Abstract:Two optical fiber chemical sensors for salicylic acid (SA) have been fabricated using ferric(III) nitrate and copperQl) nitrate as reagent. Ion exchange resin, Dowex 50x8 had been used as solid support and optimisation was done by using artificial neural network (ANN). SA sensor using immobilised Fe(III) gave maximum reflectance at wavelength of 786 nm and pH 2.1. Dynamic range of SA concentration had been extended using ANN (15 hidden neurons) from 0.02 -0.50 g/L to 0.02 -2.00 g/L. SA sensor based on immobili… Show more
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