Diffusion measurement in gels

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Abstract

Methods for measuring diffusion coefficients in gels are reviewed, and their capacities, limitations and requirements are briefly discussed. With four of these methods, i.e., the diaphragm cell, uptake/release from beads, holographic laser interferometry and nuclear magnetic resonance (FT-PGSE), a comparison is made with regard to accuracy and precision. The comparison is based on a number of studies in which the diffusion coefficient of ethanol in agarose gel has been measured. It is concluded that the diaphragm cell and nuclear magnetic resonance (FT-PGSE) are very accurate and precise.

Detaljer

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Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Kemiteknik

Nyckelord

Originalspråkengelska
Sidor (från-till)189-199
TidskriftJournal of Controlled Release
Volym30
Utgivningsnummer3
StatusPublished - 1994
PublikationskategoriForskning
Peer review utfördJa