Development of electrochemical impedance spectroscopy based sensing system for DEHP detection

Asif I. Zia, A. R. Mohd. Syaifudin, Subhas Chandra Mukhopadhyay, Ibrahim H. Al-Bahadly, Paklam Yu, Chinthaka Pasan Gooneratne, Jürgen Kosel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

25 Scopus citations


This research work presents a real time and non invasive technique to detect Di(2-ethylhexyl) phthalate (DEHP)content in purified water and quantify its concentration by Electrochemical Impedance Spectroscopy(E.I.S.). Planar Inter-digital capacitive sensor is employed to evaluate conductivity, permeability and dielectric properties of material under test. This sensor, consisting of inter-digitated microelectrodes, is fabricated on silicon substrate using thin-film Microelectromechanical system (MEMS) based semiconductor device fabrication technology. Impedance spectrums are obtained with various concentrations of DEHP in purified water by using an electric circuit in order to extract sample conductance. Relationship of sample conductance with DEHP concentration is studied in this research work which enables us to show the ability of E.I.S. to detect DEHP concentration in water and hence can be applied in water treatment process for contamination quantification. © 2011 IEEE.
Original languageEnglish (US)
Title of host publication2011 Fifth International Conference on Sensing Technology
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages9
ISBN (Print)9781457701672
StatePublished - Nov 2011

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KAUST Repository Item: Exported on 2020-10-01


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