Disposable screen printed electrode modified with imine receptor having a wedge bridge for selective detection of Fe (II) in aqueous medium
By Rana, Sonia; Mittal, Susheel K.; Kaur, Navneet; Banks, Craig E.
Published in Sensors and Actuators B: Chemical
NULL
2017
Abstract
Abstract A disposable voltammetric sensor is reported for the detection of ferrous ions in aqueous medium. Screen printed electrodes (SPE) modified with Schiff base derivative having methylene bridge forming a wedge between two Schiff base motifs (SMS-1) have been developed. A receptor compound (SMS-1) was used for the electrochemical detection of Fe (II). Surface modification of the modified {SPE} was confirmed with scanning electron microscope (SEM) and energy dispersive X-ray (EDX) spectroscopy. Electrochemical behavior of the ionophore (SMS-1) modified {SPE} was investigated with cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Detection of Fe (II) is based on voltammetric response of the receptor-Fe (II) complex. Under optimized conditions, peak current of the complex depended linearly on the amount of Fe (II) in the concentration range of 0.6 ?/4M
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