Synthesis of N'-(1-pyridin-2-ylmethylene)-2-furohydrazide and its application in construction of a highly selective PVC-based membrane sensor for La(III) ions

Anal Sci. 2006 Jul;22(7):943-8. doi: 10.2116/analsci.22.943.

Abstract

A highly La(III) ion-selective PVC membrane sensor based on N'-(1-pyridin-2-ylmethylene)-2-furohydrazide (NPYFH) as an excellent sensing material was successfully developed. The electrode shows a good selectivity for La(III) ion with respect to most common cations including alkali, alkaline earth, transition and heavy metal ions. The proposed sensor exhibits a wide linear response with slope of 19.2 +/- 0.6 mV per decade over the concentration range of 1.0 x 10(-6) - 1.0 x 10(-1) M, and a detection limit of 7.0 x 10(-7) M of La(III) ions. The sensor response is independent of pH in the range of 3.5-10.0. The proposed electrode was applied as an indicator electrode in potentiometric titration of La(III) ion with EDTA.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Furans / chemical synthesis*
  • Furans / chemistry
  • Hydrazines / chemical synthesis*
  • Hydrazines / chemistry
  • Hydrogen-Ion Concentration
  • Lanthanum / chemistry*
  • Magnetic Resonance Spectroscopy / methods
  • Membranes, Artificial*
  • Models, Molecular
  • Organometallic Compounds / chemical synthesis
  • Organometallic Compounds / chemistry*
  • Polyvinyl Chloride / chemistry*
  • Pyridines / chemical synthesis*
  • Pyridines / chemistry
  • Sensitivity and Specificity

Substances

  • Furans
  • Hydrazines
  • Membranes, Artificial
  • N'-(1-pyridin-2-ylmethylene)-2-furohydrazide
  • Organometallic Compounds
  • Pyridines
  • Lanthanum
  • Polyvinyl Chloride