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

被引:13
作者
Chamkouri, Narges [1 ]
Niazi, Ali [1 ]
Zare-Shahabadi, Vali [2 ]
机构
[1] Islamic Azad Univ, Arak Branch, Fac Sci, Dept Chem, Arak, Iran
[2] Islamic Azad Univ, Mahshahr Branch, Coll Chem Engn, Dept Chem, Mahshahr, Iran
关键词
pH optical sensor; Janus Green B; Triacetylcellulose membrane; Box-Behnken design; OPTICAL SENSOR; FILM; VALUES; RED; INDICATORS;
D O I
10.1016/j.saa.2015.11.016
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
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. (c) 2015 Published by Elsevier B.V.
引用
收藏
页码:105 / 111
页数:7
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