Number: 2001-035-1-100 (previous
160/5/98)
Title: Measurement and interpretation of electrokinetic
phenomena
Task Group
Chairmen: F.
Gonzalez-Caballero and A.
Delgado Mora
Members:
A.S. Dukhin, S.S. Dukhin, K. Furusawa, C. Grosse, R.J. Hunter,
R. Jack, M. Kaszuba, L.K. Koopal, M. Kosmulski, J. Lyklema, R. Noremberg,
V. Ribitsch, V.N. Shilov, F. Simon, C. Werner, A. Zhukov, and R. Zimmerman
Completion Date: 2005 - project completed
Objective:
- Discuss the various electrokinetic phenomena and give recommendations
on the use of the different techniques.
- Discuss briefly the theories of electrokinetic phenomena.
Description:
Collect and spread the available and updated scientific information
about the main electrokinetic phenomena. This includes:
-
fundamental background and clarification of notions
used in electrokinetics
- discussion of theoretical models, with emphasis on the validity
and usefulness of the various models
-
critical evaluation of experimental methods with
their ranges of applicability and limitations (electrophoresis,
streaming potential/current, electroosmosis, dielectric dispersion,
electro-acoustics)
- description of model systems that can be used as standards for each
technique
- elucidation of the physicochemical information that can be obtained
from the use of a given method and the corresponding theoretical models
Progress:
The project was first discussed in the Electrokinetic Phenomena Conferencia
held in Salzburg (1998). A significant number of specialists in the
field agreed to contribute and sent their chapters to the coordinator
during 1999-2000.
A meeting of the Task Group took place during the Electrokinetic
Phenomena Conference in Dresden, October 2000. The discussion made
clear that the project is ambitious with many difficulties that have
to be settled. After the workshop written comments were sent to the
coordinator by several members of the task group and a preliminary
list of recommended symbols was produced. Restructuring of the draft
has been demanding and the second draft was completed just before
the GA in Brisbane (July 2001).
A final period is required to produce a document that
gives balanced guidelines for the use of electrokinetic methods and
the correct interpretation of the results. There is a large number
of electrokinetic techniques that all need attention including their
theoretical background (which is complicated even for ordinary surfaces).
The working party will met at the EKP Conference, August
2002, in Cracow (Poland) to discuss the progress and advise on open
questions.
Feb 2005 - A final draft of this Technical Report
was submitted to PAC for publication.
October 2005 - project completed - IUPAC Technical Report
in Pure
Appl. Chem.
77(10), 1753-1805, 2005
Last update: 17 October 2005
Page last modified 17 October 2005.
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