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149 Newest Publications about the topic field flow fractionation

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Separation and characterization of cellulose nanocrystals by multi-detector asymmetrical-flow field-flow fractionation

23-Jan-2018 | Arnab Mukherjee; Vincent A. Hackley, Analyst, 2018

Cellulose nanocrystals (CNCs) are renewable, naturally derived polymeric nanomaterials receiving substantial attention for a wide range of potential applications. The recent availability of high quality reference materials will facilitate the development and validation of measurement methods ...

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Tracking the Transformation of Nanoparticulate and Ionic Silver at Environmentally Relevant Concentration Levels by Hollow Fiber Flow Field-Flow Fractionation Coupled to ICPMS

23-Oct-2017 | Zhi-Qiang Tan; Yong-Guang Yin; Xiao-Ru Guo; Meseret Amde; Myeong Hee Moon; Jing-Fu Liu; Gui-Bin Jiang, Environmental Science & Technology, 2017

It is a great challenge to monitor the physical and chemical transformation of nanoparticles at environmentally relevant concentration levels, mainly because the commonly used techniques like dynamic light scattering and transmission electron microscopy are unable to characterize and quantify ...

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Hollow-fiber flow field-flow fractionation and multi-angle light scattering as a new analytical solution for quality control in pharmaceutical nanotechnology

14-Oct-2017 | Author(s): Valentina Marassi, Barbara Roda, Sonia Casolari, Simona Ortelli, Magda Blosi, Andrea Zattoni, ..., Microchemical Journal, 2017

Publication date: January 2018 Source:Microchemical Journal, Volume 136 Author(s): Valentina Marassi, Barbara Roda, Sonia Casolari, Simona Ortelli, Magda Blosi, Andrea Zattoni, Anna Luisa Costa, Pierluigi Reschiglian The rapid development of nanoproducts in pharmaceutical ...

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Hollow-fiber flow field-flow fractionation and multi-angle light scattering as a new analytical solution for quality control in pharmaceutical nanotechnology

14-Oct-2017 | Author(s): Valentina Marassi, Barbara Roda, Sonia Casolari, Simona Ortelli, Magda Blosi, Andrea Zattoni, ..., Microchemical Journal, 2017

Publication date: January 2018 Source:Microchemical Journal, Volume 136 Author(s): Valentina Marassi, Barbara Roda, Sonia Casolari, Simona Ortelli, Magda Blosi, Andrea Zattoni, Anna Luisa Costa, Pierluigi Reschiglian The rapid development of nanoproducts in pharmaceutical ...

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Pitfalls in Size Characterization of Soft Particles by Dynamic Light Scattering Online Coupled to Asymmetrical Flow Field-Flow Fractionation

13-Oct-2017 | Simona Sitar; Valerija Vezočnik; Peter Maček; Ksenija Kogej; David Pahovnik; Ema Žagar, Analytical Chemistry, 2017

An asymmetrical flow field-flow fractionation (AF4) technique coupled to a multiangle light scattering (MALS) detector with an embedded dynamic light scattering (DLS) module was introduced to study the size characteristics and shape of soft particles of various size and type: polystyrene ...

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AF4-ICPMS with the 300 Da Membrane To Resolve Metal-Bearing “Colloids” < 1 kDa: Optimization, Fractogram Deconvolution, and Advanced Quality Control

14-Jul-2017 | Chad W. Cuss; Iain Grant-Weaver; William Shotyk, Analytical Chemistry, 2017

The smallest colloids exert a disproportionately large influence on colloidal systems owing to their greater surface area; however, the challenges of working in the smaller size range have limited most field-flow fractionation-ICPMS analyses to sizes > ca. 1 kDa. We discuss considerations and ...

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Characterization of Complex Polymer Self-Assemblies and Large Aggregates by Multidetector Thermal Field-Flow Fractionation

22-Jun-2017 | Upenyu L. Muza; Guilaume Greyling; Harald Pasch, Analytical Chemistry, 2017

Micelles prepared from amphiphilic block copolymers (ABCs) have found numerous applications in pharmaceutical, electronics, environmental, cosmetics, and hygiene industries. These micelles, whether in the pure or mixed micelle form, often exist as multiple morphologies (spherical, cylindrical, ...

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Measurement of the Density of Engineered Silver Nanoparticles Using Centrifugal FFF-TEM and Single Particle ICP-MS

17-May-2017 | Soheyl Tadjiki; Manuel David Montaño; Shoeleh Assemi; Angela Barber; James Ranville; Ronald Beckett, Analytical Chemistry, 2017

A methodology has been developed to measure nanoparticle mass and density, by combining centrifugal field-flow fractionation (CeFFF; more commonly called sedimentation FFF or SdFFF) and transmission electron microscopy (TEM). Particle effective mass obtained from CeFFF retention data and particle ...

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Contribution of single particle inductively coupled plasma mass spectrometry and asymmetrical flow field flow fractionation to the characterization of silver nano-suspensions. Comparison with other sizing techniques.

16-May-2017 | Sylvie Motellier; Nathalie Scheer-Pélissier; Jean-Gabriel Mattei, Journal of Analytical Atomic Spectrometry, 2017

The determination of the size and size distribution of five silver nano-colloid populations has been assessed by different techniques. Transmission electron microscopy (TEM) was proposed as a reference in single particle methods. It was compared with three particle population methods: dynamic ...

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Analytical Characterization of the Hydrolysis of Barley Malt Macromolecules During Enzymatic Degradation Over Time Using AF4/MALS/RI

10-May-2017 | Heinrich Rübsam, Thomas Becker, Martina Gastl, Journal of Food Science, 2017

Abstract The changes on the molecular weight distribution (MWD) and particle size distribution (PSD) during hydrolysis of barley malt in isothermal mashing procedures were determined using asymmetrical flow field flow fractionation coupled to multiangle laser light scattering and refractive ...

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