Guanidinium-selective PVC membrane electrodes based on crown ethers |
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| Authors: | Maria Bocheńska Jan F Biernat |
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| Institution: | Institute of Inorganic Chemistry and Technology, Polytechnical University, 80952 Gdońsk Poland |
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| Abstract: | Guanidinium-selective membrane electrodes were constructed with dibenzo-24-crown-8, dibenzo-27-crown-9, tribenzo-27-crown-9 or dibenzo-30-crown-10. The detection limits and selectivity coefficients towards different interfering ions, such as Li+, Na+, K+, NH+4, Mg2+ and Ca2+ were determined. The electrode with dibenzo-27-crown-9 shows linear response over the range 10?1–10?4 M, with selectivity coefficients about 10?2 for most alkali and alkaline earth metal ions. |
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