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A novel poly-glutamic acid (PGA) film modified carbon paste electrode (CPE) incorporating carbon nanotubes (CNTs) was first prepared for the determination of l-tryptophan (l-Trp). Scanning electron microscopy and Fourier transform infrared spectroscopy were applied for characterization of the surface morphology of the modified electrodes and cyclic voltammetry was used to investigate the electrochemical...
A reliable and simple sensor was fabricated by modifying a carbon paste electrode with nanosized gold particles and poly (glutamic acid) for determination of paracetamol (PAR). The modified electrode exhibited an effective catalytic response to the oxidation and reduction of PAR with good reproducibility and stability. The determination was carried out by differential pulse adsorptive stripping voltammetry...
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