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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 which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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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