Anodic Stripping Voltammetry of Heavy Metals on a Metal Catalyst Free Carbon Nanotube Electrode |
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| Authors: | Wei Yue Bill L Riehl Nebojsa Pantelic Kevin T Schlueter Jay M Johnson Robert A Wilson Xuefei Guo Edward E King William R Heineman |
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| Institution: | 1. Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221‐0172, USA tel: +1‐513‐556‐9210;2. fax: 1‐515‐556‐9239;3. SCNTE LTD P.?O. Box 341530, Beavercreek, OH 45432, USA;4. YSI Incorporated, 1700 Brannum Ln, Yellow Springs, OH 45387, USA |
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| Abstract: | Anodic stripping voltammetry (ASV) determination of Pb2+, Cd2+, and Zn2+ was done using metal catalyst free carbon nanotube (MCFCN) electrodes. Osteryoung square wave stripping voltammetry (OSWSV) was selected for detection. The MCFCNTs are synthesized via Carbo Thermal Carbide Conversion method which leads to residual transition metal free in the CNT structure. The new material shows very good results in detecting heavy metal ions, such as Pb2+, Cd2+, and Zn2+. The calculated limits of detection were 13 nM, 32 nM and 50 nM for Pb2+, Cd2+ and Zn2+, respectively with a deposition time of 150 s. |
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| Keywords: | Heavy metal detection Osteryoung square‐wave anodic stripping voltammetry Metal catalyst free carbon nanotube |
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