Sulfite determination at in situ plated copper modified gold ultramicroelectrode arrays
The electroanalytical detection of sulfite has been explored at an in situ formed copper ultramicroelectrode array. The protocol is based upon the in situ deposition of copper at a gold ultramicroelectrode array of cubic geometry which consists of 256 ultramicroelectrodes which are 5 microns in radi...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2006
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| _version_ | 1797064693550940160 |
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| author | Ordeig, O Banks, C del Campo, F Munoz, F Davis, J Compton, R |
| author_facet | Ordeig, O Banks, C del Campo, F Munoz, F Davis, J Compton, R |
| author_sort | Ordeig, O |
| collection | OXFORD |
| description | The electroanalytical detection of sulfite has been explored at an in situ formed copper ultramicroelectrode array. The protocol is based upon the in situ deposition of copper at a gold ultramicroelectrode array of cubic geometry which consists of 256 ultramicroelectrodes which are 5 microns in radius and are separated from their nearest neighbor by 100 microns. The immobilized copper array is electrocatalytic for the electrochemical reduction of sulfur dioxide which is formed after protonation of sulfite at low pH values (< pH 2). A sensitivity and detection limit of 0.35 nA μM-1 and 6 μM respectively is shown to be possible in pH 2.5 using linear sweep voltammetry with a linear range observed from 20-500 μM. © 2006 Wiley-VCH Verlag GmbH and Co. KGaA. |
| first_indexed | 2024-03-06T21:17:59Z |
| format | Journal article |
| id | oxford-uuid:40749bc5-d187-4def-ac04-9510f4575022 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:17:59Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:40749bc5-d187-4def-ac04-9510f45750222022-03-26T14:37:54ZSulfite determination at in situ plated copper modified gold ultramicroelectrode arraysJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:40749bc5-d187-4def-ac04-9510f4575022EnglishSymplectic Elements at Oxford2006Ordeig, OBanks, Cdel Campo, FMunoz, FDavis, JCompton, RThe electroanalytical detection of sulfite has been explored at an in situ formed copper ultramicroelectrode array. The protocol is based upon the in situ deposition of copper at a gold ultramicroelectrode array of cubic geometry which consists of 256 ultramicroelectrodes which are 5 microns in radius and are separated from their nearest neighbor by 100 microns. The immobilized copper array is electrocatalytic for the electrochemical reduction of sulfur dioxide which is formed after protonation of sulfite at low pH values (< pH 2). A sensitivity and detection limit of 0.35 nA μM-1 and 6 μM respectively is shown to be possible in pH 2.5 using linear sweep voltammetry with a linear range observed from 20-500 μM. © 2006 Wiley-VCH Verlag GmbH and Co. KGaA. |
| spellingShingle | Ordeig, O Banks, C del Campo, F Munoz, F Davis, J Compton, R Sulfite determination at in situ plated copper modified gold ultramicroelectrode arrays |
| title | Sulfite determination at in situ plated copper modified gold ultramicroelectrode arrays |
| title_full | Sulfite determination at in situ plated copper modified gold ultramicroelectrode arrays |
| title_fullStr | Sulfite determination at in situ plated copper modified gold ultramicroelectrode arrays |
| title_full_unstemmed | Sulfite determination at in situ plated copper modified gold ultramicroelectrode arrays |
| title_short | Sulfite determination at in situ plated copper modified gold ultramicroelectrode arrays |
| title_sort | sulfite determination at in situ plated copper modified gold ultramicroelectrode arrays |
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