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dc.rights.licenserestrictedAccess-
dc.contributor.authorStanic, Zorka-
dc.contributor.authorDimic M.-
dc.contributor.authorSimić, Zoran-
dc.contributor.authorJakšić L.-
dc.contributor.authorgirousi, stella-
dc.date.accessioned2021-04-20T14:45:41Z-
dc.date.available2021-04-20T14:45:41Z-
dc.date.issued2011-
dc.identifier.issn0277-5387-
dc.identifier.urihttps://scidar.kg.ac.rs/handle/123456789/10058-
dc.description.abstractBased on the cyclic voltammetric method, in the present study we have employed carbon paste for arsenopyrite mineral characterization in non-aqueous solution. Arsenopyrite yields well-defined cyclic voltammetric responses with well-defined oxidation (in the potential region from -0.7 to 0.7 V, versus Ag/AgCl) and reduction (from -1.0 to 0.8 V) peaks using this electrode. In addition, arsenopyrite mineral was studied as a new indicator electrode for the potentiometric titrations of acids (benzoic, anthranilic and salicylic acids) and bases (N,N′-diphenylguanidine, tributylamine and collidine) in acetonitrile and propionitrile. Potassium hydroxide, tetrabutylammonium hydroxide (TBAH) and perchloric acid proved to be very suitable titrating agents for these titrations. The investigated electrode showed a linear dynamic response for p-toluenesulfonic acid concentrations in the range 0.1-0.001 M, with a Nernstian slope of 38.5 mV in acetonitrile and 44.6 mV in propionitrile. The electrode showed a relatively fast response time and can be used without any time limit or without considerable divergence in potentials. The response time of the electrode was less than 10 s in both solvents. The standard deviation of the determination of the investigated acids and bases was less than 0.6% from those obtained with a glass electrode. The advantages of the electrodes are long-term stability, fast response and reproducibility, while the sensors are easy to prepare and are of low cost. © 2010 Elsevier Ltd. All rights reserved.-
dc.rightsinfo:eu-repo/semantics/restrictedAccess-
dc.sourcePolyhedron-
dc.titleElectrochemical characterization and analytical application of arsenopyrite mineral in non-aqueous solutions by voltammetry and potentiometry-
dc.typearticle-
dc.identifier.doi10.1016/j.poly.2010.12.009-
dc.identifier.scopus2-s2.0-79952008319-
Налази се у колекцијама:Faculty of Science, Kragujevac

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