 2015
Asymmetrical flow field-flow fractionation (AF4) has been considered to be a useful tool for simultaneous separation and characterization of polydisperse macromolecules or colloidal nanoparticles. AF4 analysis requires the knowledge of the channel thickness (w), which is usually measured by injecting a standard with known diffusion coefficient (D) or ...
Haiyang, Dou, Euo Chang, Jung, Seungho, Lee   +2 more
openaire   +2 more sources

Asymmetrical flow field-flow fractionation combined with ultrafiltration: A novel and high-efficiency approach for separation, purification, and characterization of Ganoderma lucidum polysaccharides

Talanta: The International Journal of Pure and Applied Analytical Chemistry, 2022
Yuxi Guo, Hong Ye, Hongjie Wang, Qiming Wang, Shengci Fan, Haiyang Dou   +5 more
semanticscholar   +1 more source

Asymmetrical flow field-flow fractionation combined with electrophoresis: A new approach for studying thermal aggregation behavior of soy protein isolate

, 2021
Wei Wang, Juhua Zhang, Xirui Zhang, Yuxi Guo, Jianhong Shi, S. Shen, Dandan Han, Haiyang Dou   +7 more
semanticscholar   +1 more source

Asymmetrical Flow Field Flow Fractionation for Molar Mass Characterization of Polyethylene Oxide in Abuse-Deterrent Formulations.

Journal of Chromatography A, 2023
Haiou Qu, William C. Smith, Xin Feng, Jiang-Ying Wang, Julia Pinto, Xiaoming Xu, P. Faustino   +6 more
semanticscholar   +1 more source