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

作者：Chamkouri Narges; Niazi Ali^*; Zare Shahabadi Vali

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2016, 156: 105-111.

DOI：10.1016/j.saa.2015.11.016

• pH optical sensor
• Janus Green B
• Triacetylcellulose membrane
• Box-Behnken design

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.

• 出版日期2016-3-5