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Chemical shift imaging of molecular transport in colloidal systems: Visualization and quantification of diffusion processes

Salvati, Anna LU ; Lynch, Iseult LU ; Malmborg, Carin LU and Topgaard, Daniel LU (2007) In Journal of Colloid and Interface Science 308(2). p.542-550
Abstract
Magnetic resonance imaging with chemical shift resolution is demonstrated to provide detailed information about molecular transport on the macroscopic scale in complex colloidal systems. The concentrations of species with distinct 1 H resonance lines can be quantified from spatially resolved, high-resolution, H-1 nuclear magnetic resonance spectra. The method is demonstrated by experiments on three systems with multiple simultaneous transport processes where the diffusion coefficients depend on position and/or on the concentration of other species: (1) release of poly(ethylene glycol) and imidazole from a hydrogel into an external reservoir of water, (2) migration of acetic acid and tetramethylammonium ions in a highly concentrated... (More)
Magnetic resonance imaging with chemical shift resolution is demonstrated to provide detailed information about molecular transport on the macroscopic scale in complex colloidal systems. The concentrations of species with distinct 1 H resonance lines can be quantified from spatially resolved, high-resolution, H-1 nuclear magnetic resonance spectra. The method is demonstrated by experiments on three systems with multiple simultaneous transport processes where the diffusion coefficients depend on position and/or on the concentration of other species: (1) release of poly(ethylene glycol) and imidazole from a hydrogel into an external reservoir of water, (2) migration of acetic acid and tetramethylammonium ions in a highly concentrated water-in-oil emulsion with initially non-uniform concentration of solutes, and (3) release of tetramethylammonium ions loaded into a hydrogel triggered by the diffusion of methyl green into the gel matrix. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
pure phase-encoding, CSI, MRI, NMR, controlled release
in
Journal of Colloid and Interface Science
volume
308
issue
2
pages
542 - 550
publisher
Elsevier
external identifiers
  • wos:000244841500032
  • scopus:33847283059
ISSN
1095-7103
DOI
10.1016/j.jcis.2006.11.035
language
English
LU publication?
yes
id
c3f2b612-c09c-4115-9863-466b52d43d78 (old id 670437)
date added to LUP
2007-12-18 13:26:23
date last changed
2017-01-01 05:10:13
@article{c3f2b612-c09c-4115-9863-466b52d43d78,
  abstract     = {Magnetic resonance imaging with chemical shift resolution is demonstrated to provide detailed information about molecular transport on the macroscopic scale in complex colloidal systems. The concentrations of species with distinct 1 H resonance lines can be quantified from spatially resolved, high-resolution, H-1 nuclear magnetic resonance spectra. The method is demonstrated by experiments on three systems with multiple simultaneous transport processes where the diffusion coefficients depend on position and/or on the concentration of other species: (1) release of poly(ethylene glycol) and imidazole from a hydrogel into an external reservoir of water, (2) migration of acetic acid and tetramethylammonium ions in a highly concentrated water-in-oil emulsion with initially non-uniform concentration of solutes, and (3) release of tetramethylammonium ions loaded into a hydrogel triggered by the diffusion of methyl green into the gel matrix.},
  author       = {Salvati, Anna and Lynch, Iseult and Malmborg, Carin and Topgaard, Daniel},
  issn         = {1095-7103},
  keyword      = {pure phase-encoding,CSI,MRI,NMR,controlled release},
  language     = {eng},
  number       = {2},
  pages        = {542--550},
  publisher    = {Elsevier},
  series       = {Journal of Colloid and Interface Science},
  title        = {Chemical shift imaging of molecular transport in colloidal systems: Visualization and quantification of diffusion processes},
  url          = {http://dx.doi.org/10.1016/j.jcis.2006.11.035},
  volume       = {308},
  year         = {2007},
}