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A study on liquid-liquid distribution based on single picoliter droplets and in situ electrochemical measurements
K Nakatani1, M Sudo, N Kitamura
1Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, Japan.
Analytical Chemistry
|February 5, 2000
Abstract:
A microelectrode technique combined with the microcapillary injection/manipulation of a single organic droplet in water was developed. The technique was applied to the study of the distribution of a ferrocene derivative across a single-picoliter-nitrobenzene-droplet/water interface and to the simultaneous in situ electrochemical determination of the distributed solute in the picomole-femtomole range. The liquid-liquid distribution processes were discussed in terms of droplet size and solute concentration (in water) dependencies of the interfacial mass transfer rate.