Voltammetric Determination of Carcinogenic Nitrobiphenyls at a Hanging Mercury Drop Electrode

doi:10.3390/s30300043

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

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Voltammetric Determination of Carcinogenic Nitrobiphenyls at a Hanging Mercury Drop Electrode

Radek Štěpán ¹, Jiří Barek ¹^,* , Viktor Mejstřík ² and Jiří Zima 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

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MDPI and ACS Style

Štěpán, R.; Barek, J.; Mejstřík, V.; Zima, J. Voltammetric Determination of Carcinogenic Nitrobiphenyls at a Hanging Mercury Drop Electrode. Sensors 2003, 3, 43-60.

AMA Style

Štěpán R., Barek J., Mejstřík V., Zima J. Voltammetric Determination of Carcinogenic Nitrobiphenyls at a Hanging Mercury Drop Electrode. Sensors. 2003; 3(3):43-60.

Chicago/Turabian Style

Štěpán, Radek; Barek, Jiří; Mejstřík, Viktor; Zima, Jiří. 2003. "Voltammetric Determination of Carcinogenic Nitrobiphenyls at a Hanging Mercury Drop Electrode." Sensors 3, no. 3: 43-60.

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