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

Bektasoglu E., BİRLİK ÖZKÜTÜK E., Ersoz A., SAY R.

KOREAN JOURNAL OF CHEMICAL ENGINEERING, cilt.32, sa.8, ss.1613-1617, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32 Sayı: 8
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1007/s11814-014-0386-7
  • Dergi Adı: KOREAN JOURNAL OF CHEMICAL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1613-1617
  • Anahtar Kelimeler: Potentiometric Sensor, Dimethoate, Mip, Ion Selective Electrode, Pesticide, POLYMER, SEPARATION, PARTICLES, MEMBRANES, SORBENT, AGENTS, FILMS, ASSAY
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

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 4.3x10(-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.