Double-imprinted potentiometric sensors based on ligand exchange for the determination of dimethoate

Bektaşoğlu E., Özkütük E. B., ERSÖZ A., Say R.

Korean Journal of Chemical Engineering, vol.32, no.8, pp.1613-1617, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 8
  • Publication Date: 2015
  • Doi Number: 10.1007/s11814-014-0386-7
  • Journal Name: Korean Journal of Chemical Engineering
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1613-1617
  • Keywords: Potentiometric Sensor, Dimethoate, Mip, Ion Selective Electrode, Pesticide, POLYMER, SEPARATION, PARTICLES, MEMBRANES, SORBENT, AGENTS, FILMS, ASSAY
  • Anadolu University Affiliated: Yes

Abstract

© 2014, Korean Institute of Chemical Engineers, Seoul, Korea.This paper describes a dimethoate imprinted polymeric potentiometric sensor for the determination of dimethoate that was designed by dispersing the dimethoate-imprinted polymer in dibutyl phthalate plasticizer and then embedded in polyvinyl chloride matrix. The method is based on molecularly imprinted polymer (MIP), which can be synthesized by using dimethoate as a template molecule, chitosan-Cd(II), and 3-mercaptopropyl-trimethoxysilane as a functional monomer and TEOS, and ephychlorohydrin as a cross-linking agent. We have studied a method for the selective binding behavior of dimethoate compounds on the surface of imprinted polymers which is prepared using ligand-exchange (LE) (chitosan-Cd(II)) monomer. The MIP-LE-1 and MIP-LE-2 based membranes have shown a detection limit of 4.3×10−6 mmolL−1 and 3.5.10−5 mmolL−1, respectively. The sensor has exhibited a response time of 35min for MIP-LE-1 and 120min for MIP-LE-2. They are stable for more than three months.