Open AccessStudies on a Pb2+ - selective electrode with a macrocyclic liquid membrane: Potentiometric determination of pb2+ ions
Author(s) -
Marian Isvoranu,
Constantin Luca,
Maria Pleniceanu,
Cezar Spînu
Publication year - 2006
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 45
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc0612345i
Subject(s) - potentiometric titration , ionophore , chemistry , electrode , ion , membrane , propylene carbonate , atomic absorption spectroscopy , ion selective electrode , inorganic chemistry , electroanalytical method , potentiometric sensor , analytical chemistry (journal) , titration , selectivity , electrochemistry , chromatography , organic chemistry , catalysis , biochemistry , physics , quantum mechanics
This paper presents experimental and theoretical data regarding the design, characterization and analytical applications of a non-expensive, liquid-membrane ion-selective electrode for Pb2+ ions. The membrane is a solution of the active complex formed by Pb2+ ions with dibenzo-18-crown-6-ionophore (DB-[18]-C-6) extracted in propylene carbonate (PC). The successful application of the developed electrode for the determination of Pb2+ ions in aqueos solution samples by direct potentiometry and potentiometric titration is presented. For the presented analytical results, there are insignificant systematic errors between the direct potentiometric method with the developed ion-selective electrode and atomic absorption spectrometry. .