Dr Kevin Honeychurch Kevin.Honeychurch@uwe.ac.uk
Senior Lecturer in Forensic Science
Dr Kevin Honeychurch Kevin.Honeychurch@uwe.ac.uk
Senior Lecturer in Forensic Science
John Hart John.Hart@uwe.ac.uk
Professor
David C. Cowell
Damien W.M. Arrigan
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 ' 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.
Journal Article Type | Article |
---|---|
Publication Date | Jan 1, 2002 |
Deposit Date | Aug 6, 2010 |
Journal | Electroanalysis |
Print ISSN | 1040-0397 |
Electronic ISSN | 1521-4109 |
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/1083023 |
Publisher URL | http://dx.doi.org/10.1002/1521-4109(200202)14:33.0.CO;2-V |
Contract Date | Nov 15, 2016 |
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