Title :
Development of intrinsic optical fiber pH sensors for industrial applications
Author :
Nguyen, T. Hien ; Venugopalan, Thillainathan ; Sun, Tong ; Grattan, Kenneth T V
Author_Institution :
Sch. of Eng. & Math. Sci., City Univ. London, London, UK
Abstract :
The development of intrinsic optical fiber pH sensors based on fluorescence from novel coumarin dyes which are covalently immobilized onto the distal end of the fiber is described. The sensors provide response in the pH range of 0.5-6 with good stability over 24 h. The response time of the sensors is approximately 25 s. The sensors show no sensitivity to ionic strength (IS) and have excellent photostability.
Keywords :
chemical sensors; dyes; fibre optic sensors; fluorescence; pH; pH measurement; coumarin dyes; covalent immobilization; fluorescence; industrial applications; intrinsic optical fiber pH sensors; ionic strength; photostability; Chemical sensors; Electrodes; Fluorescence; Glass; Immune system; Optical fiber sensors; Optical fibers; Optical sensors; Solids; Stability;
Conference_Titel :
Sensors, 2009 IEEE
Conference_Location :
Christchurch
Print_ISBN :
978-1-4244-4548-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2009.5398229
