Abstract
In view of the development of miniaturized sensor arrays, a solid-contact ammonium ion selective electrode has been investigated. A conductive polypyrrole film was electrochemicallydeposited on a glassy carbon surface and used as an internal solid contact layer between the sensing membrane and solid electrode surface. A systematic evaluation of the importantparameters affecting the electromotive force (emf) response ispresented. The performances of this solid-contact sensor were verified using a batch-mode measurement setup and a wall-jet flow cell system. The designed sensor exhibited excellent selectivity for the primary ion and a linear response over the pNH4 + range 1–5 with a slope of 56.3 mV decade-1. The sensor has a fast response and is relativelyrobustness, and was also used to determine ammonium concentrations in natural waters, with promising results.
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References
Barisci, J. N., Wallace, G. G. and Clarke, A.: 1997, ‘Amperometric detection of electroinactive anions using conducting polymer electrodes subsequent to chromatographic separation’, Electroanalysis 9(6), 461.
Beck, F. and Oberst, M.: 1987, ‘Electrodeposition and cycling of polypyrrole’, Markromol. Chem. Macromol. Symp. 8, 97–125.
Buhrer, T., Gehrig, P. and Simon, W.: 1988, ‘Neutral-carrier-based ion-selective microelectrodes design and application. A review’, Anal. Sci. 4, December.
Jimenez, C. and Bartoli, J.: 1997, ‘Development of an ion-sensitive field effect transistor based on PVC membrane technology with improved long-term stability’, Electroanalysis 7(4), 316.
Deviteri, F. J. S. and Diamond, D.: 1994, ‘Ammonium detection using an ion-selective electrode array in flow-injection’, Electroanalysis 6(1), 9.
Erkang, W., Zhu, L., Ma, L. and Patel, H.: 1997, ‘Optical sensors for sodium, potassium and ammonium ions based on lipophilic fluorescein anionic dye and neutral carriers’, Anal. Chimica Acta 357(1–2), 85–90.
Erkang, W. and Anhua, L.: 1991, ‘Polyaniline chemically modified electrode for detection of anions in flow injection analysis and ion chromatography’, Anal. Chimica Acta 252, 53.
Freiser, H.: 1987, ‘Coated wire ion selective electrodes and their application to environmental problems’, Pure and Appl. Chem. 59(4), 539–544.
John, R. and Wallace, G. G.: 1993, ‘Doping-dedoping of polypyrrole: a study using currentmeasuring and resistance-measuring techniques’, J. Electroanal. Chem. 354, 145–160.
Gardner, W. and Bartlett, P. N.: 1995, ‘Application of conducting polymer technology in microsystems’, Sensors and Actuators A 51, 57–66.
Lemke, U. and Cammann, K.: 1989, ‘Coated filmelectrodes’, Fresenius Z Anal. Chem. 335, 852–854.
Lien, M., Smyrl, W. H. and Morita, M.: 1991, ‘Cation and anion insertion in separate processes in poly(pyrrole) composite films’, J. Electroanal. Chem. 309, 333–340.
Magalhaes, J. M. C. S., Cespedes, F., Alegret, S. and Machado, A. A. S. C.: 1997, ‘Study of the temperature behaviour of all-solid-state nonactin ammonium electrodes with PVC membrane applied to graphite-epoxy supports of varied composition’, Anal. Chimica Acta 355(2–3), 241–247.
Morf, W. E.: 1981, The Principles of Ion-Selective Electrode and Membrane Transport, Elsevier, Amsterdam.
Nigel, B.: 1994, Environmental Chemistry, Wuerz Publishing, Winnipeg, pp. 221.
Omowunmi, A. S. and Wallace, G. G.: 1994, ‘Detection of electroinactive ions using conducting polymer microelectrodes’, Electroanalysis 6, 860.
Alexander, P. W., Dimitrakopolos, T. and Brynn Hibbert, D.: 1997, ‘Photo-cured ammonium and hydrogen ion selective coated-wire electrodes used simultaneously in a portable battery-powered flow injection analyzer’, Electroanalysis 9(17), 1331–1336.
Schuytema, G. S. and Nebeker, V. A.: 1999, ‘Comparative toxicity of ammonium and nitrate compounds to pacific treefrog and African clawed frog tadpoles’, Environ. Toxicol. and Chem. 18(10), 2251–2257.
Sjöberg, P., Bobadca, J., Lewenstam, A. and Ivaska, A.: 1999, ‘All-solid-state chloride-selective electrode based on poly(3-octylthiophene) and tridodecylmethylammonium chloride’, Electroanalysis 11(10–11), 821–824.
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Quan, D.P., Quang, C.X., Duan, L.T. et al. A Conductive Polypyrrole Based Ammonium Ion Selective Electrode. Environ Monit Assess 70, 153–165 (2001). https://doi.org/10.1023/A:1010622422561
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DOI: https://doi.org/10.1023/A:1010622422561