Results 291 to 300 of about 37,178 (323)

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

Stopless Flow Injection in Asymmetrical Flow Field-Flow Fractionation Using a Frit Inlet

Analytical Chemistry, 1997
Stopless flow operation of asymmetrical flow field-flow fractionation (FFF) has been achieved by introducing a hydrodynamic relaxation method using a frit inlet. By using frit inlet injection, a focusing process which has been an essential part of runs at the asymmetrical flow FFF system can be completely avoided.
M H, Moon, H, Kwon, I, Park
openaire   +2 more sources

Capillary electrophoresis and asymmetric flow field-flow fractionation for size-based separation of engineered metallic nanoparticles: A critical comparative review

Trends in Analytical Chemistry (TrAC), 2018
In the characterization of nanomaterials, size and size distribution are among the most important parameters. A high-resolution technique is essential for the accurate determination of size distribution for a polydisperse nanoparticle suspension ...
Thilak K. Mudalige, Haiou Qu, Desiree Van Haute, Siyam M Ansar, Sean W. Linder   +4 more
semanticscholar   +1 more source

Electrical asymmetric-flow field-flow fractionation with a multi-detector array platform for the characterization of metallic nanoparticles with different coatings

Analytical and Bioanalytical Chemistry, 2023
Sergio Fernández-Trujillo, Armando Sánchez-Cachero, F. J. Guzmán Bernardo, Nuria Rodríguez-Fariñas, M. Jiménez-Moreno, R. C. R. Rodríguez Martín-Doimeadios   +5 more
semanticscholar   +1 more source

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

Characterization of molecular properties of wheat starch from three different types of breads using asymmetric flow field-flow fractionation (AF4).

Food Chemistry, 2019
In this study, molecular properties of wheat starch from three different types of breads were analyzed using asymmetric flow field-flow (AF4) connected to multi-angle light scattering (MALS) and differential refractive index (dRI) detectors.
Catalina Fuentes, R. Castañeda, Fanny Rengel, J. M. Peñarrieta, L. Nilsson   +4 more
semanticscholar   +1 more source

Conformation and persistence length of chitosan in aqueous solutions of different ionic strengths via asymmetric flow field-flow fractionation.

Carbohydrate Polymers, 2021
Yu Kang, Xinyue Zhao, Xintong Han, Xiangling Ji, Quan Chen, H. Pasch, A. Lederer, Yonggang Liu   +7 more
semanticscholar   +1 more source

Asymmetric Flow Field Flow Fractionation

, 2012
Š. Podzimek
semanticscholar   +1 more source

Asymmetric Flow Field-Flow Fractionation: Current Status, Possibilities, Analytical Limitations and Future Trends

Chromatographia, 2021
Š. Podzimek, C. Johann
semanticscholar   +1 more source

Design of an asymmetrical flow field-flow fractionation channel for uniform channel flow velocity

Journal of Microcolumn Separations, 1997
A new design for an asymmetrical flow field-flow fractionation (FFF) channel, having a breadth that decreases exponentially along its length, is presented. It is shown that such a channel may be operated under certain flow conditions to obtain a constant mean channel flow velocity throughout its effective length.
openaire   +1 more source