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1 Polish Journal of Chemistry

1 2008

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Ionic Liquids as New Components of the Membrane of Strontium Ion-Selective Electrodes

Wardak C., Lenik J., Marczewska B.

Polish Journal of Chemistry

2008

Vol. 82, nr 1-2

223-233

The effects of the addition of ionic liquids (ILs) to the membrane phase on the potentiometric properties of strontium-selective electrodes were investigated. The studies were carried out with plasticized PVC membranes doped with bis[(trifluoromethyl)sulfonyl] amides. The electrode basic analytical parameters, such as detection limit, linear range, slope characteristics, response time and dependence of the electrode potential on pH as well as selectivity coefficients in relation to some inorganic cations were determined. As follows from the studies the addition of ILs to the membrane phase improved the analytical parameters of the studied electrodes, especially the improvement in selectivity was notable.