A Fiber Optic pH Sensor with 1-(2-Pyridylazo)-2-Naphthol Doped in Silica Sol-Gel Film

被引：3
作者：
Khan, Mir Azam [1 ]
Alam, Seikh Mafiz [1 ]
Wabaidur, Saikh Mohammad [1 ]
Lee, Sang Hak [1 ]
Suh, Yeoun Suk [1 ]
Choi, Jong Ha [2 ]
机构：
[1] Kyungpook Natl Univ, Dept Chem, Taegu 702701, South Korea
[2] Andong Natl Univ, Dept Chem, Andong 760749, South Korea
来源：
SENSOR LETTERS | 2009年 / 7卷 / 01期
关键词：
pH Sensor; Fiber Optic; 1-(2-Pyridylazo)-2-Naphthol; Sol-Gel; Fluorescence; BIOSENSORS; BEHAVIOR; DESIGN;
D O I：
10.1166/sl.2009.1001
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A fiber optic pH sensor has been fabricated using 1-(2-pyridylazo)-2-naphthol entrapped in an ammonia catalyzed silica sol-gel film coated on glass substrate by dip-coating. The sensor was fixed at the end of an optical fiber. The sensor showed pH sensitivity when dipped into liquids of different pH. Linear and reproducible responses were obtained in standard buffer solutions in the pH range of 7.2-8.4 which encompasses the clinically-relevant range. The effects of interferences on the determination of pH were also investigated. The sensor was successfully applied to the determination of pH in various pH buffer solutions.
引用
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页码：1 / 5
页数：5
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