Use of four-factorial design in ion-selective potentiometry for analysis of multi-ionic solutions |
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| Authors: | A Akhmetshin V Baranovsky A Akhmetshina |
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| Institution: | Department of Chemistry and Biology, Ternopil State Teacher-Training University, 2, M. Kryvonos Str., 282009 Ternopil, Ukraine Fax: (035) 33-50-55, e-mail: Tereshchuk@tdpi.edu.te.ua, UA
Food Processing Department, Ternopil State Technical University, 56, Ruska Str., 282001 Ternopil, Ukraine, UA
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| Abstract: | Even with small selectivity of electrodes the application of multi-factorial design produces good results for complex ion mixtures. Carrying out serial analyses with this method, the time for the preparation of specimens is shortened and the accuracy of the determination is increased. The electrode selectivity is characterized using regression equations and an interference level diagram. A graphical representation of data is suggested taking into account the dependence of response on the number of interfering cations. |
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