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[IEEE 2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO) - Kiev (2018.4.24-2018.4.26)] 2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO) - A Device for Rapid Measurement of Nitrate Levels in Aqueous Solutions Based on Spectrophotometric Method
摘要： Method and device for rapid measurement of nitrate levels in aqueous solutions based on spectrophotometric method. The proposed method was realized with irradiation of test sample and measuring its optical density in the ultraviolet at three wavelengths.
关键词： UV-LEDs,nitrate-ions,water,measurement of nitrate,ultraviolet spectroscopy
更新于2025-09-23 15:22:29
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[IEEE 2018 IEEE 7th International Conference on Photonics (ICP) - Langkawi, Malaysia (2018.4.9-2018.4.11)] 2018 IEEE 7th International Conference on Photonics (ICP) - Etched Fiber Bragg Grating Sensor for Nitrate Sensing Application
摘要： We demonstrate a reliable method to detect the concentration of Nitrate in water using an etched Fiber Bragg Grating (FBG) sensor. The sensor was etched using 48% Hydrofluoric (HF) acid solution to function as a chemical sensor and interact with Nitrates. The Bragg wavelength ((cid:2)b) shifted due to the changes of Nitrate concentration. The sensitivity achieved by this sensor is 2.4 x 10-3 nm/ppm. The overall shift of the Bragg wavelength is 0.12 nm from 0 – 50 ppm.
关键词： Nitrate ions,Fiber Bragg Grating sensor
更新于2025-09-23 15:21:01