New molecular imprinted voltammetric sensor for determination of ochratoxin A.
In this report, a novel molecular imprinted voltammetric sensor based on silver nanoparticles (AgNPs) involved in a polyoxometalate (H3PW12O40, POM) functionalized reduced graphene oxide (rGO) modified glassy carbon electrode (GCE) was presented for determination of ochrattoxin A (OCH). The developed surfaces were characterized using scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) method. OCH imprinted GCE was prepared via electropolymerization process of 100mM phenol as monomer in the presence of phosphate buffer solution (pH6.0) containing 25 mM OCH. The linearity range and the detection limit of the method were calculated as 5.0 × 10(-11) - 1.5 × 10(-9)M and 1.6 × 10(-11) M, respectively. The voltammetric sensor was applied to grape juice and wine samples with good selectivity and recovery. The stability of the voltammetric sensor was also reported.
['Yola|Mehmet Lütfi|ML|', 'Gupta|Vinod Kumar|VK|', 'Atar|Necip|N|']
D001628:Beverages D002244:Carbon D055664:Electrochemical Techniques D004566:Electrodes D006108:Graphite D006863:Hydrogen-Ion Concentration D057230:Limit of Detection D053768:Metal Nanoparticles D008855:Microscopy, Electron, Scanning D054802:Molecular Imprinting D009793:Ochratoxins D056951:Photoelectron Spectroscopy D012834:Silver D017973:Tungsten Compounds D014920:Wine
Silver nanoparticles Polyoxometalate Reduced graphene oxide Molecular imprinted sensor Ochratoxin A