Oligocarbazoles as ligands for lead-selective liquid membrane electrodes.
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.
Radecki
Jerzy
J
Institute of Animal Reproduction of Polish Academy of Sciences, Division of Food Science, Tuwima 10, 10-747 Olsztyn, Poland.
Grzybowska
Izabela
I
Hameurlaine
Ahmed
A
Dehaen
Wim
W
D002227:Carbazoles / Q000737:chemistry*; D004566:Electrodes; D004785:Environmental Pollutants / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007854:Lead / Q000032:analysis*; D008567:Membranes, Artificial; D011199:Potentiometry
D002227:Carbazoles; D004785:Environmental Pollutants; D007202:Indicators and Reagents; D008567:Membranes, Artificial; D007854:Lead