Manganese Detection with a Metal Catalyst Free Carbon Nanotube Electrode: Anodic versus Cathodic Stripping Voltammetry

Electroanalysis - Tập 24 Số 10 - Trang 1909-1914 - 2012
Wei Yue1, Adam Bange2, Bill L. Riehl3, Bonnie D. Riehl3, Jay M. Johnson3, Ian Papautsky4, William R. Heineman1
1Department of Chemistry, University of Cincinnati, Cincinnati, OH, 45221–0172, USA,
2Department of Chemistry, Xavier University, Cincinnati, OH, 45207, USA.
3SCNTE LTD P.O. Box 38, Alpha, OH 45301, USA
4BiomicroSystems Labs, School of Electronic and Computing Systems, University of Cincinnati, Cincinnati, OH, 45221-0030, USA

Tóm tắt

Abstract

Anodic stripping voltammetry (ASV) and cathodic stripping voltammetry (CSV) were used to determine Mn concentration using metal catalyst free carbon nanotube (MCFCNT) electrodes and square wave stripping voltammetry (SWSV). The MCFCNTs are synthesized using a Carbo Thermal Carbide Conversion method which results in a material that does not contain residual transition metals. Detection limits of 120 nM and 93 nM were achieved for ASV and CSV, respectively, with a deposition time of 60 s. CSV was found to be better than ASV in Mn detection in many aspects, such as limit of detection and sensitivity. The CSV method was used in pond water matrix addition measurements.

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Thông tin xuất bản

Electroanalysis

Tập 24 Số 10

1909-1914

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