| Abstrakt: |
Lead concentration in water has generally been detected using laboratory methods, which are expensive, time-consuming, and less efficient. Lead detection in water has been improved using bending multimode Plastic Optical Fiber (POF). The study involved bending varied in radius of 2.2 cm and 0.7 cm compared with straight POF while detecting the different lead concentrations in water. The chemical etching modified the POF to generate a sensing section using the evanescent wave technique. The results indicated that the output voltage and concentration have a logarithmic trendline relation with the highest R² = 0,996 in the 2.2 cm bending configuration graph. Based on sensor characterization, detection using a bending configuration with r = 0.7 cm achieves the highest sensitivity, 0.172 mV/ppm, but the highest loss, 14.067 dB, compared with a larger radius, r = 2.2 cm, and straight configuration. The highly sensitive bending POF is potentially utilized as an effective simplicity operation sensor without reagents for detecting lead in water. [ABSTRACT FROM AUTHOR] |
