Investigation of Fiber Optics Sensor for Monitoring of Chemical Contaminants

摘要

Detection and characterization of chemical contaminants in water streams is paramount for water qualityrnand water security. The current trend of monitoring the presence of contaminants is the batch samplingrntechnique, where sample of water is collected and analyzed in the laboratory this method is not practicalrnin case of disasters. A modified cladding Polyaniline based sensor is developed that can detect ammoniarnand hydrochloric acid. The sensor developed showed a rapid reversible color change when exposed tornammonia and hydrochloric acid. The change in intensity caused by the modified cladding is studiedrnparametrically which will help in formulation of a correlation between response time, concentration ofrnchemical contaminant and change in optical intensity.