Optical fibre tip sensor coated with chitosan for lead ion detection

In this work, we demonstrate an optical fibre tip sensor coated with chitosan for lead ion (Pb2+) detection. The sensor was fabricated using a tip of standard single mode optical fibre. The fibre tip region was cleaved and dipped into chitosan solution to form a sensitive layer. The coated sensor wa...

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Bibliographic Details
Main Authors: Razali, Nazirah Mohd, Zaidi, Nurul Farah Adilla, Ja’afar, Puteri Nadiah Syamimi Said, Hamzah, Azura, Ahmad, Fauzan, Ambran, Sumiaty
Format: Conference Proceeding
Language:English
Subjects:
Chitosan
Coating
Environmental monitoring
Ion detectors
Linearity
Sensors
Wastewater
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Summary:In this work, we demonstrate an optical fibre tip sensor coated with chitosan for lead ion (Pb2+) detection. The sensor was fabricated using a tip of standard single mode optical fibre. The fibre tip region was cleaved and dipped into chitosan solution to form a sensitive layer. The coated sensor was exposed to different Pb2+ concentration ranging from 0 to 70 ppm. In order to compare the sensor’s performance, the uncoated optical fibre tip sensor was firstly used to perform the measurement. The chitosan-coated tip sensor has greatly enhanced the sensor’s sensitivity 7 times higher compared to uncoated the sensor with high linearity up to 97%. As the proposed sensor shows a promising potential in detecting Pb2+, we believe the application of the sensor can be extended for environmental and wastewater monitoring.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5142127