Solid-contact lead(II) ion-selective electrodes for potentiometric determination of lead(II) in presence of high concentrations of Na(I), Cu(II), Cd(II), Zn(II), Ca(II) and Mg(II)

Artur Jasiński, Marcin Guziński, Grzegorz Lisak, Johan Bobacka, Maria Bocheńska

Research output: Contribution to journalArticleScientificpeer-review

30 Citations (Scopus)

Abstract

Lead and its compounds are a serious threat to the environment. Monitoring of this toxic heavy metal is a driving force for the continuous development of novel lead(II) ionophores to be applied in ion-selective electrodes. In this work a highly selective lead(II) ionophore, namely 25,26,27,28-tetrakis(piperidinylthiocarbonylmethylene)-p-tert-butylcalix[4]arene, was used in solid-contact ion-selective electrodes for determination of Pb(II) at high concentrations of interfering ions, such as Na(I), Cu(II), Cd(II), Zn(II), Mg(II) and Ca(II). The potentiometric response of ionophore-based Pb(II)-ISEs was compared to that of a solid-state crystalline Pb(II)-ISE for Na+, Cu2+, Cd2+ and Zn2+. Determination of lead(II) by ion-selective electrodes was compared to measurements done by atomic absorption spectroscopy. Comparable concentrations of lead were obtained by both techniques, which indicate the possibility to apply such ion-selective electrodes for monitoring of lead in e.g. Zn-Pb mines where the concentration of zinc may be high compared to lead.
Original languageUndefined/Unknown
Pages (from-to)25–30
Number of pages6
JournalSensors and Actuators B: Chemical
Volume218
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Keywords

  • Determination of lead(II)
  • Influence of interfering ions
  • Lead(II) ionophore
  • Solid-contact ion-selective electrodes
  • Zn-Pb mine

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