Oligocarbazoles as ligands for lead-selective liquid membrane electrodes. |
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| Authors: | Jerzy Radecki Izabela Grzybowska Ahmed Hameurlaine Wim Dehaen |
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| Institution: | Institute of Animal Reproduction of Polish Academy of Sciences, Division of Food Science, Tuwima 10, 10-747 Olsztyn, Poland. |
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| Abstract: | Oligocarbazoles have been applied as new ionophores in liquid membrane electrodes (ISEs) destined for lead(II) determination in water samples. The oligocarbazole-containing ISEs demonstrated a close-to-Nernstian potentiometric response towards Pb2+ in the activity range 10(-7)-10(-2) M. The selectivity coefficients measured by the matched potential method (MPM) confirmed their good selectivity against common interfering mono- and doubly charged cations. The oligocarbazole-containing ISEs do not respond towards protons. Their applicability has been checked by performing the recovery test while using a sample of wastewater. |
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