8-10 June 2016
Asia/Bangkok timezone

Graphene Oxide/Hydroxyapatite Hybrid Materials for Detection of Ethylenediaminetetraacetic Acid

Not scheduled
Poster presentation Material Physics, Nanoscale Physics and Nanotechnology


Worapot Prongmanee


Ethylenediaminetetraacetic acid (EDTA) is a well-known agent for chelating metal ions as found in various applications, i.e. environmental controls, food and non-alcoholic-beverage additives, etc. High content of EDTA in foods and environments is of health and environmental concerns. In this work, graphene oxide (GO)/hydroxyapatite (HAp) composite synthesized by chemical approaches was used as an active material for detecting EDTA in phosphate buffered saline (PBS) via potentiometric methods. GO/HAp composite was deposited on gold electrode by a drop-dried deposition technique. Cyclic voltammetry (CV) results showed that GO/HAp composite offers better EDTA detection than graphene oxide modified gold electrode. In addition, amperometry of GO/HAp composite on gold electrode showed a good linear relationship between oxidation peak current and EDTA concentrations (0.5 to 9 µM) with the detection limit of 0.5 µM.

Keyword: Graphene oxide, Hydroxyapatite, Ethylenediaminetetraacetic Acid, Detection,

Primary author


Dr Piyapong Asanithi ((1)Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand (2)ThEP Center, Commission of Higher Education, 328 Si Ayuthaya Rd, Thailand)

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