Voltammetric Determination of Selected Nitro Compounds at a Polished Silver Solid Amalgam Composite Electrode

0358309 - ÚFCH JH 2012 RIV DE eng J - Článek v odborném periodiku
Vyskočil, V. - Navrátil, Tomáš - Daňhel, A. - Dědík, J. - Krejčová, Z. - Škvorová, L. - Tvrdíková, J. - Barek, J.
Voltammetric Determination of Selected Nitro Compounds at a Polished Silver Solid Amalgam Composite Electrode.
Electroanalysis. Roč. 23, č. 1 (2011), s. 129-139. ISSN 1040-0397. E-ISSN 1521-4109.
[International Conference on Electroanalysis (ESEAC 2010) /13./. Gijón, 20.06.2010-24.06.2010]
Grant CEP: GA AV ČR IAA400400806
Výzkumný záměr: CEZ:AV0Z40400503
Klíčová slova: voltammetry * silver solid amalgam composite electrode * drinking water
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 2.872, rok: 2011

Voltammetric behavior of selected biologically active organic nitro compounds, namely 2-nitrofluorene, picric acid (2,4,6-trinitrophenol) and metronidazole, has been investigated using direct current voltammetry (DCV) and differential pulse voltammetry (DPV) at a polished silver solid amalgam composite electrode (p-AgSA-CE). The optimum conditions have been found for their determination in a 1:1 mixture of methanol and aqueous Britton-Robinson buffer of pH 5.0 for 2-nitrofluorene and in the aqueous Britton-Robinson buffer solutions of pH 2.0 and 4.0 for picric acid and metronidazole, respectively, with the limits of quantification (L(Q)s) 4, 0.1 and 2 mu molL(-1) (DCV at p-AgSA-CE) and 3, 1 and 4 mu molL(-1) (DPV at p-AgSA-CE) for 2-nitrofluorene, picric acid and metronidazole, respectively. An attempt to increase the sensitivity using adsorptive stripping voltammetry was not successful for all three test substances.
Trvalý link: http://hdl.handle.net/11104/0196396