Abstract
Legitimate pesticide regulation and health concern around the world urge the demand for pesticide monitoring system. Conventional techniques are incapable for on-site and real time analysis. This work presents the development of an alternative method for pesticide detection using non-enzymatic electrochemical sensor. The design focuses on fabricating a low-cost, sensitive electrode capable of detecting the organophosphate pesticide. The screen-printed carbon electrodes were modified with copper oxide nanostructures and incorporated with near-field communication potentiostat for smartphone access. Cyclic voltammetry and chronoamperometry were used to quantify pesticide residues and presenting high sensitivity and low detection limit (< 10 ppb). Our smartphone sensor has demonstrated a promising platform for on-site pesticide meter for real vegetable sample.
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