study of voltammetric determination of carcinogenic 1-nitropyrene and 1-aminopyrene using a glassy carbon paste electrode研究伏安测定致癌1-nitropyrene和1-aminopyrene使用玻璃碳糊电极.pdf

Sensors 2004, 4, 47-57 sensors ISSN 1424-8220 © 2004 by MDPI /sensors Study of Voltammetric Determination of Carcinogenic 1-Nitropyrene and 1-Aminopyrene Using a Glassy Carbon Paste Electrode 1 * 2 3 1 Jirí Barek , Alexandr Muck , Joseph Wang and Jirí Zima 1 UNESCO Laboratory of Environmental Electrochemistry, Department of Analytical Chemistry, Charles University, 128 43 Prague 2, Czech Republic 2 Max-Planck Institute for Chemical Ecology, Hans-Knoell-Str.8, 07745 Jena, Germany 3 SensoChip Laboratory, Department of Chemistry and Biochemistry, New Mexico State University, MSC 3C, Las Cruces, NM 88003, USA * Author to whom correspondence should be addressed. E-mail: barek@natur.cuni.cz Received: 30 April 2004 / Accepted: 30 May 2004 / Published: 20 July 2004 Abstract: Linear scan voltammetry (LSV), differential pulse voltammetry (DPV) and voltammetry with adsorptive accumulation (AAV) at a glassy carbon paste electrode (GCPE) based on mixing glassy carbon spherical microparticles with an organic pasting liquid were used for the determination of trace amounts of carcinogenic 1-nitropyrene (1- NP) (the limit of determination around 2.10-5 mol L-1 for LSV and 2.10-6 mol L-1 for DPV) and 1-aminopyrene (1-AP) (the limit of determination around 3.10-6 mol L-1 for LSV, -6 -1 -7 -1 1.10 mol L for DPV and 1.10 mol