Gold nanoparticle included graphene oxide modified electrode: Picomole detection of metal ions in seawater by stripping voltammetry

ÜSTÜNDAĞ İ., Erkal A., KORALAY T., KADIOĞLU Y. K., Jeon S.

JOURNAL OF ANALYTICAL CHEMISTRY, cilt.71, sa.7, ss.685-695, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 71 Sayı: 7
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1134/s1061934816070108
  • Dergi Adı: JOURNAL OF ANALYTICAL CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.685-695
  • Anahtar Kelimeler: seawater sample, voltammetry, gold nanomaterial, graphene oxide, heavy metal determination, modified electrode, GLASSY-CARBON ELECTRODE, HEAVY-METALS, SEDIMENTS, CU, PB, CADMIUM, SAMPLES, WATER, FILM, AU
  • Ankara Üniversitesi Adresli: Evet

Özet

We obtained a gold nanomaterial/graphene oxide-modified glassy carbon electrode and characterized it using transmission electron microscope, scanning electron microscope, cyclic voltammetry (CV), and X-ray photoelectron spectroscopy techniques. A response of the electrode using square wave anodic stripping voltammetry for Pb2+, Cu2+, and Hg2+ was found linear in the range from 1 x 10(-7) to 1 x 10(-11) M. The detection limits of Pb2+, Cu2+ and Hg2+ were 0.14, 0.5 and 1.2 pM, respectively. The method was applied to the simultaneous determination of Pb2+, Cu2+ and Hg2+ in seawater samples from a coastal region of Anatolia, and the results corresponded well with the values obtained by inductively coupled plasma-optical emission spectroscopy.