Simultaneous determination of In(III) and Cd(II) by differential pulse polarography in the presence of poly beta-cyclodextrin.
The difference in the peak potentials of In(III) and Cd(II), whose reduction potentials are very close to each other, becomes large in the presence of poly beta-cyclodextrin in sodium perchlorate medium. The relationships between the peak currents for these two ions and their concentrations are linear, suggesting that the simultaneous determination of the ions is possible in the presence of this reagent.
Kurotu
T
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Department of Chemistry, The National Defense Academy, 239, Yokosuka, Japan.