Development of a novel pH sensor based upon Janus Green B immobilized on triacetyl cellulose membrane: Experimental design and optimization

Narges Chamkouri; Ali Niazi; Vali Zare-Shahabadi

doi:10.1016/j.saa.2015.11.016

Development of a novel pH sensor based upon Janus Green B immobilized on triacetyl cellulose membrane: Experimental design and optimization

Spectrochim Acta A Mol Biomol Spectrosc. 2016 Mar 5:156:105-11. doi: 10.1016/j.saa.2015.11.016. Epub 2015 Dec 1.

Authors

Narges Chamkouri¹, Ali Niazi², Vali Zare-Shahabadi³

Affiliations

¹ Department of Chemistry, Faculty of Sciences, Islamic Azad University, Arak Branch, Arak, Iran.
² Department of Chemistry, Faculty of Sciences, Islamic Azad University, Arak Branch, Arak, Iran. Electronic address: a-niazi@iau-arak.ac.ir.
³ Department of Chemistry, College of Chemical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran.

PMID: 26655070
DOI: 10.1016/j.saa.2015.11.016

Abstract

A novel pH optical sensor was prepared by immobilizing an azo dye called Janus Green B on the triacetylcellulose membrane. Condition of the dye solution used in the immobilization step, including concentration of the dye, pH, and duration were considered and optimized using the Box-Behnken design. The proposed sensor showed good behavior and precision (RSD<5%) in the pH range of 2.0-10.0. Advantages of this optical sensor include on-line applicability, no leakage, long-term stability (more than 6 months), fast response time (less than 1 min), high selectivity and sensitivity as well as good reversibility and reproducibility.

Keywords: Box–Behnken design; Janus Green B; Triacetylcellulose membrane; pH optical sensor.

Publication types

Research Support, Non-U.S. Gov't