A voltammetric sensor based on poly(eriochrome black T) modified glassy carbon electrode for the simultaneous determination of dihydroxybenzene isomers

Document Type : Original Article

Authors

1 College of Chemistry, Shahrood University of Technology, Shahrood, P.O. Box 36155-316, Iran.

2 College of Chemistry, Shahrood University, Shahrood, P.O. Box 36155-316, Iran.

3 College of Chemistry, Shahrood University of technology, Shahrood, P.O. Box 36155-316, Iran.

Abstract

An electrochemical sensor based on deposition of polymeric film by using electrochemical method on the surface of glassy carbon electrode was fabricated for simultaneous determination of dihydroxybenzene using differential pulse voltammetry (DPV). The sensor was constructed by simple modification of glassy carbon electrode (GCE) with a uniform electro-polymerized film of poly (eriochrome black T) (poly(EBT)). The electro-chemical behaviors of hydroquinone (HQ), catechol (CC) and resorcinol (RS) at the modified electrode were studied. The obtained peak current was linearly dependent on the HQ, CC, and RS concentrations in the range of 0.50-70.0 µM, 0.50-70.0 µM and 1.0-70.0 µM, respectively. The detection limits for HQ, CC and RS at the surface of poly(EBT)/GCE were 0.20 µM, 0.11 µM and 0.60 µM (3σ), respectively. In addition, simultaneous determination of dihydroxybenzene was evaluated in real sample of water with differential pulse voltammetry.

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References

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Applied Chemistry Today
Volume 13, Issue 49
December 2018
Pages 11-20

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