Publication: Development of myrio-based heavy metal detection device
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Date
2024-08-01
Authors
Nur Amira binti Inzarulfaisham
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Abstract
Cadmium ion (Cd) is a heavy metal ion that pose great threat to the environment as well as human health which are produced by industrial wastewater. Even standard analytical techniques, such as Atomic Absorption Spectrometry (AAS), that can provide high accuracy in detection of metal ions, are significantly portable and real time-oriented, hence the need to design and develop new highly sensitive and portable techniques. The special focus of this study is to design a Heavy Metal Potentiostat HMstat with Screen Printed Gold Electrodes (SPGEs) for Square Wave Anodic Stripping Voltammetry (SWASV). The HMstat is a hybrid system which comprises of a digital control signal component (CSC part) using NI myRIO and an analog potentiostat read-out circuit component (PRCC). Some of the key approaches involved are signal generation by constant, ramp, Square Wave Voltammetry (SWV), electrode position of metal ions, and the resultant stripping voltammetry analysis for the determination of the levels of Cadmium. Experimental evidences substantiate the signal control and electrochemical measurement of HMstat, which is further evident from the efficacy of the HMstat to produce accurate SWASV signals for the detection of low concentration of Cadmium level with high sensitivity and selectivity is also proved from the above experimental findings. By using portable detecting mechanisms, it intends to increase environmental monitoring and human safety. This improvement is a milestone in portable technology that can detect heavy metal ions immediately.