Dimensionally Stable Anode Based Sensor for Urea Determination via Linear Sweep Voltammetry

Urea is an added value chemical with wide applications in the industry and agriculture. The release of urea waste to environment affects ecosystem health despite its low toxicity. Online monitoring for industrial environmental unaddressed challenge. Electroanalytical techniques can be a smart integrated solution online if sensors overcome major barrier associated long-term stability. Mixed metal oxides have shown excellent stability conditions long lasting operational lives. However, these materials been barely explored sensing applications. This work presents proof concept that demonstrates applicability indirect electroanalytical quantification method urea. use Ti/RuO2-TiO2-SnO2 dimensional stable anode (DSA®) provide accurate sensitive aqueous samples exploiting catalytic properties DSA® on electrogeneration active chlorine species. cathodic reduction accumulated HClO/ClO− from anodic presented direct relationship concentration. novel allow competitive LOD 1.83 × 10−6 mol L−1 within linear range 6.66 3.33 10−4