Development of portable electrochemical sensor for heavy metals and application of detection of heavy metals lead and cadmium in rice
[Objective]To develop an efficient electrochemical method for the rapid detection of cadmium and lead ions(Cd2+and Pb2+)in rice samples.[Methods]Designed a portable electrochemical sensor utilizing a disposable screen printed electrode and anodic stripping voltammetry with an isoplated bismuth electrode.This setup was further optimized through square wave voltammetry(SWV),cyclic voltammetry(CV),and chronocurrent methods(I-T).[Results]The proposed approach exhibited outstanding performance with a linear detection range of 20 to 80 μg/L for Cd2+and 10 to 80 μg/L for Pb2+.The LOD of the cadmium ion were 1.201 0 μg/L,the LOD of the lead ion were 0.963 9 μg/L.[Conclusion]Our newly established electrochemical sensor for heavy metal detection in rice offers high sensitivity,ease of operation,rapid analysis,and aligns with environmentally friendly practices.
ricesheavy metal residuescreen printed electrodeelectrochemical detection
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