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Sensors 2003, 3(3), 43-60; doi:10.3390/s30300043
Article

Voltammetric Determination of Carcinogenic Nitrobiphenyls at a Hanging Mercury Drop Electrode

1, 1,* , 2 and 1
1 UNESCO Laboratory of Environmental Electrochemistry, Department of Analytical Chemistry, Charles University, 128 43 Prague 2, Czech Republic 2 Center for Ecology, Toxicology and Analysis, Research Institute for Organic Syntheses, 532 18 Pardubice-Rybitví, Czech Republic
* Author to whom correspondence should be addressed.
Received: 7 February 2003 / Accepted: 14 February 2003 / Published: 20 February 2003
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Abstract

Differential pulse voltammetry (DPV) and adsorptive stripping voltammetry (AdSV) at a hanging mercury drop electrode (HMDE) was used for the determination of trace amounts of carcinogenic nitrobiphenyls, namely 2-nitrobiphenyl (2-NBP), 3-nitrobiphenyl (3-NBP) and 4-nitrobiphenyl (4-NBP) within the concentration range from 2.10-8 to 1.10-5 mol⋅L-1 for DPV and from 2.10-9 to 1.10-7 mol⋅L-1 for AdSV using a Britton-Robinson buffer – methanol (1:1) mixture with resulting pH 12 as a base electrolyte. The practical applicability of newly developed methods was verified using model samples of drinking and river water and liquid-liquid extraction for a preliminary separation and preconcentration.
Keywords: Hanging mercury drop electrode; Differential pulse voltammetry; Adsorptive stripping voltammetry; 2-nitrobiphenyl; 3-nitrobiphenyl; 4-nitrobiphenyl Hanging mercury drop electrode; Differential pulse voltammetry; Adsorptive stripping voltammetry; 2-nitrobiphenyl; 3-nitrobiphenyl; 4-nitrobiphenyl
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Štěpán, R.; Barek, J.; Mejstřík, V.; Zima, J. Voltammetric Determination of Carcinogenic Nitrobiphenyls at a Hanging Mercury Drop Electrode. Sensors 2003, 3, 43-60.

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