8-10 June 2016
Asia/Bangkok timezone

Graphene Oxide/Hydroxyapatite Hybrid Materials for Detection of Ethylenediaminetetraacetic Acid

Not scheduled
15m
Poster presentation Material Physics, Nanoscale Physics and Nanotechnology

Speaker

Worapot Prongmanee

Description

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

Co-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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