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http://dx.doi.org/10.9713/kcer.2012.50.5.933

Analysis of Trace Copper Metal at The Electrode Consisting of Carbon Nanotube using Stripping Voltammetry  

Choi, Chang-Kun (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
Jung, Young-Sam (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
Kim, Nack-Joo (Department of Fine Chemistry, Seoul National University of Science and Technology)
Pak, Dae-Won (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
Chung, Kun-Yong (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology)
Kim, Lae-Hyun (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology)
Kwon, Yong-Chai (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
Publication Information
Korean Chemical Engineering Research / v.50, no.5, 2012 , pp. 933-937 More about this Journal
Abstract
In the present study, we evaluate the sensitivity and optimal stripping voltammetry (SV) conditions of copper (Cu), which is one of the main trace heavy metals inducing the environmental contamination, using carbon nanotube (CNT) electrode. In addition, the reaction mechanism of stripping reaction of Cu is investigated. The electrochemical analyses such as squarewave stripping voltammetry (SWSV) and linear scan voltammetry (LSV) are used for the evaluations. As a result of that, the best SWSV conditions like squarewave amplitude of 15 mV, frequency of 60 Hz, deposition potential of -1.0V vs. Ag/AgCl and deposition time of 200s are determined with the measured Cu sensitivity of $1.824{\mu}A/{\mu}M$. As a driving force affecting the stripping reaction of Cu, surface reaction is more dominant one than diffusion. These results are compared with other reference results and it is confirmed that our suggested CNT electrode gives rise to better Cu sensitivity result than other references.
Keywords
Carbon Nanotube; Stripping Voltammetry; Trace Copper; Limit of Detection; Sensitivity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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