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Zeolite-modified carbon paste electrode for selective monitoring of dopamine

Abstract : Zeolite-Y-modified carbon paste electrodes display a preferential incorporation of the neurotransmitters dopamine and epinephrine, while rejecting the anionic ascorbate species. The greatly enhanced selectivity accrued from the ion-exchange properties of the zeolite particles is demonstrated using cyclic voltammetric, batch amperometric and flow-injection voltammetric experiments. Experimental parameters affecting the uptake of dopamine, including the solution pH and ionic strength or zeolite loading, are explored. The attractive properties of zeolite-modified electrodes could be valuable for in-vivo brain electrochemistry.
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Submitted on : Sunday, December 2, 2018 - 9:34:04 PM
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Joseph Wang, Alain Walcarius. Zeolite-modified carbon paste electrode for selective monitoring of dopamine. Journal of Electroanalytical Chemistry, Elsevier 1996, 407 (1-2), pp.183-187. ⟨10.1016/0022-0728(95)04488-4⟩. ⟨hal-01942064⟩



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