Oligocarbazoles as ligands for lead-selective liquid membrane electrodes

Jerzy Radecki¹, Izabela Grzybowska, Ahmed Hameurlaine

¹Institute of Animal Reproduction of Polish Academy of Sciences, Division of Food Science, Tuwima 10, 10-747 Olsztyn, Poland.

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry

|November 30, 2004

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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