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A Nanostructured Poly(2-Mercapto-4-Amino-5Cyano-6-Phenylpyrimidine) Film for Sensitive Determination of Methyl Parathion

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A polymeric film was in-situ deposited on glassy carbon electrode (GCE) surface via electrochemical oxidation of 2-mercapto-4-amino-5-cyano-6-phenylpyrimidine (MACP). Scanning electron microscopy measurements indicated that the resulting polymeric film consisted of uniform nanoparticles. Electrochemical impedance spectroscopy revealed that the as-prepared organic film exhibited lower electron transfer resistance than that of the unmodified GCE. Electrochemical behaviors of methyl parathion (MP) at the polymeric film electrode surface were examined thoroughly. It was found that the oxidation peak current of MP were significantly increased. The remarkable increasing on the oxidation peak current clearly suggested that the novel polymeric film displayed strong enhanced effects on the MP oxidation. As a result, a sensitive and rapid electrochemical method was developed for the MP determination. The linear range was from 5.0 × 10–8 mol L–1 to 9.0 × 10–6 mol L–1, and the detection limit was as low as 1.2 × 10–8 mol L–1. This developed method was used to determine MP in cabbage samples, and the recoveries were in the range from 97.4% to 102.0%.
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Keywords: ELECTROCHEMICAL DETECTION; METHYL PARATHION; POLY(2-MERCAPTO-4-AMINO-5-CYANO-6-PHENYLPYRIMIDINE); THIN FILM-MODIFIED ELECTRODE

Document Type: Short Communication

Publication date: April 1, 2014

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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