Methyl parathion sensors based on gold nanoparticles and Nafion film modified glassy carbon electrodes

Gold Nanoparticles in Chemical and Biological Sensing

“…Various pesticides, e.g. atrazine, 562 methyl parathion, 563,564 paraoxon ethyl, 565 carbofuran, 564 phoxim; 564 and different drugs such as paracetamol, 504,566 atenolol, 567 prednisolone, 568 ethamsylate, 569 were also detected using AuNP-modified electrodes. Recently, Raj has detected isoniazid, a popular anti-tuberculosis drug, by chemisorbing 70–100 nm AuNPs on a sol-gel-derived 3D silicate network with a detection sensitivity of 0.1 nM.…”

Stearic acid modified glassy carbon electrode for electrochemical sensing of parathion and methyl parathion

“…The major problem encountered in the electrochemical techniques is the fouling of the electrode surface due to the coverage of bulky pesticide molecules on its surface, which affects the reproducibility of the sensor. This problem is avoided by applying suitable modifier on the electrode surface, which also offers multifunction simultaneously [5][6][7][8][9][10][11][12][13][14][15]. Hexadecane is the neutral organic compound, which was used as the modifier for the detection of parathion [16].…”

Electroless synthesis of multibranched gold nanostructures encapsulated by poly(o-phenylenediamine) in Nafion

“…Consequently, we need a simple and direct synthetic methodology to synthesize tunable and stable polymer-metal nanocomposites in suitable solid polymer matrix, which will enable the fabrication of devices. Previous reports show that the plain gold nanoparticles are prepared in Nafion film [9,28,29]. The preparation of gold nanoparticles encapsulated in conducting polymers are also reported [24,[30][31][32].…”