K. C. Honeychurch
Voltammetric behavior and trace determination of cadmium at a calixarene modified screen-printed carbon electrode
Honeychurch, K. C.; Hart, J. P.; Cowell, D. C.; Arrigan, D. W.M.; Honeychurch, Kevin C.; Hawkins, Daniel M.; Hart, John P.; Cowell, David C.
Authors
J. P. Hart
D. C. Cowell
D. W.M. Arrigan
Dr Kevin Honeychurch Kevin.Honeychurch@uwe.ac.uk
Senior Lecturer in Forensic Science
Daniel M. Hawkins
John Hart John.Hart@uwe.ac.uk
Professor
David C. Cowell
Abstract
Screen-printed carbon electrodes (SPCEs) have been evaluated for the anodic stripping voltammetric determination of cadmium using open circuit accumulation facilitated by two different calixarenes: a novel thiolated calixarene, calixarene (I), (5,11,17,23, tetra-tert-butyl-25,26,27,28-tetrakis(2-mercaptoethoxy)- calix[4]arene), and a commercially available calixarene (II) (25,26,27,28-tetrahydroxyl-calix[4]arene). This approach has the advantage that the medium exchange technique can be applied to reduce the possibility of potential electroactive interferents. In the present method, following medium exchange to a clean electrolyte, differential pulse voltammetry was employed in the measurement. This combination resulted in a detection limit of 2.8 ngmL-1 and a linear calibration range up to 350 ngmL-1 Cd2+. There was no interference from Cr3+, Hg2+ and Zn2+, but a decrease in signal was obversed when Pb2+ and Cu2+ were present. The screen-printed sensor modified with calixarene (I) was successfully employed for the determination of Cd2+ in a spiked river water sample.
Citation
Arrigan, D. W., Cowell, D. C., Hart, J. P., Honeychurch, K. C., Honeychurch, K. C., Hawkins, D. M., …Cowell, D. C. (2002). Voltammetric behavior and trace determination of cadmium at a calixarene modified screen-printed carbon electrode. Electroanalysis, 14(3), 177-185. https://doi.org/10.1002/1521-4109%28200202%2914%3A3%3C177%3A%3AAID-ELAN177%3E3.0.CO%3B2-V
Journal Article Type | Article |
---|---|
Publication Date | Jan 1, 2002 |
Journal | Electroanalysis |
Print ISSN | 1040-0397 |
Publisher | Wiley |
Peer Reviewed | Peer Reviewed |
Volume | 14 |
Issue | 3 |
Pages | 177-185 |
DOI | https://doi.org/10.1002/1521-4109%28200202%2914%3A3%3C177%3A%3AAID-ELAN177%3E3.0.CO%3B2-V |
Keywords | screen-printed carbon electrode, calixarene, differential pulse anodic stripping voltammetry, cadmium, chemically modified electrodes |
Public URL | https://uwe-repository.worktribe.com/output/1091210 |
Publisher URL | http://dx.doi.org/10.1002/1521-4109(200202)14:33.0.CO;2-V |
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