An Investigation on Design and Characterization of a Highly Selective LED Optical Sensor for Copper Ions in Aqueous
Sheng-Chun Hung1, Chih-Cheng Lu1,2, Yu-Ting Wu2
1Department of Intelligent Automation Engineering, National Taipei University of Technology, Taipei 10608, Taiwan.
Sensors (Basel, Switzerland)
|February 10, 2021
Summary
We developed a low-cost photoelectric sensor for detecting copper (Cu) ions using optical absorption. This fast-response sensor shows excellent specificity and sensitivity for accurate Cu ion quantification in aqueous solutions.
Area of Science:
- Analytical Chemistry
- Materials Science
- Sensor Technology
Background:
- Optical properties of solutions change with metal ion concentration due to electron transitions.
- Accurate detection of copper (Cu) ions is crucial in environmental and industrial monitoring.
- Existing methods for Cu ion detection can be costly, slow, or lack specificity.


