Voltammetric Determination of 4-Nitrophenol Using a Novel Type of Silver Amalgam Paste Electrode

0329272 - ÚFCH JH 2010 RIV DE eng J - Článek v odborném periodiku
Niaz, A. - Fischer, J. - Barek, J. - Josypčuk, Bohdan - Sirajuddin, C. - Bhanger, M. I.
Voltammetric Determination of 4-Nitrophenol Using a Novel Type of Silver Amalgam Paste Electrode.
Electroanalysis. Roč. 21, č. 16 (2009), s. 1786-1791. ISSN 1040-0397. E-ISSN 1521-4109
Grant CEP: GA MŠMT(CZ) LC06035; GA ČR GA203/07/1195
Výzkumný záměr: CEZ:AV0Z40400503
Klíčová slova: voltammetry * drinking water * silver amalgam paste electrode * 4-nitrophenol
Kód oboru RIV: CG - Elektrochemie
Impakt faktor: 2.630, rok: 2009

A differential pulse voltammetric (DPV) method was developed for the determination of 4-nitrophenol (4-NP) at a newly developed silver amalgam paste electrode (AgA-PE) in Britton-Robinson buffer pH 3.0. The electrode is based on a disposable plastic pipette tip filled with paste amalgam based on a mixture of mercury and fine silver powder (9:1, w/w). The experimental parameters, such as pH of Britton-Robinson buffer and activation and regeneration potential of the electrode surface were optimized. The reduction peak current dependences were linear for the concentration of 4-NP from 0.2 to 100 mu M. The method showed reproducible results with RSD (n = 45) of 1.7%. The limit of determination (LOD) was 0.3 mu M. The method was successfully applied for the direct determination of 4-NP in drinking water.
Trvalý link: http://hdl.handle.net/11104/0175356