3D characterization of natural colloids by FlFFF-MALLS-TEM
- Author(s)
- Mohammed Baalousha, Frank von der Kammer, M. Motelica-Heino, Philippe Le Coustumer
- Abstract
Understanding the role of colloids in the environment needs a more complete characterization of their size and shape than the usually used hydrodynamic diameter. A novel methodology to determine three dimensional description of colloids has been successfully experimented in this work by coupling Flow-Field Flow Fractionation (FlFFF) to Multi Angle Laser Light Scattering (MALLS), and Transmission Electron Microscope (TEM). This methodology was evaluated for a soil colloidal sample. Results show that, the particles surface areas determined by FlFFF-MALLS-TEM, are 3-4 times greater than those calculated using the hydrodynamic diameter determined by FlFFF. Further, results indicated that, the surface area/volume values are 3-5 times greater than those calculated based on the hydrodynamic diameter. Therefore, a correction factor must be applied when the particle surface area is calculated from the hydrodynamic diameter determined by FlFFF. © Springer-Verlag 2005.
- Organisation(s)
- External organisation(s)
- Université Bordeaux, Bureau des Recherches Geologiques et Minieres (BRGM)
- Journal
- Analytical and Bioanalytical Chemistry
- Volume
- 383
- Pages
- 549-556
- No. of pages
- 8
- ISSN
- 1618-2642
- DOI
- https://doi.org/10.1007/s00216-005-0006-9
- Publication date
- 2006
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 104023 Environmental chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/8f38103f-5956-4d51-8869-73e3ddc163e6