An ultrasonically facilitated boron-doped diamond voltammetric sensor for analysis of the priority pollutant 4-chlorophenol
Electroanalysis of the 'priority pollutant', 4-chlorophenol, is largely unreported in the scientific literature, due mainly to the electrode passivation observed from oxidative by-products. Work is presented which details the combination of high-intensity ultrasound with a mechanically and...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2001
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| _version_ | 1797087652315398144 |
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| author | Saterlay, A Foord, J Compton, R |
| author_facet | Saterlay, A Foord, J Compton, R |
| author_sort | Saterlay, A |
| collection | OXFORD |
| description | Electroanalysis of the 'priority pollutant', 4-chlorophenol, is largely unreported in the scientific literature, due mainly to the electrode passivation observed from oxidative by-products. Work is presented which details the combination of high-intensity ultrasound with a mechanically and chemically robust boron-doped diamond electrode allowing successful development of an aqueous 4-chlorophenol voltammetric sensor. The surface regeneration abilities of power ultrasound, through cavitational erosion of electrodeposited 4-chlorophenol by-products, facilitates a reproducible, insonated limiting-current oxidative signal in dilute acid conditions, with increased mass-transport offering enhanced sensitivity. A lower limit of detection of 1 μM and a linear range of 1-300 μM are reported; the technique being analytically useful over a concentration range where aquatic 4-chlorophenol pollution is known to occur. The use of power ultrasound during the electrooxidation of 4-chlorophenol at boron-doped diamond has also been shown to be advantageous in the electrochemical degradation of the substance, potentially offering further waste-water clean-up applications of this dual technology. |
| first_indexed | 2024-03-07T02:38:43Z |
| format | Journal article |
| id | oxford-uuid:a9b16017-afab-4435-a0f6-a5137a5953ac |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:38:43Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:a9b16017-afab-4435-a0f6-a5137a5953ac2022-03-27T03:10:07ZAn ultrasonically facilitated boron-doped diamond voltammetric sensor for analysis of the priority pollutant 4-chlorophenolJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a9b16017-afab-4435-a0f6-a5137a5953acEnglishSymplectic Elements at Oxford2001Saterlay, AFoord, JCompton, RElectroanalysis of the 'priority pollutant', 4-chlorophenol, is largely unreported in the scientific literature, due mainly to the electrode passivation observed from oxidative by-products. Work is presented which details the combination of high-intensity ultrasound with a mechanically and chemically robust boron-doped diamond electrode allowing successful development of an aqueous 4-chlorophenol voltammetric sensor. The surface regeneration abilities of power ultrasound, through cavitational erosion of electrodeposited 4-chlorophenol by-products, facilitates a reproducible, insonated limiting-current oxidative signal in dilute acid conditions, with increased mass-transport offering enhanced sensitivity. A lower limit of detection of 1 μM and a linear range of 1-300 μM are reported; the technique being analytically useful over a concentration range where aquatic 4-chlorophenol pollution is known to occur. The use of power ultrasound during the electrooxidation of 4-chlorophenol at boron-doped diamond has also been shown to be advantageous in the electrochemical degradation of the substance, potentially offering further waste-water clean-up applications of this dual technology. |
| spellingShingle | Saterlay, A Foord, J Compton, R An ultrasonically facilitated boron-doped diamond voltammetric sensor for analysis of the priority pollutant 4-chlorophenol |
| title | An ultrasonically facilitated boron-doped diamond voltammetric sensor for analysis of the priority pollutant 4-chlorophenol |
| title_full | An ultrasonically facilitated boron-doped diamond voltammetric sensor for analysis of the priority pollutant 4-chlorophenol |
| title_fullStr | An ultrasonically facilitated boron-doped diamond voltammetric sensor for analysis of the priority pollutant 4-chlorophenol |
| title_full_unstemmed | An ultrasonically facilitated boron-doped diamond voltammetric sensor for analysis of the priority pollutant 4-chlorophenol |
| title_short | An ultrasonically facilitated boron-doped diamond voltammetric sensor for analysis of the priority pollutant 4-chlorophenol |
| title_sort | ultrasonically facilitated boron doped diamond voltammetric sensor for analysis of the priority pollutant 4 chlorophenol |
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