Isophtalic acid terminated graphene oxide modified glassy carbon nanosensor electrode: Cd2+ and Bi3+ analysis in tap water and milk samples

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Albayrak I., Erkal A., Yavuz S., KARİPER İ. A., Mulazimoglu I. E., Ustundag Z.

INTERNATIONAL JOURNAL OF FOOD PROPERTIES, vol.20, no.7, pp.1558-1568, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 20 Issue: 7
  • Publication Date: 2017
  • Doi Number: 10.1080/10942912.2016.1213743
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.1558-1568
  • Keywords: Graphene oxide, Surface modification and characterization, Square wave anodic stripping voltammetry, Heavy metal analysis, Isophtalic acid terminated nanofilm, BISMUTH-FILM ELECTRODE, STRIPPING VOLTAMMETRY, PASTE ELECTRODE, ELECTROCHEMICAL BEHAVIORS, NANOCOMPOSITE FILM, SENSOR ELECTRODE, CADMIUM, NANOTUBES, COPPER, FOOD
  • Erciyes University Affiliated: Yes


In this study, graphene oxide was derivative with 5-aminoisophtalic acid by amidization reaction. The nanomaterial in suspension was denoted as graphene oxide-isophtalic acid. The graphene oxide-isophtalic acid suspension was covered on the glassy carbon electrode surface under the infrared lamb. The graphene oxide was characterized with transmission electron microscopy and x-ray diffraction. Surface characterization of the glassy carbon/graphene oxide-isophtalic acid was performed with x-ray photoelectron spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The ultrasensitive nanoplatform for the simultaneous electrochemical square-wave anodic stripping voltammetry assay of Bi3+ and Cd2+ in aqueous solution has been developed on the glassy carbon/graphene oxide-isophtalic acid. The linearity range of Bi3+ and Cd2+ were 1.0x10(-8) - 1.0x10(-12) M (S/N = 3). The responses of species were practically unaltered with the increase of various species concentration. The detection limits of Cd2+ and Bi3+ were determined as 8.1x10(-13) M and 1.06x10(-13) M, respectively. The electrode performance was checked with tap water and commercially milk samples.