Abstract:
Based on anodic stripping voltammetric (ASV) method, this paper demonstrated a portable sensor system for copper ions (Cu2+) detection in water samples. The proposed sens...Show MoreMetadata
Abstract:
Based on anodic stripping voltammetric (ASV) method, this paper demonstrated a portable sensor system for copper ions (Cu2+) detection in water samples. The proposed sensor system is composed of a customized electrochemical probe, a detecting circuit module and an application (APP) running on an Android device. The electrochemical probe is based on an environment-friendly three-electrode system that is configured with a gold disk working-electrode (WE), a platinum disk counter-electrode (CE) and a commercial Ag/AgCl reference electrode (RE). The detecting circuit module utilizes ARM Context-M4 platform to carry out constant potential control, weak current detection and Bluetooth wireless transmission. The Android application is used to manage the wireless communication between the hardware module and the Android device, and implement data management and graphic display of the testing results. The developed sensor system was verified with both standard copper salt reagents and real water samples. The testing result shows that it performes high sensitivity (0.0075 μA/μgL-1) to Cu2+ within the concentrations ranging from 0 μg/L to 400 μg/L by the square wave voltammetry (SWV). The recovery tests exhibit a good precision of the sensor system for copper determination. It can also be used to detect other heavy metal ions such as lead at the same time.
Published in: 2019 IEEE 14th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS)
Date of Conference: 11-14 April 2019
Date Added to IEEE Xplore: 28 November 2019
ISBN Information: