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Sulfamethoxazole (SMZ), an antibacterial sulfonamide drug, has been selectively determined using poly‐1,5‐diaminonaphthalene (p‐DAN) modified glassy carbon electrode (GCE). The modified sensor was characterized by field emission scanning electron microscopy (FE‐SEM), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). SMZ showed linear response in the concentration range of 0.5–150 µM by using square wave voltammetry (SWV) and the detection limit was found to be 0.05 nM with sensitivity of 0.085 µA µM−1. The proposed sensor has been successfully employed to determine SMZ in the pharmaceutical tablets and human urine samples.
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Chasta et al. (2015) studied this question.
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