Creation of recognition sites for organophosphate esters based on charge transfer and ligand exchange imprinting methods

Say R.

ANALYTICA CHIMICA ACTA, cilt.579, sa.1, ss.74-80, 2006 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 579 Sayı: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.aca.2006.07.010
  • Dergi Adı: ANALYTICA CHIMICA ACTA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.74-80
  • Anahtar Kelimeler: organophosphate ester, molecularly imprinted polymer (MIP), charge-transfer, ligand-exchange, SUBSTRATE-SELECTIVE POLYMERS, MOLECULAR RECOGNITION, CATALYSIS, SENSOR, PRECONCENTRATION, HYDROLYSIS, REMOVAL
  • Anadolu Üniversitesi Adresli: Hayır

Özet

This manuscript describes a method for the selective binding behavior of paraoxan and parathion compounds on surface imprinted polymers which were prepared using both charge transfer (CT) (methacryloyl-antipyrine, MAAP) and ligand-exchange (LE) (methacryloyl-antipyrine-gadalonium, MAAP-Gd) monomers. These polymers were prepared in the presence of azobisisobutyronitrile (AIBN) as an initiator and crosslinking EDMA and were imprinted with organophosphate esters. Influence of CT and LE imprinting on the creation of recognition sites toward paraoxan and parathion was determined applying adsorption isotherms. The effect of initial concentration of paraoxan and parathion, adsorption time and imprinting efficiency on adsorption selectivity for MlP-CT and MIP-LE was investigated. Association constant (K-ass), number of accessible sites (Q(max)) relative selectivity coefficient (k') and binding ability were also evaluated. (c) 2006 Elsevier B.V. All rights reserved.