A Fiber Optic pH Sensor with 1-(2-Pyridylazo)-2-Naphthol Doped in Silica Sol–Gel Film
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.
Keywords: 1-(2-PYRIDYLAZO)-2-NAPHTHOL; FIBER OPTIC; FLUORESCENCE; PH SENSOR; SOL-GEL
Document Type: Research Article
Publication date: 01 February 2009
- The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites
- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content