Details
| Original language | English |
|---|---|
| Pages (from-to) | 81-92 |
| Number of pages | 12 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 217 |
| Issue number | 1-3 |
| Publication status | Published - 30 Jan 2003 |
| Externally published | Yes |
Abstract
Characterization of complex systems such as colloids calls for the combination of a multitude of analytical methods. This work reviews some of the most common techniques used to gain information on the particle size distribution of a colloidal suspension. Fractionation by filtration or centrifugation is discussed as well as flow field fractionation and electron- and atomic-force microscopy. Since these delicately balanced systems are to be characterized with as little perturbation as possible, this work lays special emphasis on non-invasive methods such as light scattering (photon correlation spectroscopy (PCS), static light scattering: single particle counter) and laser induced breakdown detection, an in-situ method, which opens up a wide operational dynamic range, covering three orders of magnitude in size (5-1000 nm) and seven orders of magnitude in particle concentration (1 ppt-several ppm). Advantages and shortcomings of each technique are illuminated by means of an example, the characterization of ThOn(OH)m-colloids in over-saturated thorium solutions. Results obtained by atomic force microscopy (AFM)-, scanning electron microscopy (SEM)-, transmission electron microscopy (TEM)-, PCS- and laser induced breakdown detection (LIBD) measurements are compared and discussed.
Keywords
- Aquatic, Breakdown, Colloid, Single particle, Thorium
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemical Engineering(all)
- Colloid and Surface Chemistry
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In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 217, No. 1-3, 30.01.2003, p. 81-92.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Comparison of colloid investigations by single particle analytical techniques - A case study on thorium-oxyhydroxides
AU - Walther, Clemens
PY - 2003/1/30
Y1 - 2003/1/30
N2 - Characterization of complex systems such as colloids calls for the combination of a multitude of analytical methods. This work reviews some of the most common techniques used to gain information on the particle size distribution of a colloidal suspension. Fractionation by filtration or centrifugation is discussed as well as flow field fractionation and electron- and atomic-force microscopy. Since these delicately balanced systems are to be characterized with as little perturbation as possible, this work lays special emphasis on non-invasive methods such as light scattering (photon correlation spectroscopy (PCS), static light scattering: single particle counter) and laser induced breakdown detection, an in-situ method, which opens up a wide operational dynamic range, covering three orders of magnitude in size (5-1000 nm) and seven orders of magnitude in particle concentration (1 ppt-several ppm). Advantages and shortcomings of each technique are illuminated by means of an example, the characterization of ThOn(OH)m-colloids in over-saturated thorium solutions. Results obtained by atomic force microscopy (AFM)-, scanning electron microscopy (SEM)-, transmission electron microscopy (TEM)-, PCS- and laser induced breakdown detection (LIBD) measurements are compared and discussed.
AB - Characterization of complex systems such as colloids calls for the combination of a multitude of analytical methods. This work reviews some of the most common techniques used to gain information on the particle size distribution of a colloidal suspension. Fractionation by filtration or centrifugation is discussed as well as flow field fractionation and electron- and atomic-force microscopy. Since these delicately balanced systems are to be characterized with as little perturbation as possible, this work lays special emphasis on non-invasive methods such as light scattering (photon correlation spectroscopy (PCS), static light scattering: single particle counter) and laser induced breakdown detection, an in-situ method, which opens up a wide operational dynamic range, covering three orders of magnitude in size (5-1000 nm) and seven orders of magnitude in particle concentration (1 ppt-several ppm). Advantages and shortcomings of each technique are illuminated by means of an example, the characterization of ThOn(OH)m-colloids in over-saturated thorium solutions. Results obtained by atomic force microscopy (AFM)-, scanning electron microscopy (SEM)-, transmission electron microscopy (TEM)-, PCS- and laser induced breakdown detection (LIBD) measurements are compared and discussed.
KW - Aquatic
KW - Breakdown
KW - Colloid
KW - Single particle
KW - Thorium
UR - http://www.scopus.com/inward/record.url?scp=0038708198&partnerID=8YFLogxK
U2 - 10.1016/S0927-7757(02)00562-9
DO - 10.1016/S0927-7757(02)00562-9
M3 - Article
AN - SCOPUS:0038708198
VL - 217
SP - 81
EP - 92
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
SN - 0927-7757
IS - 1-3
ER -