Why liquid membrane extraction is an attractive alternative in sample
L. Chimuka, E. Cukrowska, and J. Å. Jönsson
Department of Ecology and Resource Management, School
Science and Engineering, University of Venda for Science and Technology,
P/Bag X5050, 0950, Thohoyandou, Limpopo Province, South Africa;
School of Chemistry, University of the Witswatersrand, Private Bag 3,
Wits 2050, Johannesburg, South Africa
Department of Analytical Chemistry, Lund University, P.O.Box 124, S-22100
The use of liquid membrane-based extractions is increasingly seen as
offering an alternative to conventional sample preparation procedures
in analysis of chemical species in both environmental and biological
media. In this article, emphasis is placed on the attractiveness of
liquid membrane-based extraction techniques to a variety of analytical
applications such as speciation of metal ions in biological fluids,
time-weighted average field sampling, and time-weighted average passive
field sampling. Further, the area of designing new and much simpler
miniaturized configurations, which is enjoying much attention in liquid
membrane-based extraction techniques, is discussed.
*Plenary lectures presented at the Inaugural Conference
for the Southern and Eastern Africa Network of Analytical Chemists (SEANAC),
Gaborone, Botswana, 7-10 July 2003. Other presentations are published
in this issue, pp. 697-888.
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