Simultaneous Detection of Heavy Metals by Anodic Stripping Voltammetry Using Carbon Nanotube Thread |
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| Authors: | Daoli Zhao Xuefei Guo Tingting Wang Noe Alvarez Vesselin N. Shanov William R. Heineman |
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| Affiliation: | 1. Department of Chemistry, University of Cincinnati, OH, 45221‐0172, USA;2. Smart Materials Nanotechnology Laboratory, Department of Mechanical, Industrial and Nuclear Engineering, University of Cincinnati, Cincinnati, OH, 45221‐0072, USA |
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| Abstract: | Carbon nanotube (CNT) threads are a type of CNT arrays that consist of super long CNTs. CNT threads inherit the advantages of CNTs, while avoiding the potential toxicity caused by individual CNTs. Electrodes based on CNT threads were fabricated and used for simultaneous detection of trace levels of Cu2+, Pb2+ Cd2+ and Zn2+ by anodic stripping voltammetry (ASV). The detection limits are 0.27 nM, 1.5 nM, 1.9 nM and 1.4 nM for Cu2+, Pb2+, Cd2+ and Zn2+, respectively, in 0.1 M acetate buffer pH 4.5. The CNT thread electrode gives well‐defined, reproducible and sharp stripping signals for individual and simultaneous detection of heavy metals. |
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| Keywords: | Carbon nanotube (CNT) thread electrode Heavy metals detection Osteryoung square‐wave stripping voltammetry (OSWSV) |
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